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the impeller imparts usable work on the flow. The cross-flow fan, or transverse fan, is thus a two-stage partial admission machine. The popularity of the crossflow fan in HVAC comes from its compactness, shape, quiet operation, and ability to provide a high pressure coefficient. Effectively a rectangular fan in terms of inlet and outlet geometry, the diameter readily scales to fit the available space, and the length is adjustable to meet flow rate requirements for the particular application.
181:
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in the direction of the impeller rotation. The rear wall has a log-spiral profile while the vortex stabilizer is a horizontal thin wall with a rounded edge. The resultant pressure difference allows air to flow straight through the fan, even though the fan blades counter the flow of air on one side of the rotation. Cross-flow fans give airflow along the entire width of the fan; however, they are noisier than ordinary centrifugal fans. Cross-flow fans are often used in ductless
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watts, for low annual cost. Some have humidity sensors to control trickle operation. They have the advantage of ensuring ventilation and preventing build-up of humidity. Alternatively, a normal extractor fan may be fitted to operate intermittently at full power for the same purpose. In cold weather they may have noticeably cool the room they are in, or, if the door is open, the house.
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impeller as the room itself is often bigger. Axial fans with five-inch (125 mm) impellers are also used in larger bathrooms though are much less common. Domestic axial extractor fans are not suitable for duct runs over 3 m or 4 m, depending on the number of bends in the run, as the increased air pressure in longer pipework inhibits the performance of the fan.
360:
2036:
625:: A variable-pitch fan is used where precise control of static pressure within supply ducts is required. The blades are arranged to rotate upon a control-pitch hub. The fan wheel will spin at a constant speed. The blades follow the control pitch hub. As the hub moves toward the rotor, the blades increase their angle of attack and an increase in flow results.
1070:
447:
the U.S. Consumer
Product Safety Commission, reported incidents related to box fans include, fire (266 incidents), potential fire (29 incidents), electrocution (15), electric shock (4 incidents), and electrical hazard (2 incidents). Injuries related to AC units mostly relate to their falling from buildings.
913:
of a thick wing and draws the air of the wing's suction (top) surface. By doing this, the propulsive wing is nearly stall-free, even at extremely high angles of attack, producing very high lift. However, the fanwing and propulsive wing concepts remain experimental and have only been used for unmanned
879:
The flow within a cross-flow fan may be broken up into three distinct regions: a vortex region near the fan discharge, called an eccentric vortex, the through-flow region, and a paddling region directly opposite. Both the vortex and paddling regions are dissipative, and as a result, only a portion of
556:
Continuous running extractor fans run continuously at a very slow rate, running fast when necessary, for example when a bathroom light is switched on. At working speed they are just normal extractor fans. At continuous speed they extract typically 5 to 10 l/sec and use little electricity, 1 or 2
1032:
In ventilation systems a jet fan, also known as an impulse or induction fan, ejects a stream of air which entrains ambient air along with it, in order to circulate the ambient air. The system takes up less space than conventional ventilation ducting and can significantly increase the rates of inflow
978:
also utilize this effect to help retain warm or cool air within an otherwise exposed area that lacks a cover or door. Air curtains are commonly used on open-face dairy, freezer, and vegetable displays to help retain chilled air within the cabinet using a laminar airflow circulated across the display
431:
In parts of the world such as India, where the temperature reaches above 100 °F (38 °C), standing and electric box fans are essential in the business world for customer comfort and an efficient work environment. Fans have become solar powered, energy efficient and battery powered in places
917:
A cross-flow fan is a centrifugal fan in which the air flows straight through the fan instead of at a right angle. The rotor of a cross-flow fan is covered to create a pressure differential. A cross-flow fan has two walls outside the impeller and a thick vortex wall inside. The radial gap decreases
883:
Common household tower fans are also cross-flow fans. Much of the early work focused on developing the cross-flow fan for both high- and low-flow-rate conditions and resulted in numerous patents. Key contributions were made by
Coester, Ilberg and Sadeh, Porter and Markland, and Eck. One interesting
548:
gearbox, and oscillator shaft. The oscillator is a mechanism that motions the fan from side to side. The armature axle shaft comes out on both ends of the motor, one end of the shaft is attached to the blade and the other is attached to the oscillator gearbox. The motor case joins to the gearbox to
479:
but do not lower temperatures directly. Fans used to cool electrical equipment or in engines or other machines do cool the equipment directly by exhausting hot air into the cooler environment outside of the machine so that cooler air flows in. There are three main types of fans used for moving air,
446:
Typical room electrical fans consume 50 to 100 watts of power, while air-conditioning units use 500 to 4000 watts; fans use less electricity but do not cool the air, simply providing evaporative cooling of sweat. Commercial fans are louder than AC units and can be to disruptively loud. According to
387:
of Japan pioneered the invention of mass-produced electric fans for home use. In the 1920s, industrial advances allowed steel fans to be mass-produced in different shapes, bringing fan prices down and allowing more homeowners to afford them. In the 1930s, the first art deco fan (the "Silver Swan")
891:
Since the flow both enters and exits the impeller radially, the crossflow fan has been studied and prototyped for potential aircraft applications. Due to the two-dimensional nature of the flow, the fan can be integrated into a wing for use in both thrust production and boundary-layer control. A
963:
that produces a fan that has no exposed fan blades or other visibly moving parts (unless augmented by other features such as for oscillation and directional adjustment). A relatively small quantity of air from a high-pressure-bladed impeller fan, which is contained inside the base rather than
552:
Domestic extractor fan: Wall- or ceiling-mounted, the domestic extractor fan is employed to remove moisture and stale air from domestic dwellings. Bathroom extractor fans typically utilize a four-inch (100 mm) impeller, whilst kitchen extractor fans typically use a six-inch (150 mm)
560:
Electro-mechanical fans: Among collectors, are rated according to their condition, size, age, and number of blades. Four-blade designs are the most common. Five-blade or six-blade designs are rare. The materials from which the components are made, such as brass, are important factors in fan
400:
in the 1960s caused many companies to discontinue production of fans, but in the mid-1970s, with an increasing awareness of the cost of electricity and the amount of energy used to heat and cool homes, turn-of-the-century styled ceiling fans became popular again as both decorative and
291:, a British engineer, demonstrated the successful use of a fan system to draw out stagnant air from coal mines in 1727—ventilation was particularly important in coal mines to prevent asphyxiation—and soon afterwards he installed a similar apparatus in Parliament. The civil engineer
1285:
The detached solar panel is typically installed in the spot which gets most of the sunlight and then connected to the fan mounted as far as 25 feet (8 m) away. Other permanently-mounted and small portable fans include an integrated (non-detachable) solar panel.
1254:
instead of mains current. This is an attractive option because once the capital costs of the solar panel have been covered, the resulting electricity is free. If ventilation needs are greatest during sunny weather, a solar powered fan can be a suitable choice.
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phenomenon particular to the cross-flow fan is that, as the blades rotate, the local air incidence angle changes. The result is that in certain positions the blades act as compressors (pressure increase), while at other azimuthal locations the blades act as
710:
371:
invented a fan powered by electricity. It was commercially marketed by the
American firm Crocker & Curtis electric motor company. In 1885 a desktop direct drive electric fan was commercially available by Stout, Meadowcraft & Co. in New York.
