EXPERIMENTAL STUDY OF THE SOLAR DISTRICT HEATING SYSTEM

This study was carried out the performance analysis of district solar heating system which was installed in Bundang district heating area in the end of 2006. The flat plate and vacuum tube solar collector are combined in one system. So district heating water is heated first by flat plate solar collector and than by vacuum tube solar collector. This solar heating system has not a solar buffer tank and is operating with variable flow rate to obtain a setting temperature of 85~95 ℃ As a result, the daily solar thermal collection efficiency is about 30 to 40% for the plate type and 50 to 57% for the evacuated type solar collector. It varied especially depend on the weather condition like as solar radiation and ambient temperature. This variable flow rate system can be also reduced much pumping power more than 50%.
Nam-Choon Baek Shin U-Chul Lee Jin-Kook Yoon Eung-Sang Joo Mun-Chang Yoon Seok-Man
Korea Institute of Energy Research P.O.Box 103 Yusung Daejeon 305-343, Korea Daejeon University Dong-gu Daejeon 300-701, Korea Korea Institute of Energy Research Yusung Daejeon 305-343, Korea Korea District Heating Co.
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18(万方平台首次上网日期,不代表论文的发表时间)