What is the current status of low-GWP refrigerants? The HPT Annex 54 Annual Report for 2019 is published

The Annual Report of HPT Annex 54, Heat pump systems with low GWP refrigerants , is now published on the HPT Website. The report provides a comprehensive, up-to-date review of current research, product development and regulation status of low-GWP refrigerants for the heat pump application. It summarizes the collective efforts by researchers, engineers and regulation committees across the industry.

Some issues presented in the report include a review on progress towards utilizing flammable refrigerants, recent regulations and research advancements in bringing low-GWP refrigerants to residential AC systems, current national and international standards and policies for residential and commercial heat pump systems with low-GWP refrigerants, and the application of low-GWP refrigerants in high temperature heat pumps.

Further, two low-GWP refrigerant candidates for chilling and air conditioning are discussed. Finally, on-going activities in Italy, and a comprehensive review of refrigerant regulations, initiatives and market progress in Japan, are presented.

This report aims at providing a much needed review and update on low-GWP refrigerants for heat pump application, and will be a good reference for researchers, engineers and policy makers across the HVAC industry.