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The perceived loudness of fan noise also depends on the frequency distribution of the noise. This in turn depends on the shape and distribution of moving parts, especially of the blades, and of stationary parts, struts in particular. Like with
564:
Ceiling fan is a fan suspended from the ceiling of a room. Most ceiling fans rotate at relatively low speeds and, being inaccessible to reach, do not have blade guards. Ceiling fans are used in both residential and industrial/commercial
156:
grains), removing dust (e.g. sucking as in a vacuum cleaner), drying (usually in combination with a heat source) and providing draft for a fire. Some fans may be indirectly used for cooling in the case of industrial heat exchangers.
61:
is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an
1937:
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Fans generate noise from the rapid flow of air around blades and obstacles causing vortexes, and from the motor. Fan noise is roughly proportional to the fifth power of fan speed; halving speed reduces noise by about 15
900:
design concept initially developed around 1997 and under development by a company of the same name. This design creates lift by deflecting the wake downward due to the rotational direction of the fan, causing a large
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of India became the world's largest manufacturer of electric ceiling fans mainly for sale in India, Asia, and the Middle East. By the 1950s, table and stand fans were manufactured in bright colors and eye-catching.
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that used bellows to circulate air. Wren's design was the catalyst for much later improvement and innovation. The first rotary fan used in Europe was for mine ventilation during the 16th century, as illustrated by
792:
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528:. Axial flow fans are applied in air conditioning and industrial process applications. Standard axial flow fans have diameters of 300–400 mm or 1,800–2,000 mm and work under pressures up to 800
1112:
or through a belt and pulleys. Another common configuration is a dual-shaft motor, where one end of the shaft drives a mechanism, while the other has a fan mounted on it to cool the motor itself. Window
952:
An open-face supermarket freezer with an air curtain. Cooling air circulates across the food through the dark slot seen at the rear of the freezer, and through another grille not visible along the front.
868:(HVAC), especially in ductless split air conditioners. The fan is usually long relative to its diameter, so the flow remains approximately two-dimensional away from the ends. The cross-flow fan uses an
806:
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incorporate fans. Appliances such as hair dryers and space heaters also use fans. They move air in air-conditioning systems and in automotive engines. Fans used for comfort inside a room create a
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contain the rotor and stator. The oscillator shaft combines the weighted base and the gearbox. A motor housing covers the oscillator mechanism. The blade guard joins to the motor case for safety.
1006:
Fans may be installed in various ways, according to the application. They are often used in a free installation, without any housing of any kind. There are also some specialised installations.
172:
into the surrounding air, due to the airflow from the fans. Thus, fans may become less effective at cooling the body if the surrounding air is near body temperature and contains high humidity.
78:. Usually, it is contained within some form of housing, or case. This may direct the airflow, or increase safety by preventing objects from contacting the fan blades. Most fans are powered by
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1934:
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Before powered fans were widely accessible, their use related to the social divide between social classes. In
Britain and China, they were initially only installed in the buildings of
813:
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to the shaft about which the blades rotate. This type of fan is used in a wide variety of applications, ranging from small cooling fans for electronics to the giant fans used in
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which produce high pressures at a comparatively low volume. A fan blade will often rotate when exposed to an air-fluid stream, and devices that take advantage of this, such as
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from the shaft to the opening in the scroll-shaped fan casing. A centrifugal fan produces more pressure for a given air volume, and is used where this is desirable such as in
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and various industrial purposes. They are typically noisier than comparable axial fans (although some types of centrifugal fans are quieter such as in air handling units).
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Where electrical power or rotating parts are not readily available, fans may be driven by other methods. High-pressure gases such as steam can be used to drive a small
504:
Performance
Testing Code 11 (PTC) provides standard procedures for conducting and reporting tests on fans, including those of the centrifugal, axial, and mixed flows.
3335:
199:(fan) was used in India about 500 BCE. It was a handheld fan made from bamboo strips or other plant fiber, that could be rotated or fanned to move air. During
339:, so that the pressure produced by the fans would force the incoming air upward and through vents in the ceiling. Improvements in the technology were made by
140:(e.g., an electric table or floor fan), vehicle engine cooling systems (e.g., in front of a radiator), machinery cooling systems (e.g., inside computers and
1081:, often attached directly to the motor's output, with no gears or belts. The motor is either hidden in the fan's center hub or extends behind it. For big
2828:
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1903:
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865:
652:, or ribs, are positioned. Centrifugal fans blow air at right angles to the intake of the fan and spin the air outwards to the outlet (by deflection and
222:(fl. 180 CE) invented a manually operated rotary fan with seven wheels that measured 3 m (10 ft) in diameter; in the 8th century, during the
3463:
1104:
In machines with a rotating part, the fan is often connected to it rather than being powered separately. This is commonly seen in motor vehicles with
1024:
or rotor is surrounded by an aerodynamic duct or shroud which enhances its performance to create aerodynamic thrust or lift to transport the vehicle.
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opening. The airflow is typically generated by a mechanical fan of any type described in this article hidden in the base of the display cabinet.
383:. During this intense period of innovation, fans powered by alcohol, oil, or kerosene were common around the turn of the 20th century. In 1909,
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909:, another experimental concept prototype initially developed in the 1990s and 2000s. In this design, the crossflow fan is placed near the
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Mechanical revolving blade fans are made in a wide range of designs. They are used on the floor, table, desk, or hung from the ceiling (
203:, the word came to be used by Anglo-Indians to mean a large swinging flat fan, fixed to the ceiling and pulled by a servant called the
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exposed, induces the slower flow of a larger airmass through a circular or oval-shaped opening via a low-pressure area created by an
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2138:
1765:
Himeur, Rania M.; Khelladi, Sofiane; Ait Chikh, Mohamed
Abdessamed; Vanaei, Hamid Reza; Belaidi, Idir; Bakir, Farid (January 2022).
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and a series of step-down gears or pulleys to increase the rotational speed to that which is required for efficient fan operation.
1858:
905:, similar to a spinning leading-edge cylinder. Another configuration utilizing a crossflow fan for thrust and flow control is the
2229:
1741:
408:, designed to reduce energy consumption by using long fan blades rotating at low speed to move a relatively large volume of air.
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Large electric motors may have a cooling fan either on the back or inside the case. (Shown with the black rear cover removed.)
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1607:, By David Greenfield, December 20, 2010, Blog on Design News, Information provided by Dianna Huff – retrieved May 18, 2011.
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due to excessive use of an electric fan; Korean electric fans usually turn off after a few hours to protect from fan death.
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Building heating and cooling systems commonly use squirrel-cage fans driven by separate electric motors connected by belts.
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1101:. AC-powered fans usually use mains voltage, while DC-powered fans typically use low voltage, typically 24V, 12V, or 5 V.
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1262:, 12 in × 12 in (30 cm × 30 cm) solar panel and is supplied with appropriate brackets,
532:. Special types of fans are used as low-pressure compressor stages in aircraft engines. Examples of axial fans are:
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period (794-1185) in Japan, fans adapted the role of symbolizing social class as well as a mechanical role. The
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wall. Unlike radial machines, the main flow moves transversely across the impeller, passing the blading twice.
1913:
1335:
1058:, an irregular shape and distribution can flatten the noise spectrum, making the noise sound less disturbing.
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and can move air at up to 800 cubic feet per minute (400 L/s). Because of the wide availability of 12 V
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ZBook mobile workstation laptop. The fan displaces air over the fin-stack which contain a pair of heatpipes.
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467:), and can be built into a window, wall, roof, etc. Electronic systems generating significant heat such as
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commonly use a dual-shaft fan to operate separate fans for the interior and exterior parts of the device.
