How Does A Refrigerator Work?

How Does A Refrigerator Work?

The refrigeration cycle occurs in a closed-loop, and it begins with the compression of a refrigerant such as Freon. The compressor pumps the compressed gas into the condenser where heat is released from the area by air or water, which cools down the gas. In most residential units, the hot compressed gas moves through metal coils cooled outside by either an air conditioner or a fan.

This sends heat through ceiling ducts to your home’s living spaces while it collects more heat through contact with other metallic surfaces, causing its temperature to drop yet again. The resulting cooled-down heated-up vapor then goes back to another compressor where it is boosted for use again, releasing heat to its previous condenser location

What part of a fridge makes it cold?

The refrigerant gas is pressurized by the compressor, drawing on energy supplied by the electrical parts of the system. As the pressure inside increases, so does its temperature—and therefore also increases in both volume and velocity.

This causes it to expand rapidly into a gas that flows through the condenser coils (exterior tubes) where it gets rid of heat, then becomes more condensed as it passes through another set of coils in the cold part of your refrigerator. These are properly known as evaporator coils, but they are commonly referred to as “cooling coils” or simply “evaporators.” The term evaporation generally connotes cooling when in fact evaporation is only one phase change that can occur during refrigeration cycles.

What are the four main components of a refrigeration system?

Evaporator, Condenser, Compressor, and Expansion Valve.

1) Compressor:

The compressor is responsible for boosting the gas pressure which allows it to flow through cold coils in your fridge where heat is released into the surrounding air. After passing through the cold coils, it’s even more condensed than before and flows through a hot coil. The heat from this coil is transferred into your fridge thus cooling all its contents.

2) Hot Gas Bypass or Heat Exchanger:

This serves as a “safety” mechanism by preventing dangerously high pressures from building up within the sealed system. In other words, when you close all of your refrigerator’s doors completely–the smaller amount of cool air inside prevents the compressor from cooling it sufficiently. To prevent a build-up of pressure, this safety valve will open and release some warm air back to the room while equalizing the pressure between the inside and outside of your fridge. Eventually, you should hear a clicking noise as it re-closes itself.

3) Condenser:

The condenser coils are located outside of your refrigerator where they expel heat into your kitchen air–and subsequently, cool down your refrigerator by removing about 70% of its heat load. This component must be exposed to the surrounding area so that it can easily get rid of heat through conduction or convection with other ambient objects such as a tabletop, countertop, or wall. If coils were instead enclosed in a sealed cabinet, the heat would build up to dangerous levels and cause your fridge to explode.

4) Evaporator:

The cold coils are located inside the refrigerated space where they draw moisture out of the air, causing it to cool down. Typically, these coils are made from aluminum or copper tubing that’s silver in color (for its ability to quickly conduct away heat). The fact this part is located within your refrigerator instead of the outside has everything to do with maximizing cost savings since it does not need to be cooled by ambient air like the condenser.

Is refrigerator a heat engine?

Yes, A heat engine’s sole purpose is to convert heat energy into work by first taking a relatively small amount of heat and then expanding it outwards from being confined in a small space. In this case, the refrigerator uses gasoline as its fuel, which is mixed with air inside the combustion chamber before ignition.

Once it’s been ignited, this chemical reaction causes the piston to be forced downward as it increases in pressure as well as temperature. The piston reciprocates up and down within an enclosed cylinder that contains water or some other coolant (which you might see bubbling during this process).

This allows for two expansion stages; one where it transforms into gas form at low pressure while remaining at high temperature–and the other where both temperature and pressure drops as the temperature drops.

When the piston is finally forced back up to its original position, a second compression stage occurs where it becomes very hot again but at a lower pressure than before. That warm air then continues through an exhaust where it’s blown into your refrigerator’s condenser coils that expel their heat into your kitchen after which, cold water inside of tubes further cools it down until it can be circulated through your fridge once more.

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