Coupled thermal-electrical-optical analysis of a photovoltaic-blind integrated glazing façade
| Autor: | Xiaosong Su, Zhongbing Liu, Yongqiang Luo, Ling Zhang, Yongwei Luo, Jinbu Lian |
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| Rok vydání: | 2018 |
| Předmět: |
Computer science
020209 energy Mechanical Engineering Airflow Photovoltaic system Radiosity (computer graphics) 02 engineering and technology Building and Construction 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Power (physics) Glazing General Energy 0202 electrical engineering electronic engineering information engineering Double-skin facade Facade Daylighting Simulation 0105 earth and related environmental sciences |
| Zdroj: | Applied Energy. 228:1870-1886 |
| ISSN: | 0306-2619 |
| DOI: | 10.1016/j.apenergy.2018.07.052 |
| Popis: | PV-blind embedded double skin facade (PVB-DSF) is a promising facade system for building energy efficiency. This paper developed a coupled thermal-electrical-optical model for analyzing, evaluating and optimizing the system performance. The ray-tracing method, radiosity method and net radiation method are used for the optical model. The single diode RP-model and Lambert-W function are adopted in the electrical model. The airflow network and energy balance equations are coupled for system thermal model. A complex simulation algorithm is proposed for the thermal-electrical-optical model solution. A series of experiments were implemented for model verification. The comparisons between simulation and measurement data show a good agreement. Specifically, the relative mean square error (RMSE) for simulation result in optical model is 2.02 W/m2 in sunny day and 5.21 W/m2 in cloudy day; 2.24 V for output voltage and 1.47 W for output power; 0.67 °C, 0.41 °C and 2.17 °C for external, internal glass pane and PV-blind. On top of that, the model is used as a tool for understanding the system performance under different configurations and position of PV-blind, solar cell efficiency and airflow rate. PV-blind angle and width under different spacing settings are optimized for balancing system energy performance and indoor daylighting comfort level. This study offers a useful simulation tool and a deeper understanding of PVB-DSF, which is beneficial for the design, control, optimization and evaluation of this effective glazing facade and can contribute to building energy efficiency. |
| Databáze: | OpenAIRE |
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