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1085:, three-phase asynchronous motors are commonly used, may be placed near the fan, and drive it through a
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to rotate the fan wheels for air conditioning, while the rotary fan became even more common during the
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Cross-section of a cross-flow fan, from the 1893 patent. The rotation is clockwise. The stream guide
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times, was a dangerous weapon hidden in plain sight in the shape of a regular fan, a weapon used by
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789:"year when Key contributions were made by Coester, Ilberg and Sadeh, Porter and Markland, and Eck."
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Table fan: Basic elements of a typical table fan include the fan blade, base, armature, and lead
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1108:, large cooling systems, locomotives, and winnowing machines, where the fan is connected to the
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2005:"The influence of uneven blade spacing on the SPL and noise spectra radiated from radial fans"
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for pet rodents) or "scroll fan", the centrifugal fan has a moving component (called an
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in the mines in the North of
England, though the machinery was liable to breaking down.
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Large, slow-moving energy sources such as a flowing river can also power a fan using a
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930:, in automobile ventilation systems, and for cooling in medium-sized equipment such as
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439:. Many older South Korean citizens believe in the unscientific and unsupported myth of
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1767:"Towards an Accurate Aerodynamic Performance Analysis Methodology of Cross-Flow Fans"
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The inlet shape of the fan can also influence the noise levels generated by the fan.
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While fans are effective at cooling people, they do not cool air, but rather work by
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sometimes drive an engine cooling fan directly or may use a separate electric motor.
272:, established the basic principles of vacuum and airflow. The English architect Sir
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Often called a "squirrel cage" (because of its general similarity in appearance to
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and the convenience of wiring such a low voltage, such fans usually operate on 12
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1605:
Industrial Fan
Designer Finds Niche in Energy Efficiency – Automation and Control
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fans introduced to the consumer market in 2009 have popularized a 1981 design by
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with forward-curved blades, placed in a housing consisting of a rear wall and a
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HISTORIC BUILDING ENGINEERING SYSTEMS & EQUIPMENT HEATING & VENTILATION
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656:). The impeller rotates, causing air to enter the fan near the shaft and move
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1470:"Central Heating and Ventilation:Origins and Effects on Architectural Design"
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and prevents the engine from overheating by blowing or drawing air through a
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1808:"Experimental study of the three-dimensional flow field in cross-flow fans"
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1350: – Heat producing machine to increase temperature of an enclosed space
648:) that consists of a central shaft about which a set of blades that form a
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also utilize this effect to increase airflow evenly in rooms compared to
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331:, a Scottish doctor, installed four steam-powered fans in the ceiling of
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3773:
3686:
3511:
2623:
2295:
1887:
1783:
1766:
1121:
1043:
965:
960:
897:
885:
780: in this section. Unsourced material may be challenged and removed.
717:
577:
425:
250:
1270:. It can be used to ventilate up to 1,250 square feet (116 m) of
864:
fan, was patented in 1893 by Paul
Mortier, and is used extensively in
4357:
4336:
4113:
4063:
3731:
3300:
3052:
2858:
2608:
1992:"Reduction of Tonal Propeller Noise by Means of Uneven Blade Spacing"
1679:"Everything You Should Know About Cross Flow Fan - PBM Motor and Fan"
1086:
873:
649:
600:
585:
254:
242:
196:
153:
106:
1020:
In vehicles, a ducted fan is a method of propulsion in which a fan,
892:
configuration that utilizes a crossflow fan is located at the wing
3441:
3315:
2748:
1595:
Information
Provided by Steve Cunningham – retrieved July 5, 2010.
1332: – Machine to increase pressure of gas by reducing its volume
1068:
947:
741:
729:
511:
454:
358:
350:
179:
165:
149:
48:
40:
30:
This article is about mechanical fans. For hand-powered fans, see
4511:
3783:
2823:
2743:
1279:
1271:
1259:
1069:
537:
501:
300:
133:
3920:
3445:
2050:
2018:"UltraFlo Fluid Dynamic Bearing Fans for Thin Laptop Computers"
1954:
UK Health and Safety Executive: Top 10 noise control techniques
1883:"Dyson Air Multiplier Review: Making a $ 300 Fan Takes Cojones"
1742:"Tangential Fans: Introduction and Working Principle Discussed"
1314: – Device that removes contaminants from the air in a room
692:
A diagram of a centrifugal fan, with a top view to show airflow
3958:
1344: – Device that cools air through the evaporation of water
1326: – Fan that induces gas flow mostly parallel to the shaft
1305: – Device that cools air through the evaporation of water
1183:
1128:, either of which can provide the rotational drive for a fan.
749:
384:
1299: – Relationships between equipment performance and power
260:
In the 17th century, the experiments of scientists including
1580:"Emerson Silver Swan Fan | Missouri Historical Society"
1365: – Large centrifugal fans, used to ventilate coal mines
1371: – Fan used to circulate air throughout a living space
404:
In 1998 William Fairbank and Walter K. Boyd invented the
1307:
Pages displaying short descriptions of redirect targets
1453:. The Worshipful Company of Fan Makers. Archived from
619:
help to draw heat away from the electrical components.
1250:
Electric fans used for ventilation may be powered by
1422:
Needham (1986), Volume 4, Part 2, 99, 134, 151, 233.
1358:
Pages displaying wikidata descriptions as a fallback
82:, but other sources of power may be used, including
4529:
4489:
4444:
4401:
4350:
4317:
4299:
4246:
4200:
4162:
4082:
3967:
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3479:
3388:
3354:
3281:
3185:
3033:
2536:
2222:
2084:
1124:, and high-pressure liquids can be used to drive a
572:, a mechanical or electrically driven fan provides
520:Axial-flow fans have blades that force air to move
1857:
1851:
1849:
1379:Pages displaying short descriptions with no spaces
311:In 1849 a 6m radius steam-driven fan, designed by
738:is usually not present in modern implementations.
516:An axial box fan for cooling electrical equipment
1806:Casarsa, L.; Giannattasio, P. (September 2011).
1174:Dual shaft fan motor in a window air conditioner
343:, Frenchman Theophile Guibal and J. R. Waddle.
129:, often have designs similar to that of a fan.
3932:
3457:
2062:
1702:Porter, A. M.; Markland, E. (December 1970).
1568:. Munn & Company. 1885-07-18. p. 37.
1538:. New Orleans Bar Association. Archived from
596:or an electric motor switched on or off by a
8:
1944:, Syetemair, 2017. (retrieved 22 March 2022)
716:Centrifugal cooling fan installed within an
502:The American Society of Mechanical Engineers
1645:"Heat loss through Continuous Running Fans"
1593:Fancollectors.org – A Brief History of Fans
1218:. Unsourced material may be challenged and
276:applied an early ventilation system in the
4616:Heating, ventilation, and air conditioning
3939:
3925:
3917:
3464:
3450:
3442:
2829:High efficiency glandless circulating pump
2078:Heating, ventilation, and air conditioning
2069:
2055:
2047:
1859:"Dyson fan: was it invented 30 years ago?"
1077:Standalone fans are usually powered by an
866:heating, ventilation, and air conditioning
1782:
1708:Journal of Mechanical Engineering Science
1238:Learn how and when to remove this message
1033:of fresh air and expulsion of stale air.
