Interim and long-term low-GWP refrigerant solutions for air conditioning.

Number: pap. 2402

Author(s) : PHAM H., MONNIER K.


This paper will review the feasibility status from the recent global test research efforts for ‘interim’ near drop-in refrigerants with low global warming potential (GWP) with a focus on R410A replacement candidates for Unitary A/C & H/P. R32 and the HFO blends can offer near drop-in solutions with a reasonable balance of trade-offs among GWP, efficiency, A2L flammability, and system costs after appropriate building codes are available for commercialization. With the advent of further GWP phase down driven by the December 2015 Climate Change Agreement in Paris and pending changes to Montreal Protocol coupled with the imminent U.S. EPA SNAP de-listing and the U.S. DOE mandating new higher efficiency standards taking effect in 2020+, there is even more pressure for finding ‘long-term’ refrigerant solutions to meet the 15-20% GWP cap for 2030+ that can sustain efficiency, potentially reduce charge requirements and are cost effective. Theoretical and test results from various compressor and system tests with R32 and the HFO blends will be presented as ‘interim’ 2020+ solutions. Long-term 2030+ solutions and their tradeoffs are conceptualized and discussed for typical A/C residential and commercial applications from both GWP and LCCP standpoints including implications on HVAC system architecture.

Available documents

Format PDF

Pages: 10 p.


  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).


  • Original title: Interim and long-term low-GWP refrigerant solutions for air conditioning.
  • Record ID : 30018815
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11


See other articles from the proceedings (274)
See the conference proceedings