Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)
- Volume 5 Issue 1
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- Pages.7-11
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- 2009
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- 2799-4783(pISSN)
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- 2799-4805(eISSN)
A Study on the Operating Performance of a Cascade Heat Pump
캐스케이드 열펌프시스템의 운전 특성에 관한 연구
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Chang, Ki-Chang
(Geothermal Research Group, Korea Institute of Energy Research(KIER)) ;
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Baik, Young-Jin
(Geothermal Research Group, Korea Institute of Energy Research(KIER)) ;
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Ra, Ho-Sang
(Geothermal Research Group, Korea Institute of Energy Research(KIER)) ;
- Kim, Ji-Young (Department of Mechanical Engineering, Korea University) ;
- Lee, Jea-Hun (Department of Mechanical Engineering, Hanbat University)
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장기창
(한국에너지기술연구원(KIER)) ;
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백영진
(한국에너지기술연구원(KIER)) ;
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나호상
(한국에너지기술연구원(KIER)) ;
- 김지영 (고려대학교 기계공학과 대학원) ;
- 이재훈 (한밭대학교 기계공학과 대학원)
- Published : 2009.06.01
Abstract
The purpose of this study is to investigate the performance of a water heat source cascade heat pump system R717(Ammonia) is used for a low-stage working fluid while R134a is for a high-stage. In order to gain a high temperature supply water in winter season, the system is designed to perform a cascade cycle. In this study, two experiments were carried out. One is a system starting test from the low load temperature of