840:Learn how and when to remove this message
609:for cooling electrical components and in
424:(3150 BC), servants were required to fan
315:, was made operational in the Gelly Gaer
97:Mechanically, a fan can be any revolving
4005:Crankcase ventilation system (PCV valve)
3263:Mold growth, assessment, and remediation
1904:"Video Review: The Dyson Air Multiplier"
1495:, By Brian Roberts, CIBSE Heritage Group
406:high-volume low-speed (HVLS) ceiling fan
1966:"The Thermodynamics Behind the Mac Pro"
1508:Fans and Ventilation: A practical guide
1391:
1320: – Fan used to cool an attic space
1137:
682:
435:In South Korea, fans play a part in an
388:was designed by Emerson. By the 1940s,
1812:Experimental Thermal and Fluid Science
1631:"Do extractor fans cost a lot to run?"
991:while reducing the energy used by the
3136:Programmable communicating thermostat
1258:A typical example uses a detached 10-
379:developed the world's first electric
7:
3258:Mechanical, electrical, and plumbing
2003:M. Boltezar; M. Mesaric; A. Kuhelj.
1832:10.1016/j.expthermflusci.2011.01.015
1629:MacEachern, Ruth (24 October 2022).
1533:"B. A. C. (Before Air Conditioning)"
1451:"A Short History of Mechanical Fans"
1216:adding citations to reliable sources
1089:. Smaller fans are often powered by
778:adding citations to reliable sources
105:. Fans produce air flows with high
3119:Minimum efficiency reporting value
1856:Wallop, Harry (October 20, 2009).
1054:, and similar to the principle of
25:
3161:Standard temperature and pressure
2874:Packaged terminal air conditioner
2410:Passive daytime radiative cooling
2139:Heat pump and refrigeration cycle
1881:Wilson, Mark (October 12, 2009).
1720:10.1243/JMES_JOUR_1970_012_071_02
323:. The model was exhibited at the
144:), ventilation, fume extraction,
2230:Absorption-compression heat pump
2034:
1902:Biggs, John (October 12, 2009).
1870:from the original on 2022-01-12.
1188:
1167:
1155:
1140:
754:
709:
697:
685:
432:with unreliable energy sources.
27:Machine used to produce air flow
4107:Overhead valve (pushrod) layout
3125:Normal temperature and pressure
2505:Vapor-compression refrigeration
1704:"A Study of the Cross Flow Fan"
1440:Needham, Volume 4, Part 2, 154.
765:needs additional citations for
584:. The fan may be driven with a
226:(618–907), the Chinese applied
101:, or vanes used for producing
1:
3273:Testing, adjusting, balancing
3217:Building information modeling
3212:Building services engineering
2789:Ground-coupled heat exchanger
2317:Demand controlled ventilation
2265:Building insulation materials
1431:Day & McNeil (1996), 210.
132:Typical applications include
2834:High-pressure cut-off switch
2385:Ice storage air conditioning
2306:Dedicated outdoor air system
1276:brushless DC electric motors
299:installed reciprocating air
3727:Instant hot water dispenser
3177:Thermostatic radiator valve
2979:Thermostatic radiator valve
2490:Underfloor air distribution
2425:Radiant heating and cooling
2343:Energy recovery ventilation
2255:Automobile air conditioning
2119:Domestic energy consumption
1338: – Air purifier design
1148:Internal combustion engines
1106:internal combustion engines
289:John Theophilus Desaguliers
92:internal combustion engines
4667:
3948:Internal combustion engine
3326:Institute of Refrigeration
3207:Architectural technologist
2679:Electrostatic precipitator
1013:
976:Air curtains and air doors
941:
860:fan, sometimes known as a
668:, air mattress inflators,
633:
29:
4565:
4416:Diesel particulate filter
4368:Idle air control actuator
4309:Engine control unit (ECU)
3954:
3379:Volatile organic compound
3238:Environmental engineering
3202:Architectural engineering
3004:Ultra-low particulate air
2589:Automatic balancing valve
2517:Variable refrigerant flow
2369:Heat recovery ventilation
2312:Deep water source cooling
477:heat transfer coefficient
245:, a Japanese fan used in
4481:Viscous fan (fan clutch)
4393:Throttle position sensor
4102:Overhead camshaft layout
3426:Template:Home automation
3248:Kitchen exhaust cleaning
2944:Solar-assisted heat pump
2544:Air conditioner inverter
2323:Displacement ventilation
2214:Vapour pressure of water
2199:Thermal destratification
1663:Fan or Blowing apparatus
355:Electric fan in Thailand
45:A household electric fan
4020:Core plug (freeze plug)
3747:Laundry-folding machine
3421:World Refrigeration Day
3268:Refrigerant reclamation
3197:Architectural acoustics
3141:Programmable thermostat
3073:Clean air delivery rate
2969:Thermal expansion valve
2884:Pressurisation ductwork
2794:Ground source heat pump
2235:Absorption refrigerator
1404:Encyclopædia Britannica
1065:Fan motor drive methods
704:Typical centrifugal fan
459:Ceiling fan with a lamp
428:and important figures.
420:and in noble homes. In
218:craftsman and engineer
53:A large cylindrical fan
4621:Mechanical engineering
3411:Glossary of HVAC terms
3373:Sick building syndrome
3253:Mechanical engineering
2964:Smoke exhaust ductwork
2395:Mixed-mode ventilation
1505:Cory, William (2010).
1074:
953:
747:
739:
617:audio power amplifiers
517:
460:
367:Between 1882 and 1886
364:
356:
327:of 1851. Also in 1851
192:
189:Fan Moved by Mechanism
142:audio power amplifiers
113:(although higher than
54:
46:
34:. For other uses, see
3615:Electric water boiler
3431:Template:Solar energy
3109:Intelligent buildings
3068:Carbon dioxide sensor
2455:Room air distribution
2275:Central solar heating
1091:shaded pole AC motors
1072:
951:
888:(pressure decrease).
745:
733:
670:inflatable structures
515:
458:
362:
354:
183:
52:
44:
4626:Chemical engineering
4261:Compression ignition
3233:Duct leakage testing
3223:Deep energy retrofit
3167:Thermographic camera
3104:Infrared thermometer
2579:Air source heat pump
2528:Water heat recycling
2094:Air changes per hour
2043:at Wikimedia Commons
1482:on January 21, 2016.
1457:on December 4, 2013.
1212:improve this section
957:Dyson Air Multiplier
774:improve this article
333:St George's Hospital
278:Houses of Parliament
36:Fan (disambiguation)
4411:Catalytic converter
3906:Appliance recycling
3630:Electric toothbrush
3099:HVAC control system
3089:Home energy monitor
3063:Building automation
2849:Inverter compressor
2511:Variable air volume
2420:Passive ventilation
2390:Kitchen ventilation
2290:Constant air volume
2260:Autonomous building
1864:The Daily Telegraph
1824:2011ETFS...35..948C
1667:US Pat. No. 507,445
1565:Scientific American
1377: – Ventilation
1336:Corsi–Rosenthal Box
1099:brushless DC motors
968:surface shape (the
926:, in some types of
412:Social implications
396:Window and central
381:ceiling mounted fan
191:, November 27, 1830
168:and increased heat
162:evaporative cooling
4606:Cooling technology
4537:Knocking / pinging
4129:Combustion chamber
3762:Robotic lawn mower
3645:Evaporative cooler
3362:Indoor air quality
3306:ASTM International
3243:Hydronic balancing
3020:Wood-burning stove
2899:Radiator reflector
2684:Evaporative cooler
2495:Underfloor heating
2480:Thermal insulation
1972:. 10 December 2019
1940:2022-02-24 at the
1784:10.3390/en15145134
1651:. 8 November 2019.
1617:ASME PTC 11 – Fans
1468:Robert Bruegmann.
