How do refrigerators cool the air inside?

Answer 1

All the cooling effect comes from the freon (or another refrigerant) when it is throttled.

Throttling: Imagine holding a garden hose where water flows out at the end. If you cover the end with your fingers, the hose will not be totally covered, so some water will spray out. This spraying produces a cooling effect on the water.

That is what happens to freon inside a refrigerator.

The rest of the refrigeration cycle is all meant to return the freon to its "normal" state so that it can be reused. The cycle is repeated over and over.

Answer 2

The refrigerator has a compressor. The compressor compresses the gas that is held in the tubes. When any gas is compressed it gets hot. The hot gas is transferred through a heat exchanger or a cooler. The air cools the heat exchanger and the hot gas. The gas when cooled is still under pressure.

The high pressure gas is injected through an evaporator. The pressure on the other side of the evaporator is less and the gas expands. Because there is no heat supplied, the gas cools and condenses into a liquid. The liquid is below freezinf temperature of water. A cold liquid is circulated through coils inside the refrigerator. A fan is used to blow across the coils and the cold air cools the refrigerator.

An air conditioner works excatly the same way.

Answer 3

The refrigerator has a liquid refrigerant that has a boiling point about 40 degrees below the freezing point of water. It passes in tubes in the sides of the refrigerator as a liquid. The heat from the stuff in the refrigerator is enough to boil the liquid to a gas. The gas is then compressed, which causes the heat to be "squeezed out" into the room, and the gas liquifies. BTW. This is why you can't use a refrigerator to air condition a room.

Answer 4

I'm no chemistry expert, but here are the basics.

There are pipes that run through the refrigerator compartment. They contain Freon or some other coolant. This coolant runs through the compartment, absorbs heat, and is pumped to the bottom of the fridge. A fan blows air out the bottom of the fridge. It hits the coolant coils and blows the excess heat out the bottom. You may notice that the air that comes out of your fridge bottom is a little warmer than the room temperature air. This fan is sucking little bits of heat out of the compartment slowly but steadily. Cold air is really "warm air with the heat energy sucked out of it".

The reason Freon is often used is because unlike water, it will not freeze at really low temperatures. It can still pass through the coolant pipes, and since this makes the pipes inside the fridge compartment really cold, it is able to suck heat out of the compartment and make the food cold.

Answer 5

As is the case with air conditioners, fridges artwork with the help of changing warmth. the interior the fridge is cooled with the help of drawing that ability into the coils on the outdoors (often the back) of the fridge and dissipating it interior the kind of warmth. Being a small area a garments closet will shop the warmth, even nevertheless the fridge door has been left open. The cooling is principally centred interior the fridge even nevertheless some chilly air will use up interior the closet to boot. The chilly air could desire to sink to the floor element of the closet, whilst the warmer air could desire to upward push in direction of the ceiling. this could be an somewhat stupid ingredient to do, which i think you already understand. The fridge could be competing with itself to warmth and funky the air interior the closet. the electrical powered agency may be the only winner of this opposition.

Answer 6

freon flows through copper tubing, and fans blow the cool air inside. if you need more answers go to wikipedia.org