대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)

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

난방모드 시 $CO_2$ 지열히트펌프의 내부열교환기에 대한 운전특성

Operating Characteristics of Internal Heat Exchanger for $CO_2$ Geothermal Heat Pump in the Heating Mode

  • 김재덕 (한국생산기술연구원, 에너지설비기술지원센터) ;
  • 이상재 (한국생산기술연구원, 에너지설비기술지원센터) ;
  • 김선창 (한국생산기술연구원, 에너지설비기술지원센터) ;
  • 김영률 (한국생산기술연구원, 에너지설비기술지원센터)
  • 발행 : 2009.06.25
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초록

This paper presents operating characteristics of internal heat exchanger(IHX) for $CO_2$ geothermal heat pump in the heating mode. Mass flow rate of $CO_2$, inlet temperatures of $CO_2$ at high and low pressure side were selected as main effect factors by using fractional factorial DOE(Design of Experiments). And RSM(Response Surface Method) was used in optimization phase. The results show that heat transfer rate of IHX increases when either inlet temperature of low pressure side decreases or inlet temperature of high pressure side increases. Effectiveness of IHX increases with increasing of inlet temperature of either high pressure side or low pressure side. Finally, performance contour map was provided over the operation ranges of the main design factors.

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