SharePerformance and reliability evaluation of a room air conditioner with low GWP refrigerant.
Number: pap. NS27
Author(s) : OKAZAKI T., MAEYAMA H., SAITO M., et al.
Summary
The system performance of a room air conditioner (RAC) with low GWP refrigerants was evaluated. The test units are drop-in unit and modified unit with a rotary compressor and alkyl benzene oil. As test results, the rated cooling capacity (4.0 kW) can not be obtained and APF ratio of HFO-1234yf is 80% to R410A in drop-in test. In modified unit test, the rated cooling capacity can be obtained and APF ratio of HFO-1234yf is 91% to R410A. In the test using the modified compressor, APF ratio of HFO-1234yf is 95% to R410A. From these results, it is predicted that the size of indoor unit is 12% and the size of outdoor unit is 54% larger than R410A unit to obtain the same performance as R410A. Also, the system performance of R32/HFO-1234yf mixtures was evaluated. In R32/HFO-1234yf mixtures APF tends to increase in the range of more than 30wt% of R32 and APF ratio to R410A becomes 93% on condition that R32 concentration is 60wt%. Furthermore, stability and sliding characteristics were evaluated and compared with R410A results. HFO-1234yf is less stable than R410A. Especially, the air accelerates its deterioration severely. On the other hand, HFO-1234yf has better sliding property than R410A.
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Details
- Original title: Performance and reliability evaluation of a room air conditioner with low GWP refrigerant.
- Record ID : 30000591
- 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 - Keywords: R410A; R1234yf; Air conditioner; Drop-in; R32; Performance; GWP; Refrigerant; Air conditioning
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