Vapour compression refrigeration system: Definition, Components, Principle, Working, Disadvantages, Applications [ Pdf]

What is Vapour compression refrigeration system?

  • Vapour compression refrigeration system is one of the type of refrigeration system, Extensively used in refrigeration, Air conditioning for Industrial, Domestic, and Automobile uses.
  • This system uses the compressor to compressed the refrigerant.
  • The Refrigerants uses in VCR are NH3, R-134a, R-12, R-22 etc.

Vapour compression refrigeration system diagram:

Vapour compression refrigeration system diagram

Construction:

The key components of a vapour compression refrigeration system are Expansion Valve, Compressor, Condenser, Evaporator.

COMPRESSOR:- Is Used to Compressed the Refrigerant to High Pressure.

EVAPORATOR:- is Used to Absorb Heat From The Enclosed Space with the Help of Refrigerants.

CONDENSER:- is Used to Exchange Heat of Refrigerant with Cooling Medium may be air or Water.

CONDENSER:- is Used to Exchange Heat of Refrigerant with Cooling Medium may be air or Water.

EXPANSION:- Valve Used in System to Convert High Pressure, High-Temperature Refrigerant to Low Pressure, Low Temperature.

Working of vapour compression refrigeration system:

1] When the Refrigerant Come Inside the Compressor, Compressor Compress the Refrigerant And Increases Pressure & Temperature. At Exit of the Compressor Refrigerant Is in the form of Vapour State.

2] After Coming From Compressor, Hot Vapour Refrigerant Enters into the Condenser. In Condenser, Refrigerant gets Cooled by a Cooling Medium. Hence Vapour Refrigerant Converted into Liquid State.

3] After Condenser, Liquid Refrigerant Enters into the Expansion Valve. By Expanding the Refrigerant, Expansion Valve Reduce the Pressure, Temperature of Refrigerant. Due to Expansion Liquid Refrigerant Converted into Vapour State.

4] After the Expansion Valve, Vapour Refrigerant Enters into the Evaporator. In Evaporator, Refrigerant absorbs the Heat From Enclosed space & gets Heated.

After Evaporator, Refrigerant Again Enters into Compressor.

Vapour compression refrigeration system advantages:

The advantages of vapour compression refrigeration system are as follows

  1. VCR has High COP
  2. It has Less Running Cost.

Vapour compression refrigeration system disadvantages:

The disadvantages of vapour compression refrigeration system are as follows

  1. Initial Cost of VCR is High.
  2. Need Prevention of Refrigerant Leakage.
  3. Refrigerant required is costlier.

Vapour compression refrigeration system applications:

The applications of vapour compression refrigeration systems are as follows

  1. Domestic Refrigerator.
  2. Industrial Refrigerator.
  3. Domestic Air Conditioning. 

FAQs:

  1. How does a Vapour compression refrigeration system work?

    The vapour compression refrigeration system works in four stages are Compression, Condensation, Expansion and Evaporation.

  2. What are the 4 stages of vapour compression refrigeration cycle?

    There are 4 stages of vapour compression refrigeration cycle are Compression, Condensation, Expansion and Evaporation.

  3. Where is Vapour compression refrigeration system used?

    A vapour compression refrigeration system is used in the Industrial Refrigerator, Domestic Refrigerator, Air conditioner.

  4. What are the limitation of Vapour compression refrigeration system?

    Vapour compression refrigeration system has limitations that Its capital cost is high as well as it requires costly refrigerant.

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