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http://hdl.handle.net/123456789/23199
Title: | Performance analysis of single-stage air source heat pump utilizing indirect vapor injection design |
Authors: | Jin-Chang Lai Win-Jet Luo Jyun-Yi Wu Dini Faridah Chia-Ming Lin Fikri Rahmat Fasya Muhammad Nuriyadi Wen-Bin Ng |
Keywords: | Air source heat pump flash tank indirect vapor injection coefficient of performance valve opening |
Issue Date: | Apr-2018 |
Publisher: | Sage |
Citation: | Lai, J. C., Luo, W. J., Wu, J. Y., Faridah, D., Lin, C. M., Fasya, F. R., … Ng, W. Bin. (2018). Performance analysis of single-stage air source heat pump utilizing indirect vapor injection design. Advances in Mechanical Engineering, 10(4), 1–12. |
Abstract: | This study investigated the performance of a single-stage scroll compressed air source heat pump coupled with a flash tank indirect vapor injection. In the refrigerant circulating piping of the heat pump, an indirect vapor injection piping connecting a flash tank at the refrigerant outlet of a condenser and the suction of a scroll compressor was designed. By the indirect refrigerant vapor injection from the flash tank, the saturation pressure and temperature of the refrigerant (R134a) in the evaporator can be raised and the sub-cooling of the refrigerant at the inlet of expansion valve can be enlarged as well. Thus, energy consumption of the compressor can be reduced and cooling capacity of the evaporator can be boosted. It was found that the suitable amount of indirect vapor refrigerant strongly depends on the operational environmental temperatures. By adjusting the suitable indirect vapor injection volume into the compressor, the performance of the heat pump was enhanced. In this study, a suitable indirect vapor injection volume was found and 5~15% performance increments can be obtained while the heat pump operated under ambient temperatures in a range from 5°C to 35°C. |
URI: | https://doi.org/10.1177/1687814018767487 https://journals.sagepub.com/doi/full/10.1177/1687814018767487 https://www.scopus.com/record/display.uri?eid=2-s2.0-85046639740&doi=10.1177%2f1687814018767487&origin=inward&txGid=1411e1011c2224e00cfb7029b9b01aff http://ir.unikl.edu.my/jspui/handle/123456789/23199 |
ISSN: | 1687-8132 |
Appears in Collections: | Journal Articles |
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Performance analysis of single-stage air source heat pump utilizing indirect vapor injection design.pdf | 591.54 kB | Adobe PDF | View/Open |
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