생물환경조절학회지 (Journal of Bio-Environment Control)
- 제5권1호
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- Pages.57-64
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- 1996
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- 1229-4675(pISSN)
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- 2765-3641(eISSN)
온실 난방을 위한 모세관형 태양열 집열기의 성능에 미치는 유량의 효과에 관한 연구
The Effects of Water Flow Rates on the Performance of a Capillary Tube Solar Collector for Greenhouse Heating
초록
To use effectively the solar energy in greenhouse heating, a high performance solar collector should be developed. And then the size of the solar collector and thermal storage tank should be determined through the calculation of heating load. The solar collector must be set in the optimum tilt angle and direction to take daily solar radiation maximally, and the flow rate of heat transfer fluid through the solar collector should be kept in the optimum range. In this research, the performance tests of a capillary tube solar collector were performed to determine the optimum water flow rate and the results summarized as follows. 1. The regressive equations for efficiency estimations of the capillary tube solar collector in the open loop were modeled in the water flow rate of 700-l,000