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Proceedings of ISES World Congress 2007 (Vol. I – Vol. V)
One main barrier to the acceptability of façade use of solar thermal collectors is their black appearance and the visibility of piping or absorber irregularities through the glazing. To facilitate façade 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, havedoi:10.1007/978-3-540-75997-3_57 fatcat:svoiyewwn5abncbvjchubaqara