Application of low global warming potential refrigerants for room air conditioner.

Number: pap. NS25

Author(s) : FUJITAKA A., SHIMIZU T., SATO S., et al.

Summary

An application of the low Global Warming Potential (GWP) refrigerants, HFO-1234yf (2,3,3,3-tetrafluoropropene) and R32/HFO-1234yf mixtures, for the room air conditioner was performed. Acid number of polyolester refrigeration oil for R410A has greatly increased after aging with HFO-1234yf containing air. HFO-1234yf breakdown products such as hydrogen fluoride may cause this phenomenon. However, other materials compatibility has been almost identical to R410A. Using R410A room air conditioner, the drop-in tests of HFO-1234yf and R32/HFO-1234yf mixtures were carried out. The performance of HFO-1234yf is significantly lower than that of R410A as a result of the pressure drop increasing. The performance of R32/HFO-1234yf improves as the R32 concentration becomes richer. The COPs of R32/HFO-1234yf (50/50 wt%) under cooling and heating conditions are 95 and 94% of those of R410A respectively.

Available documents

Format PDF

Pages: 8 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

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

Details

  • Original title: Application of low global warming potential refrigerants for room air conditioner.
  • Record ID : 30000589
  • Languages: English
  • Source: Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Publication date: 2010/02/17

Links


See other articles from the proceedings (75)
See the conference proceedings