Performance of ejector refrigeration cycle for automotive air conditioning

• Main Authors: Maziar, Reza, Kasni, Sumeru, Senawi, Mohd. Yusoff, Ani, Farid Nasir
• Format: Conference or Workshop Item
• Published: TRANS TECH PUBLICATIONS INC. 2016
• Subjects: TJ Mechanical engineering and machinery
• Online Access: http://eprints.utm.my/id/eprint/66665/; https://doi.org/10.4028/www.scientific.net/AMM.819.202

In this study, two experiments were performed,one with the conventional compression refrigeration cycle (CRC) and the other with an ejector refrigeration cycle (ERC). The CRC system for automotive air conditioning was designed, fabricated and experiments were conducted. The system was then retrofitted with an ejector as the expansion device and experiments were repeated for the ERC system. Calculations of the entrainment ratio, compressor compression ratio and coefficient of performance (COP) were made for each cycle. The calculations showed that ERC has some advantages over the CRC. In this study, an average improvement of 5% in COP has been obtained for the ERC compared with the CRC.