Question

The absorption refrigeration cycle is devised by replacing the mechanical energy of the compressor in the vapor-compression refrigeration cycle with which of the following. (5 points)

	A.	Thermal energy
	B.	Vibration energy
	C.	Kinetic energy
	D.	Potential energy

Answer 1

Answer. (A) Thermal energy

The absorption refrigeration cycle is devised by replacing the mechanical energy of the compressor in the vapor-compression refrigeration cycle by Thermal energy.

Vapor Absorption System: it uses the low grade energy sources such as waste heat from furnaces, exhaust steam etc. for compression.

Vapor Compression System: The Vapor compression system required high grade of energy such as electrical or mechanical energy for operating compressor which is an essential part of VC refrigeration system.

In vapor compression refrigeration, the compression is done by mechanical energy with moving parts while in absorption refrigeration it is done by thermal energy.