Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지
DOI QR코드

DOI QR Code

Heating Performance Characteristics of a Heat Pump with a Variable Speed Injection Scroll Compressor

인젝션형 가변속 스크롤 압축기를 적용한 히트펌프의 난방성능 특성에 관한 연구

  • Ko, Suk-Bin (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Heo, Jae-Hyeok (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Cho, Il-Yong (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University)
  • 고석빈 (고려대학교 기계공학과 대학원) ;
  • 허재혁 (고려대학교 기계공학과 대학원) ;
  • 조일용 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학부)
  • Received : 2011.11.24
  • Published : 2012.05.10
Download PDF
⟨ Previous Next ⟩

Abstract

Vapor injection technique has been applied to prevent performance degrdation of a heat pump at low ambient temperatures. In this study, the heating performance of a heat pump with a variable speed injection scroll compressor using R-410A was investigated by applying sub-cooler vapor injection(SCVI) and flash tank vapor injection(FTVI). The heating performance of the heat pump was measured by varying compressor frequency and outdoor temperature. The heating capacity of the FTVI system was 8~10% higher than that of the SCVI system at all operating conditions. On the other hand, the heating performance improvement with the increase in the compressor frequency was more prominent in the SCVI system than in the FTVI system.

Keywords

References

  1. Sami, S. M. and Tulej, P. J., 1995, A new design for an air-source heat pump using a ternary mixture for cold climates, Heat Recovery and CHP, Vol. 15, No. 6, pp. 521-529. https://doi.org/10.1016/0890-4332(95)90062-4
  2. Heo, J., Jeong, M. W., and Kim, Y., 2010, Effects of flash tank vapor injection on the heating performance of an inverter-driven heat pump for cold regions, International Journal of Refrigeration, Vol. 33, pp. 848-855. https://doi.org/10.1016/j.ijrefrig.2009.12.021
  3. Wang, X., Hwang, Y., and Radermacher, R., 2009, Two-stage heat pump with vapor-injected scroll compressor using R410A as a refrigerant, International Journal of Refrigeration, Vol. 32, pp. 1442-1451. https://doi.org/10.1016/j.ijrefrig.2009.03.004
  4. Xu, X., Hwang, Y., and Radermacher, R., 2011, Refrigerant injection for heat pumping/air conditioning systems：Literature review and challenges discussions, International Journal of Refrigeration, Vol. 34, pp. 402-415. https://doi.org/10.1016/j.ijrefrig.2010.09.015
  5. Fernandez, N., Hwang, Y., and Radermacher, R., 2010, Comparison of $CO_2$ heat pump water heater performance with baseline cycle and two high COP cycles, International Journal of Refrige-ration, Vol. 33, pp. 635-644. https://doi.org/10.1016/j.ijrefrig.2009.12.008
  6. Kobayashi, M., Kuwabara, O., Hoshino, S., Koyama, K., Ishikawa, M., and Yamada, M., 2008, $CO_2$ heat pump heating and water heater system for cold area, 9th International IEA Heat Pump Conference.
  7. Heo, J., Jeong, M. W., Jeon, J., and Kim, Y., 2008, Effects of gas injection on the heating performance of a two-stage heat pump using a twin rotary compressor with refrigerant charge amount, International Journal of Air-Conditioning and Refrigeration, Vol. 16, No. 3, pp. 77-82.
  8. Nguyen, M., Hewitt, N., and Huang, M., 2007, Performance evaluation of an air source heat pump using economized vapor injection compressor and flash tank coupled with capillary tubes, Proceedings of International Congress of Refrigeration, Beijing, China, ICR07-E2-1110.
  9. Ma, G. and Zhao, H., 2008, Experimental study of a heat pump system with flash-tank coupled with scroll compressor, Energy and Buildings, Vol. 40, pp. 697-701. https://doi.org/10.1016/j.enbuild.2007.05.003
  10. Heo, J., Jeong, M. W., Baek, C., and Kim, Y., 2011, Comparison of the heating performance of air-source heat pumps using various types of refrigerant injection, International Journal of Refrigeration, Vol. 34, pp. 444-453. https://doi.org/10.1016/j.ijrefrig.2010.10.003
  11. Cho, H. and Kim, Y., 2000, Experimental study on the performance characteristics of an injection type scroll compressor, Proceedings of KSME Spring Annual Conference, pp. 193-198.
  12. Jung, M. W., Heo, J., Jung, H, W., and Kim Y., 2009, The cooling performance enhancement of a variable speed heat pump using gas injection technique, Korean Journal of Air-conditioning and Refrigeration, Vol. 21, No. 8, pp. 425-432.