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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2004.10
- 수록면
- 799 - 804 (6page)
이용수
초록· 키워드
오류제보하기
Global warming due to the greenhouse effect is a major obstacle to achieving a sustainable society. The use of clean energy such as solar energy and wind power energy contribute to reduction in the greenhouse effect. Solar heat can be used to increase the thermal performance of a heat pump that adopts a collector as the evaporator.
Morrison reported the performance of a heat pump water heater with solar boosted evaporators, and simulated the performance of a heat pump with a water storage tank into which the condenser was integrated (Morrison, 1994). This system eliminates the parasitic energy of the pump used to transport heat from the heat pump condenser to the water storage tank (Morrison, 1999).
Ito et ale reported the performance of a heat pump using an aluminum roll-bond flat-plate collector (radiation solar collector), which was designed for a PV-thermal hybrid, as the evaporator (Ito, 2003). To eliminate the fall in performance of the heat pump at low solar radiation intensity, flat-plate collectors and air-refrigerant heat exchanger were used together (Ito, 2004). However, a fan was required for the air-refrigerant heat exchanger. In this research, a finned tube collector (convection solar collector) was used instead of an air-refrigerant heat exchanger. A finned tube collector does not need a fan, and absorbs solar heat as well as heat from the ambient air. This paper presents a comparison of experimental and analytical results of COP (coefficient of performance) for a heat pump using flat-plate collectors and a finned tube collector arranged in parallel. The degree of superheat at the exit of the evaporator of the heat pump may affect the performance of the heat pump. Therefore, the analysis of the heat pump performance considered the degree of superheat.
In the analysis, the influence of solar radiation intensity, wind velocity and ambient air temperature on the COP of the heat pump using the flat-plate collectors, a finned tube collector or combination of these two types of collectors arranged in parallel was investigated.
Morrison reported the performance of a heat pump water heater with solar boosted evaporators, and simulated the performance of a heat pump with a water storage tank into which the condenser was integrated (Morrison, 1994). This system eliminates the parasitic energy of the pump used to transport heat from the heat pump condenser to the water storage tank (Morrison, 1999).
Ito et ale reported the performance of a heat pump using an aluminum roll-bond flat-plate collector (radiation solar collector), which was designed for a PV-thermal hybrid, as the evaporator (Ito, 2003). To eliminate the fall in performance of the heat pump at low solar radiation intensity, flat-plate collectors and air-refrigerant heat exchanger were used together (Ito, 2004). However, a fan was required for the air-refrigerant heat exchanger. In this research, a finned tube collector (convection solar collector) was used instead of an air-refrigerant heat exchanger. A finned tube collector does not need a fan, and absorbs solar heat as well as heat from the ambient air. This paper presents a comparison of experimental and analytical results of COP (coefficient of performance) for a heat pump using flat-plate collectors and a finned tube collector arranged in parallel. The degree of superheat at the exit of the evaporator of the heat pump may affect the performance of the heat pump. Therefore, the analysis of the heat pump performance considered the degree of superheat.
In the analysis, the influence of solar radiation intensity, wind velocity and ambient air temperature on the COP of the heat pump using the flat-plate collectors, a finned tube collector or combination of these two types of collectors arranged in parallel was investigated.
목차
Abstract
1. Experiment Apparatus
2. Analysis
3. Results and Discussion
4. Conclusion
References
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