An Experimental Study for Apply Solar System on Thermal Performance of Heat Pipe Type Solar Collector using a Glass Concentric Evacuated Tube in a Summer

하절기 태양열 시스템 적용을 위한 이중진공관 히트파이프형 집열기 열성능의 실험적 연구

This paper has been carried out to find the thermal efficiency and operating characteristics of heatpipe type solar collector using a glass concentric evacuated tube(CETC) during summer. In an experiment the flow rate of water in collector are 1.5l/min. Collector efficiency is $50{\sim}60%$ during time. The solar radiation appeared in a clear day is efficiency high. Efficiency curve fitted first order polynomial show that $F_{R}$$({\tau}{\alpha})$ and $F_{R}U_{L}$=1.316 is 0.601 and 1.316 respectively.