1354:Specific fan power
1342:Evaporative cooler
1075:
1056:acoustic diffusors
954:
748:
740:
678:air handling units
623:Variable pitch fan
518:
475:by increasing the
461:
401:energy-efficient.
365:
357:
329:David Boswell Reid
193:
148:(e.g., separating
55:
47:
4583:
4582:
4552:Stratified charge
4319:Electrical system
4301:Engine management
4134:Compression ratio
4074:Starter ring gear
3973:rotating assembly
3914:
3913:
3534:Coffee percolator
3517:Immersion blender
3439:
3438:
3355:Health and safety
2934:Scroll compressor
2889:Process duct work
2644:Convection heater
2639:Condensing boiler
2569:Air-mixing plenum
2465:Solar combisystem
2301:Cross ventilation
2104:Building envelope
2041:Fans (mechanical)
2039:Media related to
1970:Popular Mechanics
1916:on March 15, 2011
1518:978-0-08-053158-8
1248:
1247:
1240:
993:air handling unit
850:
849:
842:
824:
654:centrifugal force
544:, motor housing,
262:Otto von Guericke
257:were not ideal.
117:), as opposed to
16:(Redirected from
4658:
4596:Ventilation fans
4426:Exhaust manifold
4291:Spark plug wires
4177:Boost controller
4164:Forced induction
3941:
3934:
3927:
3918:
3722:Induction cooker
3692:Garbage disposer
3640:Espresso machine
3595:Electric blanket
3466:
3459:
3452:
3443:
3401:Building science
3156:Smart thermostat
3151:Room temperature
2734:Fireplace insert
2440:Radon mitigation
2338:Electric heating
2333:District heating
2328:District cooling
2245:Air conditioning
2071:
2064:
2057:
2048:
2038:
2022:
2021:
2014:
2008:
2001:
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1988:
1982:
1981:
1979:
1977:
1962:
1956:
1951:
1945:
1932:
1926:
1925:
1923:
1921:
1912:. Archived from
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1893:
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1878:
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1481:
1475:. Archived from
1474:
1465:
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1429:
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1414:
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1324:Axial fan design
1308:
1243:
1236:
1232:
1229:
1223:
1192:
1184:
1171:
1159:
1144:
1115:air conditioners
1087:belt and pulleys
920:air conditioners
845:
838:
834:
831:
825:
823:
782:
758:
750:
713:
701:
689:
398:air conditioning
390:Crompton Greaves
369:Schuyler Wheeler
325:Great Exhibition
274:Christopher Wren
212:air conditioning
210:For purposes of
115:ambient pressure
84:hydraulic motors
21:
4666:
4665:
4661:
4660:
4659:
4657:
4656:
4655:
4631:Gas compressors
4586:
4585:
4584:
4579:
4561:
4557:Top dead centre
4525:
4485:
4440:
4397:
4346:
4320:
4313:
4302:
4295:
4242:
4196:
4158:
4114:Tappet / lifter
4097:Flathead layout
4087:
4078:
3972:
3963:
3950:
3945:
3915:
3910:
3889:
3885:Washing machine
3880:Water dispenser
3806:Pressure cooker
3789:Convection oven
3717:Ice cream maker
3625:Electric shaver
3620:Electric heater
3605:Electric kettle
3487:Air conditioner
3475:
3473:Home appliances
3470:
3440:
3435:
3396:ASHRAE Handbook
3384:
3368:Passive smoking
3350:
3283:
3277:
3189:
3187:
3181:
3035:
3029:
3010:Whole-house fan
2924:Run-around coil
2919:Reversing valve
2864:Mechanical room
2854:Kerosene heater
2844:Infrared heater
2774:Gasoline heater
2714:Fan filter unit
2629:Condensate pump
2614:Centrifugal fan
2532:
2435:Radiant heating
2430:Radiant cooling
2405:Passive cooling
2400:Microgeneration
2270:Central heating
2218:
2194:Thermal comfort
2086:
2080:
2075:
2031:
2026:
2025:
2016:
2015:
2011:
2002:
1998:
1989:
1985:
1975:
1973:
1964:
1963:
1959:
1952:
1948:
1942:Wayback Machine
1935:Jet Fan Systems
1933:
1929:
1919:
1917:
1901:
1900:
1896:
1880:
1879:
1875:
1855:
1854:
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1696:
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1677:
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1672:
1660:
1656:
1649:BuildHub.org.uk
1643:
1642:
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1628:
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1623:
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1426:
1421:
1417:
1408:
1406:
1398:
1397:
1393:
1388:
1383:
1378:
1369:Whole-house fan
1357:
1306:
1292:
1244:
1233:
1227:
1224:
1209:
1193:
1182:
1175:
1172:
1163:
1160:
1151:
1145:
1083:industrial fans
1067:
1039:
1030:
1018:
1012:
1004:
946:
940:
907:propulsive wing
846:
835:
829:
826:
783:
781:
771:
759:
728:
721:
714:
705:
702:
693:
690:
674:climate control
658:perpendicularly
642:exercise wheels
638:
636:Centrifugal fan
632:
586:belt and pulley
540:, motor, blade
510:
453:
414:
349:
313:William Brunton
309:
228:hydraulic power
178:
138:thermal comfort
134:climate control
103:currents of air
80:electric motors
39:
28:
23:
22:
18:Mechanical fans
15:
12:
11:
5:
4664:
4662:
4654:
4653:
4648:
4646:Fluid dynamics
4643:
4641:Thermodynamics
4638:
4633:
4628:
4623:
4618:
4613:
4608:
4603:
4601:Turbomachinery
4598:
4588:
4587:
4581:
4580:
4578:
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4566:
4563:
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4560:
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4533:
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4527:
4526:
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4523:
4509:
4504:
4499:
4493:
4491:
4487:
4486:
4484:
4483:
4478:
4473:
4468:
4462:
4461:
4456:
4450:
4448:
4446:Cooling system
4442:
4441:
4439:
4438:
4433:
4428:
4423:
4418:
4413:
4407:
4405:
4403:Exhaust system
4399:
4398:
4396:
4395:
4390:
4385:
4380:
4375:
4373:Inlet manifold
4370:
4365:
4360:
4354:
4352:
4348:
4347:
4345:
4344:
4339:
4334:
4329:
4323:
4321:
4318:
4315:
4314:
4312:
4311:
4305:
4303:
4300:
4297:
4296:
4294:
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4288:
4283:
4278:
4273:
4268:
4263:
4258:
4252:
4250:
4244:
4243:
4241:
4240:
4235:
4230:
4228:Fuel injection
4225:
4220:
4215:
4210:
4204:
4202:
4198:
4197:
4195:
4194:
4189:
4184:
4179:
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4166:
4160:
4159:
4157:
4156:
4151:
4146:
4141:
4136:
4131:
4126:
4121:
4116:
4110:
4109:
4104:
4099:
4093:
4091:
4080:
4079:
4077:
4076:
4071:
4066:
4061:
4056:
4051:
4046:
4041:
4036:
4022:
4017:
4012:
4007:
4002:
3997:
3995:Connecting rod
3992:
3987:
3982:
3976:
3974:
3965:
3964:
3955:
3952:
3951:
3946:
3944:
3943:
3936:
3929:
3921:
3912:
3911:
3909:
3908:
3903:
3901:Appliance plug
3897:
3895:
3891:
3890:
3888:
3887:
3882:
3877:
3872:
3871:
3870:
3865:
3860:
3853:Vacuum cleaner
3850:
3845:
3843:Television set
3840:
3835:
3833:Sewing machine
3830:
3825:
3824:
3823:
3818:
3816:Crisper drawer
3808:
3803:
3798:
3797:
3796:
3794:Microwave oven
3791:
3781:
3776:
3771:
3766:
3765:
3764:
3759:
3749:
3744:
3739:
3734:
3729:
3724:
3719:
3714:
3709:
3704:
3699:
3694:
3689:
3684:
3683:
3682:
3677:
3672:
3667:
3662:
3652:
3650:Food processor
3647:
3642:
3637:
3632:
3627:
3622:
3617:
3612:
3610:Electric knife
3607:
3602:
3600:Electric drill
3597:
3592:
3587:
3586:
3585:
3578:Domestic robot
3575:
3574:
3573:
3571:drying cabinet
3563:
3558:
3553:
3548:
3547:
3546:
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3531:
3526:
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3507:Barbecue grill
3504:
