A NEW TRANSPARENTLY INSULATED, BIFACIALLY IRRADIATED SOLAR FLAT-PLATE COLLECTOR

被引：19

作者：

GOETZBERGER, A

DENGLER, J

ROMMEL, M

GOTTSCHE, J

WITTWER, V

机构：

[1] Fraunhofer Institute for Solar Energy Systems, D-7800 Freiburg

来源：

SOLAR ENERGY | 1992年 / 49卷 / 05期

关键词：

D O I：

10.1016/0038-092X(92)90112-N

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A new type of transparently insulated flat-plate collector was developed. It reaches higher efficiencies at low irradiation values or high operating temperatures than any other collector type known. Both sides of its absorber are covered with transparent insulation material and both sides are irradiated. Thus, the heat losses of the collector related to the total absorber area are distinctly reduced. An optical efficiency of eta-0 = 0.72 and a temperature dependent U-value of U(DELTA-T) = (0.95 + 0.0076 DELTA-T K -1) W m-2 K-1 were measured with an outdoor test facility. The bifacial-absorber collector is considered to be the best option for the DHW system of the energetically self-sufficient solar house in Freiburg because of its outstanding winter performance.

引用

页码：403 / 411

页数：9