Why are fridges in cold climate countries not mounted into the wall of a house so the ambient air could cool the inside?
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One. You want to tell me you have never seen a mullion heater in a fridge? Every fridge has one.
Two. I am NOT talking about fiction loses in a compressor. Heat from conversion losses (electrical to mechanical is never above about 80%). That heat comes directly from the motor windings.
Three. Heat of compression is all about physics and nothing more. If you decrease the volume and increase the pressure of any gas, you increase its temperature. This heat is removed through the condensing unit and expelled to the room.
Your comment states that practically no heat is added to a room by a modern refrigerator. The fact that condensor section mixed that heat with room temp air might APPEAR to be highly efficient and less palpable, it is, nonetheless, BTUs being added. And apparently more than you are aware of.
Kinda like a heat pump. Lots of people think they don’t heat well because they typically output air that is between 90 and 110 degrees without the auxiliary electric strip heaters working, when we are all used to a gas furnace giving us 140 degrees air. They both put the same number of BTUs per hour into the structure, just at different rates.
Look, pal, I’m not trying to say you don’t know your job. When I was in my early 20s repairing appliances, I knew many techs who were excellent at diagnosing and repairing. They are all still my friends and each had my highest respect. That doesn’t mean they understand the intricacies of the systems they worked on as I now do. And all of them acknowledge that.
I progressed through the years (I’m 70) to become an engineer. Go in peace brother.
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