The Bell-Coleman cycle is also known as:

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  1. Reversed Brayton cycle
  2. Brayton cycle
  3. Rankine cycle
  4. Carnot cycle

Answer (Detailed Solution Below)

Option 1 : Reversed Brayton cycle
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Concept:

  • Bell Coleman cycle is also known as Reversed Brayton cycle or Reversed Joule cycle
  • The working fluid of the Bell Coleman refrigeration cycle is Air.
  • This system of refrigeration is used for Air Craft refrigeration and it has light weight.

04.11.2017.020

where

  1. Process 1 2: isentropic compression
  2. Process 2 3: constant pressure heat rejection
  3. Process 3 4: isentropic expansion
  4. Process 4 1: constant pressure heat absorption 

Air Refrigeration System and BellColeman Cycle or Reversed Brayton Cycle:

  • In the air refrigeration system the air is taken into the compressor from the atmosphere and compressed.
  • The hot compressed air is cooled in a heat exchanger up to the atmospheric temperature (in ideal conditions).
  • The cooled air is then expanded in an expander. The temperature of the air coming out from the expander is below the atmospheric temperature due to isentropic expansion.
  • The lowtemperature air coming out from the expander enters into the evaporator and absorbs the heat. The cycle is repeated.
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