15 March 2016

Evaluating Alternative Refrigerants for High Ambient Temperature Environments

To comply with the Montreal Protocol requirements, developing countries have started the phase-out of
ozone depleting substances such as hydrochlorofluorocarbon (HCFC) refrigerants in 2015, and they expect
them to reach 35 % reduction in 2020. This commitment to start the phase-out of HCFC refrigerants, especially
R-22, in developing countries is seen as an opportunity to introduce lower Global Warming Potential (GWP) refrigerants and to leapfrog the need to go through the high-GWP hydrofluorocarbon (HFC) refrigerants.
This paper summarizes an investigation of the performance of lower GWP refrigerants in mini-split
air conditioning units operating at high ambient temperature environments that are typically experienced in
some of the developing countries.