What is the role of capikary tube in refrigeration cycle

Question

Accepted Answer

The capillary tube is a component in the refrigeration cycle that helps regulate the flow of refrigerant.

The capillary tube is a small, narrow tube made of copper or aluminum.
It is located between the condenser and the evaporator in the refrigeration system.
Its main function is to restrict the flow of high-pressure liquid refrigerant from the condenser to the low-pressure evaporator.
By creating a pressure drop, the capillary tube allows the refrigerant to expand and evaporate, absorbing heat from the surroundings.
The length and diameter of the capillary tube determine the flow rate and pressure drop.
A shorter and narrower capillary tube will result in a slower flow rate and higher pressure drop.
On the other hand, a longer and wider capillary tube will allow for a faster flow rate and lower pressure drop.
The capillary tube acts as a metering device, controlling the amount of refrigerant entering the evaporator coil.
It helps maintain the proper balance between the high-pressure and low-pressure sides of the refrigeration system.
Examples of refrigeration systems that use capillary tubes include domestic refrigerators, air conditioners, and small cooling units.

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