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How is an evaporator made?

How is an evaporator made?

Evaporator coils are made from copper, steel, or aluminum because these metals conduct heat easily. Most residential AC evaporators consist of tubes bent into U-shapes and set into panels. As the air conditioner runs, the compressor pulls cold, low-pressure liquid refrigerant through the tubing in the evaporator coil.

How does a refrigerator evaporator work?

An evaporator fan draws air from the refrigerator and blows it over the evaporator coils. The liquid refrigerant absorbs heat from the air and the air blows back into the refrigerator at a lower temperature, cooling the refrigerator. The liquid refrigerant starts to vaporize as it heats up and moves to the compressor.

Which evaporator is used in refrigerator?

The household fridges use plate surface evaporators. The coil is attached to the plate in the form of an evaporator. The internal and external surface of the finned evaporators are made of the same copper coil.

How is the cooling inside of a refrigerator produced?

The evaporator is located inside a refrigerator and is the part that makes the items in the refrigerator cold. As the refrigerant turns from a liquid into a gas through evaporation, it cools the area around it, producing the proper environment for storing food.

What are the parts of evaporator?

Evaporator Coils and the Split System

  • Hot Side – Typically contains the condensing coil, the fan and the compressor, as well as various electrical switches and capacitors.
  • Cold Side – Usually consist of a cold coil and an expansion valve, typically assembled as a sub-section of your air handler or furnace system.

Where is the evaporator located in a refrigerator?

The evaporator coils sit in the back of the freezer compartment of a refrigerator and look like a radiator. The back wall of the freezer is actually the cover of the evaporator coil and can easily be opened with a screwdriver.

Do all refrigerators have evaporators?

Typical refrigerators use a single evaporator, or cooling coil, in the freezer section, alongside a circulating fan. But that removes moisture from the air, and the cold, dry freezer air lowers humidity levels in the refrigerator section, which is bad for many foods.

Where is refrigerator evaporator coil?

Does evaporator reject heat?

The hot liquid refrigerant then passes through an expansion valve, where the refrigerant expands to a low pressure and a low temperature. During its circuit around the system, the refrigerant picks up heat at the evaporator and rejects that heat (along with the energy added by the compressor) at the condenser.

What is the cooling agent in refrigerator?

A refrigerant in gas form, HFC-134a is generally the cooling agent used in modern refrigerators. Older models used Chloro-Fluoro-Carbon (CFC), but it was found to be harmful to the environment. When HFC-134a is compressed, it heats up.

How does the evaporator work in a refrigerator?

Some refrigerator models utilize fans to blow the air from inside the food compartments toward the evaporator coil to quickly absorb heat. After it has absorbed as much heat as possible, the refrigerant is then pumped back into the compressor’s refrigeration cycle.

How does the condenser work in a refrigerator?

A refrigerator works by removing the warmth from the air within its interior compartments and relaying that heat to the air outside. Beginning in the evaporator, the freon is heated and begins to draw heat from the air within the refrigerator. Having absorbed this heat, the freon is then routed to the condenser by the compressor.

How does the coolant in a refrigerator work?

Refrigerators work by removing the warmth from the air within their interior compartments and relaying that heat to the air outside. The coolant (freon) accomplishes this transfer as it passes through a circuit, moving from the evaporator to the condenser.

How does the expansion valve in a refrigerator work?

The expansion valve controls the amount of cooled refrigerant gas that’s released into the refrigerator evaporator. As that gas enters the refrigerator evaporator, it’s pulled forward by the air pressure that’s created by the compressor on the opposite side.