Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Evaluation of the operating reliability on the concurrent heating-cooling system air conditioner for different refrigerant flow rates with high-head and long-line conditions

동시냉난방 시스템 에어컨의 냉매량 변화에 따른 고낙차 장배관 운전 신뢰성 평가

  • Lee, Seung-Chan (Graduate School, Sungkyunkwan University) ;
  • Kim, Tae-An (Graduate School, Sungkyunkwan University) ;
  • Tae, Sang-Jin (Digital Appliance Division, System Air Conditioning, Samsung Electronics Co., Ltd.) ;
  • Jung, Gyoo-Ha (Digital Appliance Division, System Air Conditioning, Samsung Electronics Co., Ltd.) ;
  • Moon, Je-Myung (Digital Appliance Division, System Air Conditioning, Samsung Electronics Co., Ltd.) ;
  • Kim, Youn-Jea (School of Mechanical Engineering, Sungkyunkwan University)
  • 이승찬 (성균관대학교 대학원) ;
  • 김태안 (성균관대학교 대학원) ;
  • 태상진 (삼성전자 생활가전사업부 시스템) ;
  • 정규하 (삼성전자 생활가전사업부 시스템) ;
  • 문제명 (삼성전자 생활가전사업부 시스템) ;
  • 김윤제 (성균관대학교 기계공학부)
  • Published : 2008.11.21
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Abstract

The heating and cooling performances of system multi-air conditioner for various refrigerant flow rates with high-head and long-line conditions are experimentally investigated. The maximum head and tube length were 110 m and 1000 m, and the two different adjustments of refrigerant flow rates were +20 % and -20 %, respectively. The experimental system was composed of 4 outdoor units with module systems, and 13 indoor units which were joined with the mode change unit by single-tube circuit. Field tests without indoor and outdoor temperature control were performed in a general office building with two different refrigerant flow rates. Especially, the oil level in the compressor was normally maintained at the safety zone. Experimental results were prepared on the p-h diagram.

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