TY - JOUR
TI - Experimental investigations with eco-friendly refrigerants using design of experiments technique-mathematical modeling and experimental validation
AU - Mani Kolandavel
AU - Selladurai Vellappan
AU - Murugan Natarajan
JN - Thermal Science
PY - 2014
VL - 18
IS - 12
SP - 363
EP - 374
PT - Article
AB - In this paper mathematical models were developed using design of experiments  technique for the performance prediction of refrigeration system parameters  such as refrigerating capacity, power consumption and coefficient of  performance. The models developed were checked for their adequacy using  F-test. The performances of vapour compression refrigeration system with  different refrigerants R12, R134a and R290/R600a were compared. The  R290/R600a mixture showed 10.7-23.6% higher coefficient of performance than  that with R12 and R134a and it was found that the hydrocarbon mixture with  68% propane and 32% iso-butane could be used as a substitute for R12 and  R134a.