Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on The Operation Characteristics of 2-Stage Compression Heat Pump using Treated sewage

하수처리수를 이용한 2단 압축 열펌프 시스템의 운전특성에 관한 연구

  • Kim, Ji-Young (Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
  • Baik, Young-Jin (Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
  • Lee, Young-Soo (Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
  • Chang, Ki-Chang (Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
  • Ra, Ho-sang (Geothermal Energy Research Center, Korea Institute of Energy Research(KIER))
  • 김지영 (한국에너지기술연구원(KIER) 지열에너지연구센터) ;
  • 백영진 (한국에너지기술연구원(KIER) 지열에너지연구센터) ;
  • 이영수 (한국에너지기술연구원(KIER) 지열에너지연구센터) ;
  • 장기창 (한국에너지기술연구원(KIER) 지열에너지연구센터) ;
  • 나호상 (한국에너지기술연구원(KIER) 지열에너지연구센터)
  • Published : 2008.06.25
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Abstract

The treated sewage temperature is about $5^{\circ}C$ lower in summer and $5{\sim}10^{\circ}C$ higher in winter than ambient air. It can be used heat pump heat source and is good heat source on high performance of heat pump. In this study, to develop 100RT 2-stage compression heat pump use treated sewage water heat source and system applies to sewage disposal plant. Although heat pump is better performance, the large temperature difference between load and source makes the performance degradation of a heat pump. To solve this problem screw 2-stage compression is considered. The experiment was focused on the system operating performance variations over supply water and treated sewage water a temperature in the field. The results show that system of heating performance is higher then general heat pump and is enough to supply a hot water of $70^{\circ}C$.

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