화학공학소재연구정보센터
Energy and Buildings, Vol.75, 176-180, 2014
Performance and building integration of all-ceramic solar collectors
In this paper, a type of all-ceramic solar collector from cheap materials is introduced. The all-ceramic solar collectors are made from ordinary ceramic and vanadium-titanium black ceramic. The ordinary ceramic raw materials mean mainly porcelain clay, quartz, feldspar, etc. The material of the solar absorber coating is vanadium-titanium black ceramic, which has a stable value of solar absorptance in the range of 0.93-0.97. Some characteristics and performance analysis of all-ceramic solar system are given. For the purpose of comparison, three solar systems consisting of all-glass evacuated tube solar collectors, metal-flat-plat solar collectors, and all-ceramic solar collectors were built. The all-ceramic solar system has the highest thermal efficiency. The heating-rate trends of three solar systems are different in the test period. The all-ceramic solar system can integrate well with building roof. The appropriate approach for the integration between the all-ceramic solar system and building roof is given. When using the integrated approach, the pitched building roof only need basic concrete structural layer, insulating layer, waterproof layer, and leveling course. (C) 2014 Elsevier B.V. All rights reserved.