Abstract
The energy performance of the semi-transparent PV (STPV) window was carried out in a hot-summer and cold-winter zone of China. Semi-transparent PV (STPV) windows generate electric, reduce the heating load and aim to utilize daylighting efficiently. In order to analyze the energy performance of semi-transparent windows, a comparison test rig was set up which includes two test rooms of the same size. One room was installed with the STPV window and the other with a conventional window. The lighting, thermal, and electrical performance of STPV window was tested and compared with those of conventional window in the same ambient environment. It was observed that the maximum power generation of the STPV (a-SiGe) window was 33.3 W/m2 on a typical sunny day. Compared with the conventional windows, the average solar heat gain (SHGC) and Uvalue of STPV windows were 0.15 and 1.6, respectively, which is better than those of conventional window. On a sunny day, the Useful Daylighting Illuminance (UDI) of the test room was up to 52.2% better than the UDI of the conventional room. The results could support the application of photovoltaic technology in buildings in Southwest China.
Highlights
The application of photovoltaic technology in buildings has huge potential in Southwest China.The climatic conditions of the area can be classified as a hot-summer and cold-winter zone.The windows can be considered as the least energy efficient parts of the buildings [1,2].The semi-transparent PV (STPV) window is a suitable alternate for this area
It was been found that the double-skin STPV window took into account both the thermal insulation and power generation performance compared to the single-layer window from a previous study
The results show that lighting-electric performance of the double-skin STPV window is impact by the visible transmittance
Summary
The application of photovoltaic technology in buildings has huge potential in Southwest China. It was been found that the double-skin STPV window took into account both the thermal insulation and power generation performance compared to the single-layer window from a previous study. It is suitable for use as the exterior window of buildings. Park et al [10] evaluated thermal-electric performance of the double-skin STPV window based on experimental test. This paper focuses on the analysis study of the electricity-thermal-lighting energy performance of the double-skin STPV window under the ambient environment of Chengdu, which is located on the longitude and latitude of 30.67 ◦ N using an experimental test. Three consecutive typical days were selected for analysis (from 13 February 2018 to 15 February 2018)
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