Abstract
본 연구에서는 인버터 압축기를 적용한 3실형 멀티-열펌프 시스템의 냉방운전 시 시스템의 성능특성을 조사하였다. 시스템의 운전특성은 항온항습 기능을 가진 공기엔탈피방식의 칼로리미터를 이용하여 측정되었으며, 냉방표준 및 냉방저온 온도조건에서 실내기 조합에 따른 실험이 수행되었다. 3실형 열펌프의 실내기 조합운전에 따른 냉방 표준운전 및 냉방저온운전 시의 냉방능력, COP, P-h선도로부터, 3실형 열펌프의 운전특성과 냉방사이클의 거동을 이해하였다. 열펌프의 운전부하와 성능은 실내기 조합에 의존하므로 시스템의 능력과 사이클의 거동은 다르게 관찰되었다. 과냉도 증가와 압축일의 감소로 표준조건보다 저온조건에서 냉방능력과 COP가 더 높았다. 또한 P-h 선도를 이용하여 사이클의 운전특성도 분석하였다. In order to investigate the cooling capacity of multi-heat pump applying an inverter compressor, the experiment on the cooling performance characteristics of heat pump with 3 indoor units was performed under the cooling standard and cooling low-temperature conditions. The system data were measured by the psychrometric calorimeter. The operation characteristics and the behavior of the cooling cycle of the heat pump with 3 indoor units were understood from the cooling capacity, COP, and P-h diagram by indoor-unit combination. The operating load and performance of the multi-heat pump depends on the indoor-unit combination. The cooling capacity and COP of the low temperature condition were larger than those of the standard one. Also the cycle was analyzed by using P-h diagram.
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