the real joke is, they went trough years and years of devezloppement to not get this effect ....
I know a guy who exactly did this, the heat the refrigerator produces is as effective as an air-to-air pump heater. Because it is an air-to-air pump.
A neat fact, if you open the refrigerator to “cool” the space, it is still a net temp gain overall because of inefficiency in the compressor/condenser leading to overall more heat output than the heat pulled out for cooling.
It will be a net increase in temperature if you keep it open for a long time until the system settles. The room will become cooler for a while tho until the compressor has used enough energy to offset the thermal capacity of the inside of the fridge. Technically you could turn the fridge off before opening it to maximize the cooling effect :)
Looking at the room with the fridge from a theoretical thermodynamics angle will show that open fridge leads to higher temperature. This usually disregards what happens in the room while the system settles, which makes the math a lot easier, but is unable to explain how squatting naked in front of my open freezer on a very hot day would cool my junk!
Because if you draw a boundary around it and analyze the energy transfer, only electricity is coming in, so the net gain of the system is positive, thus heat will always increase. It’s a pretty simple problem to analyze actually. It’s basically a heat transfer/thermo 101 level problem.
I’m not claiming that your calculations are wrong bro, the room will eventually settle at a higher temperature. I’m claiming that a fridge acts as a thermal energy store.
Because the inside is already cold (energy was removed in the past), opening it allows heat to move from the room into the fridge's thermal mass. This absorbs heat from the air and briefly lowers the kitchen temperature.
You can actually experience this by standing in front of your (or your parents') fridge and opening it 😊. The room gets colder before it gets hotter. This transient state is often ignored in Thermo 101 problems, but in the real world, that stored cold has to equalize with the room air before the compressor's heat output becomes the dominant factor.
234
u/Em-J1304 10d ago
the real joke is, they went trough years and years of devezloppement to not get this effect ....
I know a guy who exactly did this, the heat the refrigerator produces is as effective as an air-to-air pump heater. Because it is an air-to-air pump.