THERMAL LOSSES IN SEALED, GAS-FILLED FLAT PLATE SOLAR COLLECTORS

摘要：

A sealed space between absorber and cover glass makes it possible reducing the influence of humidity condensate and dust at the same time as the enclosed space can be filled with a suitable gas for lowering the losses. This paper is about the size of the losses in these collectors. A calculating model of a gas-filled flat plate solar collector was built in Matlab with standard heat transfer formulas. It showed that the total loss can be reduced up to 20％ when changing to an inert gas. It is also possible using a much shorter distance and still achieve low losses at the same time as the mechanical stresses in the material is reduced.

作者: Johan Vestlund Jan-Olof Dalenb(a)ck Mats R(o)nnelid

作者单位: Solar Energy Research Center, SERC H(o)gskolan Dalarna 781 88 Borl(a)nge, Sweden Chalmers University of Technology Buidling Services Engineering 412 96 G(o)teborg, Sweden

会议类型: 国际会议

会议名称: 2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-09-18（万方平台首次上网日期，不代表论文的发表时间）