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US RESEARCH PROJECT ON MILDLY FLAMMABLE REFRIGERANTS

US RESEARCH PROJECT ON MILDLY FLAMMABLE REFRIGERANTS

02.07.2016

The US Air Conditioning, Heating and Refrigeration Institute (AHRI) flammable refrigerants subcommittee, ASHRAE, and the US Department of Energy (DOE) are supporting a collaborative effort to fund research about mildly flammable (ASHRAE class A2L) refrigerants, such as HFC-32, HFO-1234yf or HFO-1234ze(E), in order to allow their safe use.

The Committee has identified the following key research topics, and is developing research projects to address them.

  • Benchmarking risks from real-life leak and ignition testing
  • Assessing flammable refrigerants’ post-ignition risk
  • Determining set charge limits for various types of equipment employing flammable refrigerants
  • Investigating hot surface ignition temperature for A2L refrigerants
  • Creating a guide to A2L refrigerant handling and system installation and servicing
  • Detecting A2L refrigerant leaks in HVACR equipment

Ultimately, the intention is to update ASHRAE standards ANSI/ASHRAE Standard 15-2013, Safety Standard for Refrigeration Systems, and ANSI/ASHRAE Standard 34-2013, Designation and Safety Classification of Refrigerants, and fast-track these into the international codes.

 Source: RAC