The refrigerant used in the VCR based refrigerant cycle rejects heat in _______

The refrigerant used in the VCR based refrigerant cycle rejects heat in _______

Right Answer is:

The compressor

SOLUTION

Refrigerator Arrangement

The refrigeration cycle is used to produce a cooling effect. In this cycle also, a working medium is required to receive and reject heat. The working fluid used in the refrigeration cycle is called a refrigerant. The commonly used refrigeration cycle is the vapor compression refrigeration (VCR) cycle. A VCR cycle is shown in Fig. which consists of four main components

  1. Compressor
  2. Condenser
  3. Expansion valve
  4. Evaporator

  • The refrigerant enters the compressor as a vapour and is compressed to the condenser pressure (1-2).
  • It leaves the compressor at a relatively high temperature (more than atmospheric) and condenses in the condenser (2-3) by rejecting heat to the surrounding medium.
  • In a condenser, heat is rejected isobarically to the surrounding and cools down to saturated liquid to state point 4 where it expands to state point I while the enthalpy of the liquid remains constant (isenthalpic process). Again the
  • The working medium enters a throttle valve where its pressure and temperature drop drastically (3-4).
  • The low temperature-working medium then enters the evaporator, where the refrigerant evaporates by absorbing heat from the refrigerated space (4-1).
  • The cycle is completed as soon as the refrigerant re-enters the compressor.