In this study, the flow mechanisms of HFC-134a and HFC-410A, including flow pattern, pressure distribution, temperature distribution, and mass flow rate inside short-tube orifice are presented and compared under the same working temperature. The test runs are performed at condenser temperature ranging between 35 and 45°C, evaporator temperature ranging between 2 and 12°C, and degree of subcooling ranging between 1 and 12 °C. The results show that the temperature distribution along the short-tube orifice obtained from HFC-410A is slightly higher than that obtained from HFC-134a. On the other hand, the pressure distribution between both refrigerants shows the large difference. It is also found that the tendency of mass flow rate obtained from HFC-134a almost coincides with those obtained HFC-410A as the operating conditions and short-tube orifice size are varied. However, the average mass flow rate of HFC-134a is slightly lower than that of HFC-410A.
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ASME/JSME 2011 8th Thermal Engineering Joint Conference
March 13–17, 2011
Honolulu, Hawaii, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-3892-1
PROCEEDINGS PAPER
Flashing Flow Mechanisms of HFC-134a and HFC-410a Through Short-Tube Orifices
Kitti Nilpueng,
Kitti Nilpueng
King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
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Somchai Wongwises
Somchai Wongwises
King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
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Kitti Nilpueng
King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
Somchai Wongwises
King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
Paper No:
AJTEC2011-44258, T10189; 6 pages
Published Online:
March 1, 2011
Citation
Nilpueng, K, & Wongwises, S. "Flashing Flow Mechanisms of HFC-134a and HFC-410a Through Short-Tube Orifices." Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASME/JSME 2011 8th Thermal Engineering Joint Conference. Honolulu, Hawaii, USA. March 13–17, 2011. T10189. ASME. https://doi.org/10.1115/AJTEC2011-44258
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