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 Buying an air conditioner, DYK Fact #626
Bernard
Posted: 08:03 Tuesday 27 March 2012


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Did you know? Buying an air conditioner entails buying the right size of air conditioner that will fit your requirements. Otherwise you end up buying the wrong size that either is too large or too small compared to the space you want to cool. Such a purchase becomes a bad investment.With the proper size of air conditioner you can save money in the short run and bring down the operating cost in the long run.


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Bernard
Posted: 08:05 Tuesday 27 March 2012


Old Stone Age


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Did you know? Air-conditioning sizing is an important aspect of purchasing because if the air conditioner is large for the area the cooling might not be uniform with intermittent switching off and switching on. On the other hand if a small unit is installed in the same area it might have to work continuously to maintain the required temperature but might be more efficient working that way than a larger unit. Such small ac unit working continuously at a lower level is also capable to dehumidifying efficiently to make the air in the room cooler.


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Sylvia
Posted: 00:37 Saturday 31 March 2012


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I have just read about AIR-CONDITIONING in The Penguin Dictionary of Architecture and Landscape Architecture.

Did you know? “Mechanical systems for ventilating and controlling, especially lowering, the temperature and humidity of enclosed spaces were developed in the early [19th century] in the USA. By 1889 Carnegie Hall, New York, had an air-cooling system using blocks of ice and in 1904 a system using ammonia was installed in the New York Stock Exchange. But the first true air-conditioning system was invented by Willis Haviland Carrier (1876–1950) in 1902–6 and the first large office building to be completely air-conditioned was the Milam Building, San Antonio, Texas, in 1928. The PSFS Building, Philadelphia, of 1932 by Howe and Lescaze was the second. Individual room air-conditioners were being manufactured by the late 1920s but individual window-mounted air-conditioners were mass-produced only after the Second World War.”


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Sophie
Posted: 11:42 Wednesday 23 May 2012


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Did you know? Air conditioners are more versatile than radiators because cooling a room is more straightforward than heating it. In order for a radiator to be effective in heating the room, it has to be placed close to the ground. If it is placed close to the ceiling, then only the air next to the ceiling is heated; being less dense than the cold air next to the ground, it will not come down and displace it. On the other hand, an air conditioner can be placed anywhere. If you place it close to the ground, it will cool the air close to the ground while the air close to the ceiling remains warm – but that does not matter because people in the room are mostly going to be on the ground. Still, you can place your air conditioner close to the ceiling if you want to cool the air next to the ceiling as well; when the air next to the ceiling is cooled, it will be displaced by warmer air at ground level.


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