What's in the fridge?
By Amruth, 1st Jan 2011 | Follow this author
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Posted in WikinutGuidesScienceHome Experiments
To cool the inside of a fridge you have to extract the heat. This is done by using a liquid which has a low boiling point.
What's in the fridge?
Apart from ice-cream and other foods, refrigerators contain the machinery that makes them cold. To cool the inside of a fridge you have to extract the heat. This is done by using a liquid which has a low boiling point. Releasing it into low pressure pipes inside the fridge causes it to evaporate, absorbing heat from the fridge to do so. The same effect is produced if you wet your finger and let it dry. Your finger will feel cold because the evaporating liquid takes heat from it. Finally the vapour is pumped into pipes outside the back of the fridge and compressed, causing it to become liquid again and give off heat. The pipes feel warm if you touch them. In this way the vapour (called the refrigerant, called froen) carries heat from inside the fridge to the outside.
Comments
2nd Jan 2011 (#)
Interestng.
You and yours have a healthy and happy new year.
Thank you for sharing.:)
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15th Jan 2011 (#)
Great read, thanks for that :D
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8th Feb 2012 (#)
Great share thank you.
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13th Apr 2012 (#)
Good - not many are aware - siva
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