To cool food correctly, you might not want a refrigerator. It "might" take too long to cool. A freezer might be your best bet for fast cooling.
Also, putting a quantity of hot food in a small refrigerated space will certainly raise the inside temperature a good bit...making the compressor work harder to pull the temperature down. This is an excellent method for compressor failure if that's what you are looking for. Hot meat can even raise the temperature of a small walk-in unit.
Just trying to help.