Performance analysis of ejector based vapour compression refrigeration system

Abstract

With the rapid development of society, the shortage of energy and pollution of the

environment have become more serious. The automobile industry is primarily an

energy consuming one, where each modern automobile is equipped with an air

conditioning system for comfort. The air conditioning systems in automobiles

consumes more engine power, which results in the increase of oil consumption. For

energy saving, many researchers put their attention on the recovery and utilization of

automobile waste heat. Therefore, the project named as "Performance Analysis of an

Ejector Based Vapour Compression Refrigeration System" is proposed for energy

saving and exhaust emission.

This kind of refrigeration system consists of two branches, a traditional vapour

compression cycle and an ejector driven cycle, which introduces an ejector to

compress the refrigerant vapour. In this dissertation, we designed a hybrid structure

for ejector based vapour compression refrigeration system and carried out various

experiments to predict the system performance on the test platform. Finally, the

experimental results show that the ejector based refrigeration cycle has better system

performance compared to traditional refrigeration cycle under different operating

pressure and temperature. This can be further applied to automobile industry for

waste heat recovery and energy efficiency.