Experiments and simulations on the energy performance of semi-transparent photovoltaic roof-integrated skylight glazing

IF 2.2 4区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Journal of Building Performance Simulation Pub Date : 2023-03-06 DOI:10.1080/19401493.2023.2185683

H. Ding, Guoqing Yu, L. Gu, Daina Luo

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Abstract

Photovoltaic (PV) cells integrated with building roof skylights not only generate electricity but also influence the thermal performance of the roof. In this paper, the thermal mathematical model of a semi-transparent photovoltaic insulating glass unit (STPV-IGU) integrated with the roof is established and validated by experiments. Case studies are conducted by using the roof-integrated STPV-IGU in Shanghai, and an equivalent electrical method is used to evaluate the energy performance of roof-integrated skylight STPV-IGU. The equivalent electricity of heat-gain entering the room through STPV-IGU and total equivalent electricity of roof-integrated STPV-IGU is 16.6 kWh/m2 and 12.1 kWh/m2 in summer, respectively. The equivalent electricity of heat-gain entering the room through STPV-IGU and total equivalent electricity of roof-integrated STPV-IGU are −16.3 kWh/m2 and −4.0 kWh/m2 in winter, respectively. Compared with traditional insulating glass unit, the STPV-IGU can significantly reduce the heat-gains through glazing in summer, but increase indoor heat-loss in winter.

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半透明光伏屋顶集成天窗玻璃节能性能的实验与模拟

与建筑屋顶天窗集成的光伏(PV)电池不仅可以发电，还可以影响屋顶的热性能。本文建立了与屋顶集成的半透明光伏中空玻璃单元(STPV-IGU)的热学数学模型，并通过实验进行了验证。以上海地区屋顶集成天窗STPV-IGU为例，采用等效电学方法对屋顶集成天窗STPV-IGU的能量性能进行了评价。夏季通过STPV-IGU进入室内的热增益等效电为16.6 kWh/m2，屋顶集成STPV-IGU的总等效电为12.1 kWh/m2。冬季通过STPV-IGU进入室内的热增益等效电为−16.3 kWh/m2，屋顶集成STPV-IGU的总等效电为−4.0 kWh/m2。与传统中空玻璃机组相比，STPV-IGU在夏季可显著降低玻璃热增益，但在冬季增加室内热损失。

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来源期刊

Journal of Building Performance Simulation CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

5.50

自引率

12.00%

发文量

审稿时长

12 months

期刊介绍： The Journal of Building Performance Simulation (JBPS) aims to make a substantial and lasting contribution to the international building community by supporting our authors and the high-quality, original research they submit. The journal also offers a forum for original review papers and researched case studies We welcome building performance simulation contributions that explore the following topics related to buildings and communities: -Theoretical aspects related to modelling and simulating the physical processes (thermal, air flow, moisture, lighting, acoustics). -Theoretical aspects related to modelling and simulating conventional and innovative energy conversion, storage, distribution, and control systems. -Theoretical aspects related to occupants, weather data, and other boundary conditions. -Methods and algorithms for optimizing the performance of buildings and communities and the systems which service them, including interaction with the electrical grid. -Uncertainty, sensitivity analysis, and calibration. -Methods and algorithms for validating models and for verifying solution methods and tools. -Development and validation of controls-oriented models that are appropriate for model predictive control and/or automated fault detection and diagnostics. -Techniques for educating and training tool users. -Software development techniques and interoperability issues with direct applicability to building performance simulation. -Case studies involving the application of building performance simulation for any stage of the design, construction, commissioning, operation, or management of buildings and the systems which service them are welcomed if they include validation or aspects that make a novel contribution to the knowledge base.