R744와 R22를 적용한 태양열 하이브리드 열펌프의 성능 시뮬레이션 비교 분석
Simulation Analysis on Performance Comparison between R744 and R22 Solar Hybrid Heat Pump
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Simulation study of a solar hybrid heat pump using R744 and R22 for residential applications was carried out according to heat pump operating temperature, outdoor temperature and solar radiation. As a result, when the heat pump operating temperature increases from 40℃ to 48℃, the COP of a R744 and R22 heat pump system decrease from 2.15 to 1.7 and from 3.09 to 2.69, respectively. Besides, as the outdoor temperature rises from 3℃ to $11^{\circ}C$, the COP of R744 and R22 heat pump system increase from 1.73 to 2.12 and from 2.73 to 3.02. When the solar radiation increases from 10 to 20 $MJ/m^2$, the collector operating time and collector efficiency of R744 heat pump increase 10.3 times and 50.7%, respectively. The performance of R744 solar hybird heat pump is more sensitive to operation condition compared to that of R22. Besides, the solar heating system is more effective to the R744 heat pump system.
Abstract
Simulation study of a solar hybrid heat pump using R744 and R22 for residential applications was carried out according to heat pump operating temperature, outdoor temperature and solar radiation. As a result, when the heat pump operating temperature increases from 40℃ to 48℃, the COP of a R744 and R22 heat pump system decrease from 2.15 to 1.7 and from 3.09 to 2.69, respectively. Besides, as the outdoor temperature rises from 3℃ to $11^{\circ}C$, the COP of R744 and R22 heat pump system increase from 1.73 to 2.12 and from 2.73 to 3.02. When the solar radiation increases from 10 to 20 $MJ/m^2$, the collector operating time and collector efficiency of R744 heat pump increase 10.3 times and 50.7%, respectively. The performance of R744 solar hybird heat pump is more sensitive to operation condition compared to that of R22. Besides, the solar heating system is more effective to the R744 heat pump system.
참고문헌 (17)
- 박윤철, "태양열이용 하이브리드 열펌프시스템의 성능특성에 관한 연구", 한국태양에너지학회 논문집, 27(1), pp.47~54 (2007), 한국태양에너지학회
- 김용기, "태양열원 열펌프 이용 난방시스템의 적용 및 설계에 관한 연구", 한국태양에너지학회 2000 추계학술발표대회 논문집, pp.68~773 (2000)
- 김원석, "주거용 태양열 하이브리드 이산화탄소 열펌프 시스템의 성능특성에 관한 해석적 연구", 설비공학 논문집, 23(10), pp.678~686 (2011), 대한설비공학회
- Klein, S,A., "The Relationship of Optimum Heat Exchanger Allocation and Minimum Entropy Generation for Refrigeration Cycle", Proceedings of the ASME Advanced Energy System Division, pp.87~94
- Park, C. S., "Mass flow characteristics and empirical modeling of R22 and R410A flowing through electronic expansion valve", Journal of International Journal of Refrigeration, 30(8), pp.1401~1407
- Sanchez, D., "Influence of the superheat associated to a semihermetic compressor of a transcritical CO2 refrigeration plant", Journal of Applied Thermal Engineering, 30, pp.302~309 (2010)
- Gnielinski, V., "New equations for heat and mass transfer in turbulent pipe and channel flow", International Chemical Engineering, 16, pp.59~68
- Churchill, SW., "Friction-factor equation span all fluid flow regimes", Chemical Engineering, 7, pp.91~92 (1977)
- Dittus, F. W., "Heat transfer in automobile radiators of the tubular type", University of california publications of engineering, 2, pp.443~461 (1930)
- Incropera, F. P., "Introduction to Heat Transfer" (1996), John Wiley & Sons
- 윤석호, "임계점 부근에서 이산화탄소의 증발열전달 및 압력강하 특성 연구와 상관식 개발", 설비공학 논문집, 16(6), pp.530~537 (2004), 대한설비공학회
- Tong, L.S., "Boiling, Heat Transfer and Two-Phase Flow", John Wiley & Sons
- Hiller, Carl, "Improving Heat Pump Performance Via Compressor Capacity Contorl: Analysis and Test", 박사, pp.1976
- Mcquiston, Faye, "Heating, Ventilating, and Air conditioning Analysis and Design", pp.636~ (1994), John Wiley&Sons, Inc
- Rich, D.G., "The effect of fjn spacing on the heat transfer and friction performance of multi-row, smooth plate fin-and-tube heat exchangers", ASHRAE Transactions, 79(2) (1973)
- Thome, J. R., "Condensation in horizontal tubes, Part 2: new heat transfer model based on flow regimes", International Journal of Heat and Mass Transfer, 46, pp.3365~3387 (2003)
- Wang C.C, "A comparison of the airside performance of the fin-and-tube heat exchangers in wet conditions; with and without hydrophilic coating", Applied thermal engineering, 22, pp.267~278 (2002)