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Wikipedia About Air Conditioners

for: Air conditioning

An air conditioner is an appliance, system, or mechanism designed to extract heat from an area via a refrigeration cycle. In construction, a complete system of heating, ventilation, and air conditioning is referred to as "HVAC." Its purpose, in a building or an automobile, is to provide comfort during either hot or cold weather.

History

Main: Air conditioning#History

Air conditioning applications

Main: Air conditioning#Air conditioning applications

Refrigeration cycle

In the refrigeration cycle, a heat pump transfers heat from a lower-temperature heat source into a higher-temperature heat sink. Heat would naturally flow in the opposite direction. This is the most common type of air conditioning. A refrigerator works in much the same way, as it pumps the heat out of the interior into the room in which it stands.

This cycle takes advantage of the way phase changes work, where latent heat is released at a constant temperature during a liquid/gas phase change, and where varying the pressure of a pure substance also varies its condensation/boiling point.

The most common refrigeration cycle uses an electric motor to drive a compressor. In an automobile, the compressor is driven by a belt over a pulley, the belt being driven by the engine's crankshaft (similar to the driving of the pulleys for the alternator, power steering, etc.). Whether in a car or building, both use electric fan motors for air circulation. Since evaporation occurs when heat is absorbed, and condensation occurs when heat is released, air conditioners use a compressor to cause pressure changes between two compartments, and actively condense and pump a refrigerant around. A refrigerant is pumped into the cooled compartment (the evaporator coil), where the low pressure causes the refrigerant to evaporate into a vapor, taking heat with it. In the other compartment (the condenser), the refrigerant vapor is compressed and forced through another heat exchange coil, condensing into a liquid, rejecting the heat previously absorbed from the cooled space.

Humidity

Air conditioning equipment usually reduces the humidity of the air processed by the system. The relatively cold (below the dew point) evaporator coil condenses water vapor from the processed air, much like a cold drink will condense water on the outside of a glass. The water is drained, removing water vapor from the cooled space and thereby lowering its relative humidity. Since humans perspire to provide natural cooling by the evaporation of perspiration from the skin, drier air (up to a point) improves the comfort provided. The comfort air conditioner is designed to create a 40% to 60% relative humidity in the occupied space. In food retail establishments, large, open chiller cabinets act as highly effective dehumidifiers.

Search results for Air Conditioners

Brilliant Air Conditioners

Online shop offering portable and window air conditioners and coolers as well as air cleaners, dehumidifiers, fans, and heaters.www.brilliantcooler.com/

Air Conditioners: Reviews, comparisons and prices

Reviews and research on Air Conditioners. ConsumerSearch.com identifies top ... air conditioners, has an entire lab designed to simulate an air conditioner ...www.consumersearch.com/www/house_and_home/air-conditioner-re...

Air conditioner - Wikipedia, the free encyclopedia

An air conditioner is an appliance, system, or mechanism designed to extract ... Japanese-made domestic air conditioners are usually window or split types, the ...en.wikipedia.org/wiki/Air_conditioner

Portable Air Conditioners and Mini-Split AC's

Sells portable brand name air conditioners, dehumidifiers, fans, and heaters. Includes an online shopping consultant to make selection easy.www.air-conditioners-america.com/

Air conditioner - Wikipedia, the free encyclopedia

Air conditioner. From Wikipedia, the free encyclopedia (Redirected from Air conditioners) ... Japanese-made domestic air conditioners are usually window or ...en.wikipedia.org/wiki/Air_conditioners

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News about Air Conditioners

Fourth annual energy-efficient tax-free holiday starts today

Macon TelegraphAnyone looking to buy appliances, air conditioners and ceiling fans could save by not paying sales tax - legally - during Georgia's fourth annual Energy Star Sales Tax Holiday.http://www.macon.com/198/story/480162.html

Neighbours, council fear turbine could provide more than energy

Ottawa CitizenCouncillors on a committee that handles minor bylaw exceptions struggled for two hours Wednesday to figure out what a backyard wind turbine has in common with tall flag poles and noisy air conditioners. http://www.canada.com/ottawacitizen/story.html?id=daf596fc-d...

Birkirkara man denies stealing air conditioners

Times of MaltaA 25-year-old from Birkirkara, Marlon Camilleri, was remanded in custody today after he pleaded not guilty to stealing over €58,000 worth of air conditioners from a warehouse in Mriehel.http://www.timesofmalta.com/articles/view/20080926/local/bir...

Schmidt targets air pollution in seeking anti-idling law for city

Park Ridge Herald-Advocate Should Park Ridge drivers be ticketed for leaving their engines running while parked? http://www.pioneerlocal.com/parkridge/news/1195926,pr-idling...

Whirlpool targets small towns in east

Express IndiaWhirlpool Corp is focussing on the small towns of the eastern region to increase sell of all its product categories including washing machines, air conditioners and microwaves. The region contributes about 14% of the company's total turnover in India.http://www.financialexpress.com/news/Whirlpool-targets-small...

News about Air Conditioners

Ukraine Plan To Tax Satellite Dishes, Air Conditioners, And Fireworks ...

