FACADE INTEGRATION OF SOLAR THERMAL COLLECTORS: A BREAKTHROUGH
One main barrier to the acceptability of fa(c)ade use of solar thermal collectors is their black appearance and the visibility of piping or absorber irregularities through the glazing. To facilitate fa(c)ade integration, a project was set up to develop selective filters reflecting only a small part of the solar spectrum in the visible range while letting the rest of the radiation heat the absorber. These filters were successfully produced and, combined with a diffusing glass treatment, have achieved the desired masking effect with minor impact on the collector efficiency (less than 10％). Glasses of various colours combined with several diffusing finishing (acid etching, structured glass etc? can be produced that are able to hide the absorber. Such glazings will allow the use of the same product both in front of fa(c)ade areas equipped with solar absorbers (as collector external glass) and in front of the non exposed areas (as fa(c)ade cladding), opening the way to a broad variety of active fa(c)ade designs. The active elements can then be positioned at will on the exposed areas, and their quantity determined only by thermal needs. By freeing the dimension of the fa(c)ade area that can be clad with this glazing from the thermally needed surface for collectors, a major step to help architects use solar thermal on facades has been taken.
Christian Roecker MariaCristina Munari-Probst Estelle de Chambrier Andreas Schueler Jean-Louis Scartezzini
Ecole Polytechnique Fédérale de Lausanne (EPFL) Laboratoire dEnergie Solaire et de Physique du Batiment Bat.LE, Station 18 CH-1015 Lausanne, Switzerland
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）