Numerical simulation Of Energy Efficient Domestic Air Conditioning with Sc-Hx Using Liquid Cooling

Abstract

The present work investigates the experimental and numerical analysis of shell and coil heat exchanger (SC-HX) attached to the domestic air conditioning system for reducing compressor load. Experimental trials were conducted, to find the Coefficient of Performance (COP) of an air-conditioning unit, when the room temperature was reduced from 28oC to 18oC, with different ratios of Anti-freezing materials like ethylene glycol, mixed with water in the ratio of 10:90, 20:80, 30:70, 40:60 and 50:50. R-22 refrigerant was used during the experimental trials. Experimental results were obtained and compared with those of computational fluid dynamics (CFD). Numerical simulation was obtained with ANSYS CFX V14. Heat transfer was observed between the refrigerant and the fluid (ethylene glycol-water mix) in the SC-HX, leading to a reduction in the temperature of the refrigerant at the entry of the condenser. The Energy consumption was reduced significantly from the numerical and experimental results, which can be attributed to the presence of SC-HX which has led to an increase in the overall COP by 22.51% and Overall EER by 22.16%.