ShareApplication 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.
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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
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Indexing
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Themes:
Other air-conditioning equipment;
Thermodynamic measurements;
HFCs;
Blends - Keywords: R410A; R1234yf; Air conditioner; Drop-in; R32; Performance; Mixture; GWP; Refrigerant; Air conditioning
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- Date : 2010/02/17
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- Source: Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
- Formats : PDF
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- Author(s) : LECK T., HUGHES J., NAICKER P., et al.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
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- Author(s) : HARA H., OONO M., IWATA I.
- Date : 2010/02/17
- Languages : English
- Source: Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
- Formats : PDF
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Performance of an R-410A room air conditioner m...
- Author(s) : JANICKI C., HERMANN K., NEUMAN J., et al.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
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- Author(s) : KUJAK S., SCHULTZ K.
- Date : 2015/08/16
- Languages : English
- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
- Formats : PDF
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