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김욱중(Ook Joong Kim),최영호(Young-Ho Choi),강신일(Sin-Il Kang),황대련(Dae Ryeon Hawng) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The performance test of components for CO2 heat pump system has been conducted. An electronic expansion valve(EEV) and a 4-way valve which developed by domestic companies are installed in experimental heat pump system. Almost same mass flow characteristics by comparing with the previous results are obtained when the 4-way is used. Therefore, developed components can be operated in real heat pump system. But modification of suggested correlation for predicting mass flow through EEV is necessary to widen the application range.