Experimental Analysis of Alternate Refrigerant Mixtures in Refrigeration System

¹ Department of Mechanical Engineering, Rajalakshmi Engineering College, Chennai 602 105, Tamilnadu, India
² Department of Mechanical Engineering, Mahendra Institute of Technology, Mallasamudram 637503, Tamilnadu, India
³ Department of Electrical and Electronics Engineering, Government College of Engineering, Erode 638 316, Tamilnadu, India
⁴ Department of Electrical and Electronics Engineering, Karpagam Academy of Higher Education, Coimbatore 641 021, Tamilnadu, India
⁵ Department of Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbatore 641 008, Tamilnadu, India
⁶ Department of Electronics and Communication Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram 522 302, Andhra Pradesh, India
⁷ Department of Mechanical Engineering, Nandha College of Technology, Perundurai 638 052, Tamilnadu, India

^* Corresponding author: dr.r.girimurugan@gmail.com

Abstract

This study focuses on conducting experimental analyses to assess the impact of alternative refrigerant blends within a vapor compression refrigeration system, with the aim of replacing the existing R134a refrigerant. These refrigerant blends are formulated by combining R600a, R1270, and R290 in four distinct mixing ratios. The assessment considers a range of output parameters for these hydrocarbon mixtures, in addition to their environmental implications related to potential global warming and depletion of ozone layer. Based on the comprehensive evaluation of various factors, it has been determined that the refrigerant blends of R290/R600a/R1270 at proportions of 10% R290 / 20% R600a / 70% R1270 by weight and 20% R290 / 20% R600a / 60% R1270 by weight emerge as the most viable alternatives among the tested refrigerant mixing ratios, surpassing R134a in terms of suitability.