Question

Why the wall of refrigerator has two layer ​

Answer 1

Answer:

2 may be carried out without the use of a fan or other air propelling means. ... The cushion of air in said space is, in effect, an insulator under summer operating cohditions, preventing transmission of heat through the outer walls from reaching the refrigerated space.

Answer 2

Answer:

Explanation:

Foem and thermacol is bad conductor of heat that's why Refrigerator have double walled body filled with foem. PUF (Polyurethane) rigid foam is the insulating material which is most widely used throughout the world for refrigerators and freezers.