Exergy and Energy Analyses of Dual-Temperature Evaporator Split AC System Incorporated A Capillary Tube and A Two-Phase Ejector

Authors

  • Made Ery Arsana Study Program of Doctoral Engineering Science, Faculty of Engineering, Udayana University, Denpasar City Campus, Bali, Indonesia
  • I Gusti Bagus Wijaya Kusuma Study Program of Doctoral Engineering Science, Faculty of Engineering, Udayana University, Denpasar City Campus, Bali, Indonesia
  • Made Sucipta Study Program of Doctoral Engineering Science, Faculty of Engineering, Udayana University, Denpasar City Campus, Bali, Indonesia
  • I Nyoman Suamir Department of Mechanical Engineering of Politeknik Negeri Bali, Bukit Jimbaran, Bali, Indonesia

Keywords:

Exergy analysis, COS-SAC system, SAC system, energy performance, dual-temperature evaporator

Abstract

This study was aimed to investigate performance of a split type air conditioning (SAC) system applying exergy destruction method. A numerical model was established based on exergy destruction analysis of a Condenser Outlet Split-Split Air Conditioning (COS-SAC) system integrated with dual-temperature evaporator and incorporated capillary tube and ejector as expansion devices. An experimental test system was also established to experimentally validate the model. Two type of refrigerants R-290 and R-22 were involved in the evaluations. The Coefficient of Performance (COP) of the ejector COS-SAC system, exergy destruction, and exergy efficiency were determined and compared with those in the SAC system utilizing capillary tube. The results showed there was a significant improvement in the overall exergy efficiency of the COS-SAC systems. The COP of the COS-SAC system was also found to be better than the COP of the SAC system.

Published

2021-08-04