What is Refrigeration?
Refrigeration (also termed as cooling) is the technology that deals with the phenomena and processes of body cooling. Thus cooling means reducing the internal energy of an object by removal of energy. It is being done by lowering its temperature.
For the process of refrigeration, such equipment uses the liquids which are usually converted to gas at very low temperatures. Mostly these are using chlorofluorocarbons i.e. freons as coolants. The fridge has a maze of hermetically sealed interconnected tubes, and inside this tube, Freon is constantly circulating. Freon is transferred from the liquid state to the gas state and vice versa without being heated. This liquid Freon absorbs the heat, and with a rise in temperature, it turns into a gas. As a result the temperature of the substances kept inside it also falls.
Importance of refrigerator?
The fundamental reason for having a refrigerator is to keep food cold. Cold temperatures help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacteria (which all food contains) so that it takes longer for the bacteria to spoil the food.
