냉방표준 운전조건에서 멀티 히트펌프의 동시운전 동적특성에 대한 실험연구
Experimental Study on Dynamic Characteristics of Multi-H/P Under Cooling Standard Operating Condition
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In order to experimentally investigate the operation characteristics of the multi-heat pump with 3 indoor units, the dynamic characteristics of the cooling cycle is studied using the psychrometric multi-calorimeter. The compressor of the heat pump is the scroll inverter type, and since 3 indoor units operate cooling at the same time, it is operated at 100% full load. In particular, 3 types of indoor unit temperatures (20, 24, 26°C) are selected to understand the operation process of the multi-heat pump by the setting temperature. From this experiment, the compressor controls the EEV opening for each indoor unit while varying the frequency according to the initial start, transient, and steady operation. In addition, as the setting temperature increases in the steady range, the frequency of the compressor and the average opening degree of the EEV decrease.
Abstract
In order to experimentally investigate the operation characteristics of the multi-heat pump with 3 indoor units, the dynamic characteristics of the cooling cycle is studied using the psychrometric multi-calorimeter. The compressor of the heat pump is the scroll inverter type, and since 3 indoor units operate cooling at the same time, it is operated at 100% full load. In particular, 3 types of indoor unit temperatures (20, 24, 26°C) are selected to understand the operation process of the multi-heat pump by the setting temperature. From this experiment, the compressor controls the EEV opening for each indoor unit while varying the frequency according to the initial start, transient, and steady operation. In addition, as the setting temperature increases in the steady range, the frequency of the compressor and the average opening degree of the EEV decrease.
참고문헌 (10)
- Y. H. Jun, "Cooling and heating characteristics of system A", C using the digital scroll compressor, 2003, 1536~1541
- T. H. Kim, "Multi air conditioning cycle simulation development for performance and reliability prediction", Proceeding of KSME Spring Conference, pp.27~30 (2012)
- T. H. Kim, "Developed simulation tool of system multi-air conditioner with module outdoor units and high-head conditions", Proceedings of the SAREK Summer Conference, pp.36~39 (2014)
- C. J. Um, "The capacity and energy efficiency simulation of system air conditioner under the load variation", Proceedings of the SAREK Summer Conference, pp.265~268 (2015)
- C. J. Maeng, "Experimental study on the performance characteristics of mobile air-conditioning system with multi evaporator", Proceeding of KSAE Spring Conference, pp.334~339 (2015)
- C. Liu, "Experimental study on the CO2 flow characteristics through electronic expansion valves in heat pump", International Journal Refrigeration, 69, pp.106~113 (2016)
- 양동학, "3실 에어컨 냉방 및 초기기동 특성에 대한 실험적 연구", 한국기계기술학회지, 20(4), pp.452~457 (2018), 한국기계기술학회[DOI]
- 권영철, "히트펌프식 건조기의 성능특성에 대한 실험연구", 한국기계기술학회지, 23(6), pp.997~1003 (2021), 한국기계기술학회[DOI]
- "KS C 9306, Air-Conditioner", Korean Agency for Technology and Standard, ~ (2017)
- ASHRAE, "Method of testing for seasonal efficiency of unitary air conditioners and heat pumps", ANSI, 1995