期刊
APPLIED ENERGY
卷 194, 期 -, 页码 148-160出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2017.03.019
关键词
Building integrated photovoltaics; Semi-transparent photovoltaics; PV double skin fa ade; PV insulating glass unit; Building energy efficiency
资金
- National Natural Science Foundation of China [51608185]
- Hong Kong Housing Authority Research Fund [K-ZJHE]
- Fundamental Research Funds for the Central Universities (Hunan University) [531107040899]
- China National Key R&D Program Solutions to heating and cooling of buildings in the Yangtze river region [2016YFC0700305]
- Shenzhen Peacock Plan
Building-integrated photovoltaic (BIPV) windows provide the benefits of generating electricity, reducing building cooling and heating energy consumption, and efficiently utilizing daylight simultaneously. In this paper, the overall energy performance of a PV double skin facade (PV-DSF) and a PV insulating glass unit (PV-IGU) is studied through comparative experiments on a test rig in Hong Kong. The PV-DSF means ventilated PV-DSF by default, if not special mentioned. It is found that the average solar heat gain coefficients (SHGCs) of the PV-DSF and the PV-IGU are 0.152 and 0.238, while the U-values are 2.535 W/m(2) K and 2.281 W/m(2) K. The results indicate that the PV-DSF has better performance than PV-IGU in reducing solar heat gains, while it has worse performance regarding thermal insulation. With a lower PV module temperature, the energy conversion efficiency of PV-DSF is 1.8% better than PV-IGU. Simulation models for the PV-DSF and the PV-IGU are developed and validated against experimental data. Using the validated models, the overall energy performances of PV-DSF and PV-IGU in five different climates of China are investigated. The results show that the average energy saving potential of the PV-DSF and the PV-IGU are 28.4% and 30%, respectively, compared to the commonly used insulating glass window in five different climates. On average, the performance of PV-IGU was 2% better performance than the ventilated PV-DSF in the five representative cities. However, if an appropriate ventilation control scheme was adopted, PV-DSF can have a much better performance than the PV-IGU. The models developed in this study can be used for selecting suitable PV windows in the design process, and the results achieved can be used as a guideline for utilizing PV windows in different climates. (C) 2017 Elsevier Ltd. All rights reserved.
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