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3469:
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3158:
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3148:
3146:Psychrometrics
3143:
3138:
3133:
3128:
3122:
3116:
3111:
3106:
3101:
3096:
3091:
3086:
3081:
3076:
3070:
3065:
3060:
3055:
3050:
3045:
3043:Air flow meter
3039:
3037:
3031:
3030:
3028:
3027:
3022:
3017:
3012:
3007:
3001:
2996:
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2871:
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2846:
2841:
2836:
2831:
2826:
2821:
2819:Heating system
2816:
2811:
2806:
2801:
2799:Heat exchanger
2796:
2791:
2786:
2781:
2776:
2771:
2766:
2764:Gas compressor
2761:
2756:
2751:
2746:
2741:
2736:
2731:
2726:
2721:
2716:
2711:
2706:
2701:
2699:Expansion tank
2696:
2691:
2686:
2681:
2676:
2671:
2666:
2661:
2656:
2651:
2646:
2641:
2636:
2631:
2626:
2621:
2619:Ceramic heater
2616:
2611:
2606:
2601:
2596:
2591:
2586:
2581:
2576:
2571:
2566:
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2556:
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2514:
2508:
2502:
2497:
2492:
2487:
2482:
2477:
2472:
2467:
2462:
2460:Solar air heat
2457:
2452:
2450:Renewable heat
2447:
2442:
2437:
2432:
2427:
2422:
2417:
2412:
2407:
2402:
2397:
2392:
2387:
2382:
2377:
2372:
2366:
2361:
2359:Forced-air gas
2356:
2351:
2346:
2340:
2335:
2330:
2325:
2320:
2314:
2309:
2303:
2298:
2293:
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2247:
2242:
2237:
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2224:
2220:
2219:
2217:
2216:
2211:
2209:Thermodynamics
2206:
2201:
2196:
2191:
2186:
2181:
2179:Psychrometrics
2176:
2171:
2166:
2161:
2156:
2151:
2146:
2141:
2136:
2134:Gas compressor
2131:
2129:Fluid dynamics
2126:
2121:
2116:
2111:
2106:
2101:
2096:
2090:
2088:
2082:
2081:
2076:
2074:
2073:
2066:
2059:
2051:
2045:
2044:
2030:
2029:External links
2027:
2024:
2023:
2009:
1996:
1983:
1957:
1946:
1927:
1894:
1873:
1845:
1818:(6): 948–959.
1798:
1757:
1733:
1714:(6): 421–431.
1694:
1670:
1661:Paul Mortier.
1654:
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1079:electric motor
1066:
1063:
1038:
1035:
1029:
1026:
1014:Main article:
1011:
1008:
1003:
1000:
942:Main article:
939:
938:Bladeless fans
936:
928:laptop coolers
848:
847:
762:
760:
753:
746:Cross-flow fan
727:
724:
723:
722:
715:
708:
706:
703:
696:
694:
691:
684:
634:Main article:
631:
628:
627:
626:
620:
613:
611:laptop coolers
604:
574:engine cooling
566:
562:
558:
554:
550:
526:cooling towers
509:
506:
452:
449:
437:old wives tale
413:
410:
348:
345:
308:
305:
283:Georg Agricola
185:Patent drawing
177:
174:
26:
24:
14:
13:
10:
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6:
4:
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4459:Water cooling
4457:
4455:
4452:
4451:
4449:
4447:
4443:
4437:
4436:Oxygen sensor
4434:
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4429:
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4376:
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4371:
4369:
4366:
4364:
4361:
4359:
4356:
4355:
4353:
4351:Intake system
4349:
4343:
4342:Starter motor
4340:
4338:
4335:
4333:
4330:
4328:
4325:
4324:
4322:
4316:
4310:
4307:
4306:
4304:
4298:
4292:
4289:
4287:
4284:
4282:
4281:Ignition coil
4279:
4277:
4274:
4272:
4269:
4267:
4264:
4262:
4259:
4257:
4254:
4253:
4251:
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4239:
4236:
4234:
4231:
4229:
4226:
4224:
4221:
4219:
4216:
4214:
4213:Petrol engine
4211:
4209:
4208:Diesel engine
4206:
4205:
4203:
4199:
4193:
4190:
4188:
4185:
4183:
4180:
4178:
4175:
4173:
4172:Blowoff valve
4170:
4169:
4167:
4165:
4161:
4155:
4152:
4150:
4147:
4145:
4142:
4140:
4137:
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4112:
4111:
4108:
4105:
4103:
4100:
4098:
4095:
4094:
4092:
4090:
4089:Cylinder head
4085:
4081:
4075:
4072:
4070:
4067:
4065:
4062:
4060:
4057:
4055:
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4008:
4006:
4003:
4001:
3998:
3996:
3993:
3991:
3988:
3986:
3983:
3981:
3980:Balance shaft
3978:
3977:
3975:
3970:
3966:
3962:
3960:
3953:
3949:
3942:
3937:
3935:
3930:
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3743:
3742:Kitchen stove
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3539:Clothes dryer
3537:
3535:
3532:
3530:
3527:
3525:
3524:Bread machine
3522:
3518:
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3284:organizations
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3274:
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3259:
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3254:
3251:
3249:
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3239:
3236:
3234:
3231:
3229:
3228:Duct cleaning
3226:
3224:
3221:
3218:
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3213:
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3208:
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3200:
3198:
3195:
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3107:
3105:
3102:
3100:
3097:
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3092:
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3087:
3085:
3082:
3080:
3079:Control valve
3077:
3074:
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3069:
3066:
3064:
3061:
3059:
3056:
3054:
3051:
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3026:
3023:
3021:
3018:
3016:
3013:
3011:
3008:
3005:
3002:
3000:
2999:Turning vanes
2997:
2995:
2992:
2990:
2987:
2985:
2982:
2980:
2977:
2975:
2974:Thermal wheel
2972:
2970:
2967:
2965:
2962:
2960:
2957:
2955:
2952:
2950:
2947:
2945:
2942:
2940:
2939:Solar chimney
2937:
2935:
2932:
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2927:
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2800:
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2762:
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2737:
2735:
2732:
2730:
2727:
2725:
2722:
2720:
2717:
2715:
2712:
2710:
2709:Fan coil unit
2707:
2705:
2702:
2700:
2697:
2695:
2692:
2690:
2687:
2685:
2682:
2680:
2677:
2675:
2672:
2670:
2667:
2665:
2662:
2660:
2657:
2655:
2654:Cooling tower
2652:
2650:
2647:
2645:
2642:
2640:
2637:
2635:
2632:
2630:
2627:
2625:
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2529:
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2506:
2503:
2501:
2500:Vapor barrier
2498:
2496:
2493:
2491:
2488:
2486:
2483:
2481:
2478:
2476:
2475:Solar heating
2473:
2471:
2470:Solar cooling
2468:
2466:
2463:
2461:
2458:
2456:
2453:
2451:
2448:
2446:
2445:Refrigeration
2443:
2441:
2438:
2436:
2433:
2431:
2428:
2426:
2423:
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2418:
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2415:Passive house
2413:
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2285:Chilled water
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2207:
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2197:
2195:
2192:
2190:
2187:
2185:
2184:Sensible heat
2182:
2180:
2177:
2175:
2172:
2170:
2167:
2165:
2164:Noise control
2162:
2160:
2157:
2155:
2152:
2150:
2147:
2145:
2144:Heat transfer
2142:
2140:
2137:
2135:
2132:
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1633:. EnviroVent.
