냉매 가열식 대용량 VRF 히트펌프 사이클 설계를 통한 극한랭지 난방 성능 평가

다국어 초록 (Multilingual Abstract)

Heat pump systems for commercial building with variable refrigerant flow(VRF) are expanding a market due to high energy efficiency, lower maintenance cost and easy installation comparing with the conventional heat pump with the constant refrigerant flow. In general, heat pump systems degrade the energy efficiency in the extremely low temperature regions. In this study, VRF heat pump system with refrigerant heating is experimentally investigated to overcome the low heating performance in the extremely low temperature regions. VRF heat pump system with refrigerant heating is found out the sufficient heating performance in the -25 degree temperature condition comparing with the conventional heat pump system and is obtained more than 2,500 ㎪ high pressure in the evaporator at low temperature.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 실험장치 및 방법
• 3. 실험결과 및 고찰
• 4. 결론
• 참고문헌

참고문헌 (Reference)

1 김상혁, "냉매가열식 열펌프시스템의 성능 특성에 관한 실험적 연구" 대한설비공학회 18 (18): 707-713, 2006

2 박윤철, "구동장치 및 열교환기 변경에 따른 냉매가열식열펌프의 성능특성" 대한설비공학회 20 (20): 49-56, 2008

3 Yoshihazu Nishihara, "The Room Air-conditioner of the nonstop heating with a heater type refrigerative heater" 82 (82): 8-13, 2007

4 KATS, "KS C 9306 Air Conditioner Standard"

5 Lubliner, M, "Heating with residential heat pumps" 47 (47): 36-40, 2005

6 Byun, J. S, "Frost retardation of an air-source heat pump by the hot gas bypass method" ELSEVIER SCI LTD 31 : 328-334, 2008

7 Ma Guoyuan, "Experimental investigation of air-source heat pump for cold regions" 26 : 12-18, 2003

8 Yamakasi, K, "Development of burner for room air conditioner" 35 (35): 96-99, 1998