which gas used in the refrigerator for cooling?

Question

i know that some chemical are used in the refrigerator but i dont know which is? How cooling is produce inside the refrigerator and how it work.

Answer 1

Freon

Answer 2

HOW IT WORKS

Refrigerators work by the use of phase change heat pumps operating in a refrigeration cycle. An industrial refrigerator is simply a refrigerator used in an industrial setting, usually in a restaurant or supermarket. They may consist of either a cooling compartment only (a larger refrigerator) or a freezing compartment only (a freezer) or contain both. The industry has nicknames for these units as well sometimes referring to them as a “cold box” or a “walk-in.” The dual compartment was introduced commercially by General Electric in 1939.

Some refrigerators are now divided into four zones to store different types of food:

-18 °C (0 °F) (freezer)
0 °C (32 °F) (meats)
4 °C (40 °F) (refrigerator)
10 °C (50 °F) (vegetables)
The capacity of a refrigerator is measured in either litres (EUR) or cubic feet (US). Typically the freezer volume is 100 litres (3.53 cubic feet) and the refrigerator 140 litres (4.94 cubic feet), although these values are highly variable.

Answer 3

Freon or R-12 refrigerants. Sometimes even propane, they are called propane refrigerator.

The basic idea behind a refrigerator is very simple: It uses the evaporation of a liquid to absorb heat. You probably know that when you put water on your skin it makes you feel cool. As the water evaporates, it absorbs heat, creating that cool feeling. Rubbing alcohol feels even cooler because it evaporates at a lower temperature. The liquid, or refrigerant, used in a refrigerator evaporates at an extremely low temperature, so it can create freezing temperatures inside the refrigerator. If you place your refrigerator's refrigerant on your skin (definitely NOT a good idea), it will freeze your skin as it evaporates.
There are five basic parts to any refrigerator (or air-conditioning system):

Compressor
Heat-exchanging pipes - serpentine or coiled set of pipes outside the unit
Expansion valve
Heat-exchanging pipes - serpentine or coiled set of pipes inside the unit
Refrigerant - liquid that evaporates inside the refrigerator to create the cold temperatures
Many industrial installations use pure ammonia as the refrigerant. Pure ammonia evaporates at -27 degrees Fahrenheit (-32 degrees Celsius).

The basic mechanism of a refrigerator works like this:
The compressor compresses the refrigerant gas. This raises the refrigerant's pressure and temperature (orange), so the heat-exchanging coils outside the refrigerator allow the refrigerant to dissipate the heat of pressurization.

As it cools, the refrigerant condenses into liquid form (purple) and flows through the expansion valve.

When it flows through the expansion valve, the liquid refrigerant is allowed to move from a high-pressure zone to a low-pressure zone, so it expands and evaporates (light blue). In evaporating, it absorbs heat, making it cold.

The coils inside the refrigerator allow the refrigerant to absorb heat, making the inside of the refrigerator cold. The cycle then repeats.

Answer 4

Freon,the same gas that's in a cars air conditioning system.The refrigerator pumps out warmer air trapped inside of the refrigerator(near the top),while releasing cooler near the inside bottom of the refrigerator...tom science

Answer 5

refigerant, specifically, r-12 or now i beleive it is 134-a also referred to as "freon" it is pumped through a sealed system by a compressor, to one coil and copper line removing heat and humidity pumping it to another coil that it removing the heat . on the back of the fridg. the cooling effect comes from changing the refrigerant from a liquid to a gas internally with what is referred to as a "metering device" either smaller tubing or an orfice that restricts the flow of ref. kind of like how liquid comes out of a spray bottle. then it becomes much colder in gas form

Answer 6

Taimoor has the best answer so far. I would like to add that old refrigerators used ammonia, then came freon, nowadays it's puron (r134a). Freon is only allowed to be used in recharging older systems.

Answer 7

dry ice is used in refrigerators and it is made up of carbon dioxide

Answer 8

i believe it is called Freon

Answer 9

freon

Answer 10

freon