Outdoor wiring diagram

INTRODUCTION OF REFRIGERATION :-

Refrigeration can be simply defined as the process of transferring heat from the

substance to be cooled to some other substance like water or air.

Q. What is refrigeration ?

Ans. It is the method for producing cold and protecting our food against spoilage.

With this method we can preserve perishable food stuffs in original state for certain period.

It can be defined as it is the process of transferring heat from the substance to be

cooled to some other substance like water or air.

Q. For what purpose refrigeration is used ?

Ans. For protecting food against spoilage and preserving it in its original state for

certain period.

Q. How cooling is produced by the process of refrigeration ?

OR

What is the principle of refrigeration ?

Ans. The principle of refrigeration is based upon the fact that evaporation causes

cooling. Whenever evaporation takes place of a liquid, it gives cooling effect.