Radio Free EuropeThe coffers of the Ukrainian capital Kyiv are apparently empty, the passage of the city budget keeps being postponed, but the city fathers have come up with a plan. Headed by Kyiv's colorful mayor Leonid Chernovetsky, the politicians have proposed ... http://www.rferl.org/content/Ukraine_Plan_To_Tax_Satellite_D...

United Tech to cut 11,600 jobs

Boston GlobeThe world's largest maker of elevators and air conditioners said on Tuesday it expects to earn $4 to $4.50 per share in 2009, lower than the $4.65 to $5.15 per share it previously forecast. Analysts were looking for profit of $4.60 per share ... http://www.boston.com/business/articles/2009/03/10/united_te...

Ex-Hugo Chávez ally accused of corruption in Venezuela

Miami HeraldCARACAS -- A former governor who broke ties with Venezuelan President Hugo Chávez has been charged with corruption. Prosecutors investigating Eduardo Manuitt say they discovered irregularities in the purchase of air conditioners for hospitals in ... http://www.miamiherald.com/news/americas/venezuela/story/940...

Greg Lucas: State Air Board Chief Quits

San Francisco GateLast week, the air board approved statewide rules requiring cleaner gasoline, reduced methane emissions from landfills and a ban on the sale of refrigerants for air conditioners in cars. A group of environmental advocates advising the air board had ... http://www.sfgate.com/cgi-bin/blogs/sfgate/detail?blogid=14&...

Himfr.com Analyzes China's Inverter Air Conditioner Market

Yahoo FinanceInverter air conditioners ( http://www.frbiz.com/onsale.php ) have currently become the hottest trend in the air-conditioning industry. Himfr's market report shows that sales of inverter air conditioners are getting stronger, the retail ratio is ... http://biz.yahoo.com/prnews/090304/cnw014.html?.v=41

Search results for Air Conditioners

Central Air Conditioner | AC Units | Air Conditioning Units | Home ...

Central air conditioner systems, AC units, air conditioning units, home cooling systems and more from Lennox, the leader in air conditioning.http://www.lennox.com/products/list.asp?type=1

Central Air Conditioners - Carrier Air Conditioning

Compare Carrier central air conditioners and home cooling systems based on energy efficiency, SEER ratings, and sound ratings.http://www.residential.carrier.com/products/acheatpumps/ac/i...

HowStuffWorks "How Air Conditioners Work"

Air conditioners make hot weather bearable. Learn about different kinds of air conditioners and check out air conditioner reviews and buying guides.http://www.howstuffworks.com/ac.htm

Air Conditioner Sales

We offer the best selection of portable air conditioning systems including window systems, humdifiers, heaters, fans & portable air ... http://www.airconditionersales.com/

Air Conditioners, Air Conditioning Unit, Central Air Conditioner ...

American Standard's air conditioners cool the hottest days with reliability you can count on year after year. American Standard Air Residential provides efficient cooling and ... http://www.americanstandardair.com/Products.asp?SuperCategor...

Wikipedia results for Air Conditioners

Air conditioner - Wikipedia, the free encyclopedia

An air conditioner is an appliance, system, or mechanism designed to extract heat from an area via a refrigeration cycle. In construction, a complete system of h eating, v ... http://en.wikipedia.org/wiki/Air_conditioner

Air conditioning - Wikipedia, the free encyclopedia

The term air conditioning refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating ... http://en.wikipedia.org/wiki/Room_air-conditioner

Seasonal energy efficiency ratio - Wikipedia, the free encyclopedia

The efficiency of air conditioners is often rated by the Seasonal Energy Efficiency Ratio (SEER) which is defined by the Air Conditioning and Refrigeration Institute in its ... http://en.wikipedia.org/wiki/Energy_efficiency_ratio

Packaged terminal air conditioner - Wikipedia, the free encyclopedia

A packaged terminal air conditioner (often abbreviated PTAC) is a type of self-contained air conditioning and heating system commonly found in hotels and apartment buildings.http://en.wikipedia.org/wiki/Packaged_terminal_air_condition...

Inverter (air conditioning) - Wikipedia, the free encyclopedia

The inverter tag found on some air conditioners signifies the ability of the unit to continuously regulate its thermal power flow by altering the speed of the compressor in ... http://en.wikipedia.org/wiki/Inverter_%28air_conditioning%29
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Answers for Air Conditioners

holden350chevIs the Australian Army stupid to purchase air-conditioners for there mack trucks ?holden350chevCrikey matey! Would you like tea?stjernekroppDo air conditioners take up more money the lower the temperature?stjernekroppyissaHow do I dispose of old window air conditioners?yissaTry this link. http://www.supremerecycling.com/faq.htm#pickup If this does not assist a search in Yahoo - ewaste and New Jersey. You can find locations that will take or even pickup. Good Lu...Sanjay KHow we get fresh oxygen in window air conditioners?Sanjay KWindow type air conditioners usually has a button/switch that allows you to select either circulating the same air inside or to pull air from outside. As far as the issue of indoor air quality. Ai...mosaleahIs it safe to leave air conditioners running while on vacation?mosaleahThe air conditioner uses more electricity than any other appliance in your household. It should be turned off when not in use for monetary reasons. And it probably is a bit safer as well.
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