Virang H Oza

Associate Professor, Shri Labhubhai Trivedi Institute of Engineering and Technology, Rajkot, Gujarat, India

Abstract

Generator-absorber heat exchanger (GAX) based absorption refrigeration system provides better performance as compared conventional absorption refrigeration system. Ammonia-water pair is used as working fluid pair in this study. This article presents thermal optimization of GAX based absorption refrigeration system using Taguchi method of design of experiments to find optimum parameters for the maximum COP. Based on Taguchi design, maximum COP is obtained as 1.346 at condenser temperature (Tc )= 35°C, evaporator temperature (Te )= 2°C, generator temperature (Tg )= 180°C, and effectiveness of refrigerant heat exchanger (εRHE) = 0.8. Results also indicate that condenser temperature has maximum influence on the performance of the GAX based absorption refrigeration system.

Keywords- absorption refrigeration, COP, GAX, Taguchi design.