1632:
1625:
1622:
1618:
1613:
1610:
1606:
1601:
1598:
1594:
1589:
1586:
1581:
1575:
1572:
1567:
1566:
1559:
1556:
1545:on 2012-09-03
1541:
1534:
1528:
1525:
1520:
1514:
1510:
1509:
1501:
1498:
1494:
1489:
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1471:
1464:
1461:
1456:
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1401:
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1361:
1355:
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1340:
1337:
1334:
1331:
1328:
1325:
1322:
1319:
1316:
1313:
1310:
1304:
1301:
1298:
1297:Affinity laws
1295:
1294:
1289:
1287:
1283:
1281:
1277:
1273:
1269:
1265:
1261:
1256:
1253:
1242:
1239:
1231:
1221:
1217:
1213:
1207:
1206:
1202:
1197:This section
1195:
1191:
1186:
1185:
1179:
1170:
1165:
1158:
1153:
1149:
1143:
1138:
1136:
1134:
1129:
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1123:
1118:
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1111:
1107:
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1100:
1096:
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1088:
1084:
1080:
1071:
1064:
1062:
1059:
1057:
1053:
1047:
1045:
1036:
1034:
1027:
1025:
1023:
1017:
1009:
1007:
1001:
999:
997:
994:
990:
986:
982:
977:
973:
971:
970:Coandă effect
967:
962:
958:
950:
945:
944:Bladeless fan
937:
935:
933:
929:
925:
921:
915:
912:
911:trailing edge
908:
904:
899:
895:
889:
887:
881:
877:
875:
871:
867:
863:
859:
855:
844:
841:
833:
830:November 2023
822:
819:
815:
812:
808:
805:
801:
798:
794:
791: –
790:
786:
785:Find sources:
779:
775:
769:
768:
763:This section
761:
757:
752:
751:
744:
737:
732:
725:
719:
712:
707:
700:
695:
688:
683:
681:
679:
675:
671:
667:
663:
659:
655:
651:
647:
643:
637:
629:
624:
621:
618:
614:
612:
608:
605:
602:
599:
595:
591:
587:
583:
579:
575:
571:
567:
563:
561:desirability.
559:
555:
551:
547:
543:
539:
535:
534:
533:
531:
527:
523:
514:
507:
505:
503:
499:
496:(also called
495:
491:
488:(also called
487:
483:
478:
474:
470:
466:
457:
450:
448:
444:
442:
438:
433:
429:
427:
423:
422:Ancient Egypt
419:
411:
409:
407:
402:
399:
394:
391:
386:
382:
378:
373:
370:
361:
353:
346:
344:
342:
341:James Nasmyth
338:
334:
330:
326:
322:
318:
314:
306:
304:
302:
298:
294:
290:
286:
285:(1494–1555).
284:
279:
275:
271:
267:
263:
258:
256:
252:
248:
244:
240:
235:
233:
229:
225:
221:
217:
213:
208:
206:
202:
198:
190:
186:
182:
175:
173:
171:
167:
163:
158:
155:
151:
147:
143:
139:
136:and personal
135:
130:
128:
127:wind turbines
124:
120:
116:
112:
108:
104:
100:
95:
93:
89:
85:
81:
77:
73:
72:
67:
66:
60:
51:
43:
37:
33:
19:
4651:Aerodynamics
4466:Electric fan
4465:
4266:Coil-on-plug
4192:Turbocharger
4187:Supercharger
4059:Main bearing
4049:Firing order
4039:Displacement
3985:Block heater
3969:Engine block
3957:Part of the
3956:
3811:Refrigerator
3757:Riding mower
3737:Kitchen hood
3654:
3561:Dehumidifier
3551:Clothes iron
3502:Air purifier
3406:Fireproofing
3190:and services
3186:Professions,
3084:Gas detector
2984:Trickle vent
2959:Smoke damper
2954:Smoke canopy
2949:Space heater
2879:Plenum space
2814:Heating film
2703:
2694:Exhaust hood
2664:Dehumidifier
2604:Blast damper
2599:Barrier pipe
2574:Air purifier
2485:Thermosiphon
2364:Free cooling
2280:Chilled beam
2204:Thermal mass
2189:Stack effect
2174:Particulates
2154:Infiltration
2085:Fundamental
2012:
1999:
1986:
1974:. Retrieved
1969:
1960:
1949:
1930:
1918:. Retrieved
1914:the original
1907:
1897:
1886:
1876:
1863:
1815:
1811:
1801:
1777:(14): 5134.
1774:
1770:
1760:
1749:. Retrieved
1746:Sofasco Fans
1745:
1736:
1711:
1707:
1697:
1686:. Retrieved
1682:
1673:
1662:
1657:
1648:
1639:
1624:
1612:
1600:
1588:
1574:
1564:
1558:
1547:. Retrieved
1540:the original
1527:
1511:. Elsevier.
1507:
1500:
1488:
1477:the original
1463:
1455:the original
1445:
1436:
1427:
1418:
1407:. Retrieved
1403:
1394:
1312:Air purifier
1284:
1257:
1252:solar panels
1249:
1234:
1225:
1210:Please help
1198:
1130:
1126:pelton wheel
1119:
1103:
1076:
1060:
1048:
1040:
1031:
1019:
1005:
1002:Installation
983:linear slot
974:
955:
932:photocopiers
916:
914:prototypes.
903:Magnus force
894:leading edge
890:
882:
878:
861:
857:
853:
851:
836:
827:
817:
810:
803:
796:
784:
772:Please help
767:verification
764:
735:
662:leaf blowers
639:
615:Fans inside
607:Computer fan
598:thermostatic
519:
497:
493:
489:
485:
481:
462:
445:
434:
430:
415:
403:
395:
377:Philip Diehl
374:
366:
363:Two box fans
310:
295:, and later
293:John Smeaton
287:
270:Robert Boyle
266:Robert Hooke
259:
236:
234:(960–1279).
