The volume of the typical household refrigerator can be 10, 14, 16, 18, 20 square feet and even more. The common type of domestic refrigerator has a cabinet shaped with compressor, the condenser and receiver fitted in their basement. The size of the refrigerator is defined in terms of the total internal volume of the refrigerator. Vapor-compression uses a circulating liquid refrigerant as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere.

A refrigerator consists of several components like Compressor, Condensers, Expansion devices, evaporator and some accessories for proper functioning like controls (temperature controlling devices), filters, defrost system etc. By raising the pressure, the boiling point of the refrigerant increases. The compressor constricts the refrigerant vapor, raising its pressure, and pushes it into the coils on the outside of the refrigerator.

Household refrigerators are available in various forms and sizes.

In simple words, the refrigerator PTC relay gave a current to start the relay coil motor and the PTC starter winding compressor off the circuit. when a cold body comes in contact with a hot body than the heat flows from hot body to cold … So let us start. Working Principle of Refrigerator. 2.

A refrigerator normally cycles on and off in order to maintain an appropriate temperature, so many people mistakenly think that a quiet appliance has just shut off in its cycle when in fact, its compressor has stopped working.

Hi friends, In this article, I am going to discuss the domestic refrigerator working principle.You will find this article interesting and informative.

1.

The compressor motor capacity ranges from 1/8 to 1/4 HP depending upon the size of the refrigerator.

Most units have both a refrigerator and freezer compartment, but the cooling actually occurs in the freezer, and a fan circulates the cool air into the refrigerator compartment. PTC relay working principle

Working.

Whether the unit is a small household appliance or a large commercial walk-in area, the cooling system works on the same basic principle of a deep freezer. When the hot gas in the coils meets the cooler air temperature of the kitchen, it becomes a liquid. Refrigerator. We know that a single phase motor did not start without starting capacitor or a staring current. The compressor unit is mounted on the rear side of the refrigerator. These refrigerators can have single door, double door, or side doors.
It works on the principle of thermal equilibrium i.e. So the above is a brief and simple explanation of the refrigerator relay and works, so let’s know the working method of a PTC. Working principle of domestic refrigerator The function of the compressor is to raise the pressure of gaseous refrigerant coming from the evaporator.

The starting relay also has overload protection to protect the compressor motor against higher current due to low voltage or tripling of the power supply. 3.


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