Both an A/C unit and a fridge pump heat from one area into another. In the A/C unit the heat is pumped out of the room and into a discharge area, normally the outside atmosphere, thus the room is cooled, wheras for a fridge the heat is pumped from inside the fridge out into the room, thus the inside of the fridge is cooled and the room is warmed. The only difference between the working of the two is that the "room" is a different side of the heat pump.
Because the refrigerator moves heat from the inside of the fridge to the outside, dumping it into the room. On top of that, the actual machine that moves the heat also gets warm, and sheds it heat into the room too. The A/C always have to have two sides/units, to allow it to move heat from inside the room to outside the room. Basically, a room with an A/C works pretty much like a room-sized fridge. There are industrial grade fridges which work like A/C units, with a separate heat dumping unit that can be placed outside the room/building. They take a lot more plumbing to install, so you rarely find them in private homes.
Heat that comes from burning fuels warm the air. The heat also warms anything that lies near it in the environment.
Infrared wave
It warms up pools by Radiation.
Shivering warms the body by increasing metabolism.
an air conditioner because it warms up to make cold air
A water reservoir is to catch excess water in a flowing system. In a car, the bottle holds coolant that overflows from the top of the radiator on the inside when the engine warms up.
The hot water warms the refrigerator, which forces it to turn on to cool it off.
Allowing frozen food to thaw either by leaving out in room temperature or in a microwave defrost cycle. Or when a refrigerator temporarily warms up to melt away frost in the freezer compartment.
Failed thermostat.
sticky valve most likely. give it an oil change and throw some lucas oil conditioner in there
This is because the fridge is cold, and this cold makes the outside of the can cold. Objects get col from the outside, in. Unlike heat, which warms objects from the inside, out,
I would say the glass of coke (served with ice-cubes in it) is colder than the can. The melting ice-cubes in the glass of coke hold it at constant freezing/melting temperature (32F), the can of coke comes out of the refrigerator at the same temperature as the refrigerator (~35F) and warms from there.
Works the same as most cars, using hot coolant. One advantage is in cold weather it warms up faster as it stores hot coolant in a insulated reservoir when parked.
The land warms faster
The sun warms the earth.
soil warms faster than water.