232:Song dynasty
224:Tang dynasty
209:
201:British rule
194:
188:
159:
131:
96:
75:
69:
63:
58:
56:
4611:Ventilation
4490:Lubrication
4454:Air cooling
4271:Distributor
4223:Fuel filter
4201:Fuel system
4182:Intercooler
4149:Timing belt
4139:Head gasket
4069:Piston ring
3875:Waffle iron
3838:Slow cooker
3828:Rice cooker
3769:Leaf blower
3556:Coffeemaker
3497:Air ioniser
3416:Warm Spaces
3058:Blower door
3036:and control
3034:Measurement
3015:Windcatcher
2989:Trombe wall
2929:Sail switch
2909:Refrigerant
2904:Recuperator
2779:Grease duct
2739:Freeze stat
2724:Fire damper
2594:Back boiler
2564:Air ionizer
2559:Air handler
2523:Ventilation
2375:Hybrid heat
2240:Air barrier
2159:Latent heat
1976:17 December
1228:August 2024
1180:Solar power
1133:water wheel
1110:drive shaft
1052:tire treads
630:Centrifugal
570:automobiles
486:centrifugal
465:ceiling fan
321:South Wales
297:John Buddle
237:During the
216:Han dynasty
205:punkawallah
123:anemometers
119:compressors
4590:Categories
4542:Power band
4502:Oil filter
4476:Thermostat
4421:EGT sensor
4383:MAF sensor
4378:MAP sensor
4363:Air filter
4327:Alternator
4286:Spark plug
4218:Carburetor
4144:Rocker arm
4084:Valvetrain
4015:Crankshaft
3959:Automobile
3752:Lawn mower
3707:Humidifier
3697:Hair dryer
3675:Fan heater
3590:Deep fryer
3583:comparison
3566:Dishwasher
3529:Bug zapper
3172:Thermostat
3094:Humidistat
3025:Zone valve
2994:TurboSwing
2869:Oil heater
2839:Humidifier
2769:Gas heater
2719:Fan heater
2689:Evaporator
2674:Economizer
2649:Compressor
2554:Air filter
2537:Components
2354:Forced-air
2250:Antifreeze
2223:Technology
2169:Outgassing
2109:Convection
1909:TechCrunch
1866:. London.
1751:2023-11-29
1688:2023-11-29
1549:2010-07-19
1409:2012-05-19
1386:References
1375:Window fan
1363:Waddle fan
1348:Fan heater
1330:Compressor
1303:Air cooler
1268:connectors
1016:Ducted fan
1010:Ducted fan
858:tangential
854:cross-flow
800:newspapers
726:Cross-flow
666:blowdryers
594:crankshaft
546:oscillator
508:Axial-flow
498:tangential
494:cross flow
473:wind chill
418:Parliament
347:Electrical
170:convection
88:handcranks
4276:Glow plug
4238:Fuel tank
4233:Fuel pump
4000:Crankcase
3702:Hair iron
3665:bladeless
3492:Air fryer
3282:Industry
3131:OpenTherm
2809:Heat pump
2804:Heat pipe
2754:Fume hood
2729:Fireplace
2634:Condenser
2584:Attic fan
2380:Hydronics
1990:Tae Kim.
1840:0894-1777
1793:1996-1073
1728:0022-2542
1318:Attic fan
1199:does not
1022:propeller
989:registers
985:diffusers
924:air doors
565:settings.
469:computers
441:fan death
375:In 1882,
337:Liverpool
220:Ding Huan
146:winnowing
4636:Turbines
4575:Category
4520:Dry sump
4516:Wet sump
4507:Oil pump
4471:Radiator
4388:Throttle
4248:Ignition
4119:Camshaft
4044:Flywheel
4025:Cylinder
4010:Crankpin
3894:See also
3801:Pie iron
3712:Icemaker
3635:Epilator
3389:See also
3114:LonWorks
3048:Aquastat
2914:Register
2894:Radiator
2549:Air door
2349:Firestop
2149:Humidity
2124:Enthalpy
2114:Dilution
2099:Bake-out
2087:concepts
1938:Archived
1868:Archived
1771:Energies
1290:See also
886:turbines
870:impeller
718:HP inc.
646:impeller
588:off the
582:radiator
580:-filled
522:parallel
426:Pharaohs
317:Colliery
251:samurais
111:pressure
109:and low
65:impeller
32:Hand fan
4547:Redline
4431:Muffler
4332:Battery
4256:Magneto
3868:robotic
3858:central
3848:Toaster
3774:Lighter
3687:Freezer
3670:ceiling
3512:Blender
3188:trades,
2759:Furnace
2624:Chiller
2296:Coolant
1920:May 22,
1888:Gizmodo
1820:Bibcode
1220:removed
1205:sources
1122:turbine
1095:brushed
1028:Jet fan
966:airfoil
961:Toshiba
898:FanWing
896:is the
862:tubular
814:scholar
578:coolant
255:katanas
176:History
4570:Portal
4358:Airbox
4337:Dynamo
4064:Piston
4054:Stroke
4033:layout
3961:series
3863:manual
3732:Juicer
3680:window
3341:SMACNA
3301:ASHRAE
3121:(MERV)
3075:(CADR)
3053:BACnet
3006:(ULPA)
2859:Louver
2784:Grille
2659:Damper
2609:Boiler
2507:(VCRS)
2308:(DOAS)
1994:. p. 4
1838:
1791:
1726:
1515:
1266:, and
1264:cables
996:blower
874:vortex
816:
809:
802:
795:
787:
650:spiral
601:switch
590:engine
492:) and
490:radial
247:Feudal
243:tessen
214:, the
197:punkah
187:for a
154:cereal
107:volume
90:, and
76:runner
4530:Other
4154:Valve
4124:Chest
3821:smart
3779:Mixer
3660:attic
3544:combo
3480:Types
3381:(VOC)
3375:(SBS)
3364:(IAQ)
3321:CIBSE
3316:BSRIA
3219:(BIM)
3163:(STP)
3127:(NTP)
2749:Freon
2519:(VRF)
2513:(VAV)
2371:(HRV)
2345:(ERV)
2319:(DCV)
2292:(CAV)
1543:(PDF)
1536:(PDF)
1480:(PDF)
1473:(PDF)
1400:"Fan"
1280:volts
1093:, or
1037:Noise
821:JSTOR
807:books
542:guard
538:wires
482:axial
451:Types
307:Steam
301:pumps
253:when
239:Heian
166:sweat
152:from
150:chaff
74:, or
71:rotor
4512:Sump
4029:bank
3990:Bore
3784:Oven
3336:LEED
3296:AMCA
3291:AHRI
2824:HEPA
2744:Flue
2669:Duct
1978:2019
1922:2011
1836:ISSN
1789:ISSN
1724:ISSN
1513:ISBN
1272:area
1260:watt
1203:any
1201:cite
981:HVAC
852:The
793:news
268:and
195:The
125:and
99:vane
4497:Oil
4086:and
3971:and
3655:Fan
3346:UMC
3331:IIR
3311:BRE
2704:Fan
1828:doi
1779:doi
1716:doi
1683:PBM
1214:by
1097:or
972:).
856:or
776:by
676:in
592:'s
568:In
500:).
385:KDK
335:in
319:of
164:of
59:fan
4592::
4518:,
4031:,
1968:.
1906:.
1885:.
1862:.
1848:^
1834:.
1826:.
1816:35
1814:.
1810:.
1787:.
1775:15
1773:.
1769:.
1744:.
1722:.
1712:12
1710:.
1706:.
1681:.
1665:.
1647:.
1402:.
1282:.
1046:.
1044:dB
998:.
934:.
922:,
672:,
664:,
530:Pa
484:,
264:,
207:.
94:.
86:,
68:,
57:A
4522:)
4514:(
4035:)
4027:(
3940:e
3933:t
3926:v
3465:e
3458:t
3451:v
2070:e
2063:t
2056:v
2020:.
2007:.
1980:.
1924:.
1891:.
1842:.
1830::
1822::
1795:.
1781::
1754:.
1730:.
1718::
1691:.
1619:.
1582:.
1552:.
1521:.
1412:.
1241:)
1235:(
1230:)
1226:(
1222:.
1208:.
843:)
837:(
832:)
828:(
818:·
811:·
804:·
797:·
770:.
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38:.
20:)
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