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Q.

What is the history of Air -conditioner ? Was it really invented for cooling room ?

Tags: travel, science, air
Asked by joyesh chakraborty, 06 May '10 10:09 pm
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Answers (2)

1.

The first modern electrical air condition system was designed in 1902 by Willis Haviland Carrier in Syracuse, NY. It was originally invented to control the temperature and humidity in a printing plant to help keep the paper from changing dimensions and throwing off the ink alignment. This technology was soon developed to meet workplace demand and was adapted to provide comfort for homes and automobiles so The Carrier Air Conditioning Company of America was born. The residential application of his technology boomed in the 1950s.
The first air conditioning units used toxic or flammable chemicals such as ammonia, propane and methyl chloride which were dangerous if they leaked. Freon was developed by Thomas Midgley Jr. in 1928 and was a much safer chemical. However it was later found to harm the atmosphere and deplete ozone. Air conditioning technology continues to advance and become more energy efficient but I for one am extremely glad that it makes our modern existence so comfortable. i ...more
Answered by Sowmiya, 06 May '10 10:30 pm

 
  
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2.

In the 1600s Cornelius Drebbel demonstrated "turning Summer into Winter" for James I of England by adding salt to water

In 1758, Benjamin Franklin and John Hadley, professor of chemistry at Cambridge University, conducted an experiment to explore the principle of evaporation as a means to rapidly cool an object. Franklin and Hadley confirmed that evaporation of highly volatile liquids such as alcohol and ether could be used to drive down the temperature of an object past the freezing point of water. They conducted their experiment with the bulb of a mercury thermometer as their object and with a bellows used to "quicken" the evaporation; they lowered the temperature of the thermometer bulb down to 7F while the ambient temperature was 65F. Franklin noted that soon after they passed the freezing point of water (32F) a thin film of ice formed on the surface of the thermometer's bulb and that the ice mass was about a quarter inch thick when they stopped the experiment upon reaching 7F. ...more
Answered by PARTHA PATHAK, 06 May '10 10:36 pm

 
  
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