How many meters should the refrigerator be from the wall?

Need to keep the distance between the refrigerator and the wall 10-20CM. The more heat the refrigerator takes away, the greater the heat dissipation of the metal sheets on both sides of the refrigerator.

The design of the refrigerator is to stick the condenser on the left and right side plates, and then cool the refrigerator through heat conduction between the condenser and the metal plates on both sides and convection heat exchange between the metal plates on both sides and the air, so the metal plates on both sides of the refrigerator are hot.

There is a compressor behind, which consumes a part of electric energy to compress refrigerant gas to do work and heat, so the temperature of the compressor is also high. Generally, the defrosting water in the refrigerator flows to the water pan at the top of the compressor to cool down, and there is convection heat transfer between the compressor space and the external environment.