Distinguish, differentiate, compare and explain what is the differences between vapour compression and vapour absorption.

Differences between Vapour Compression and Vapour Absorption

  • Vapour Compression uses high grade energy, mechanical work. Vapour absorption uses low grade energy, heat. Therefore may be using exhaust steam from engines etc.
  • In the first one, moving parts are in the compressor and so there is more wear,┬átear, and noise. In the second one, moving parts exists only in the pump, which is a small element of the system. Hence quiet in operation.
  • In compressor, the COP decreases considerably without decrease in evaporator┬ápressure. Vapour absorption system can work on lower evaporator pressure also, without lowering the COP significantly.
  • Vapour absorption no effect of reducing the load on performance while in other performance is adversely affected at partial loads.
  • In vapour compression system the liquid traces in suction line may damage the compressor. In seocnd, liquid traces of refrigerant present in piping at the exit of evaporator constitute no danger.
  • In vapour absorption automatic capacity control is easy. while in compression, it is difficult.






About Author: Jeniffer Fleming