How does food placed in a refrigerator cool down?
February 18, 2007 7:29am CST
I would like to know the process involved in warm food being cooled down when placed in a refrigerator.
18 Feb 07
The refrigerator uses the principle of heat movement called conduction. Heat moves from higher temperature to lower ones. An object that is much cooler tend to absorb the heat. Refrigerators use refrigerants with temperatures below freezing point. The heat of the food put into them are normally at room temperature, this heat is absorbed by the refrigerant making the food cooler and frozen when put in the freezer. This heat is then expelled by the evaporators normally located at the back of the refrigerators which we feel are always warm.