Investigation of the role of cavity airflow on the performance of building-integrated photovoltaic panels

Mirzaei, Parham A.; Paterna, Enrico; Carmeliet, Jan

doi:10.1016/j.solener.2014.05.003

Cited by 36 publications

(11 citation statements)

References 24 publications

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“…A reliable correlation was developed 51 based on realistic conditions due to more complex flow around BIPV which was validated against the study performed. 52 Their study result showed that the airflow underneath the PV was twice as above the PV. Moreover, higher ventilation rates can be achieved through the stepped PV configuration.…”

Section: Current Research and Developmentmentioning

confidence: 98%

A review on the application of photovoltaic thermal systems for building façades

Riaz

Liang

Zhou

et al. 2019

Building Services Engineering Research and Technology

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The hybrid photovoltaic-thermal system has shown great progress. Electrical energy is produced from PV panels while thermal energy is produced via a working fluid carried through the panels. In this paper, the vertical PV/T is introduced using working fluids such as air and liquid, which serve to control the excess temperature of the PV panels as well as to collect heat to be made available as thermal energy. Installations of PV/T systems on building façades, as well as integration with other technologies such as heat pipe and heat pump are also discussed. Current studies of such building integration technologies are also explored, including the scale of application. This study aims to provide constructive information which can be used in future development of building facades for large-scale applications, to contribute to future sustainable development. Practical application: This study helps researchers and engineers who are considering photovoltaic thermal systems for building façades to have better understanding of its effect on electrical and thermal energy – for space heating, fresh air supply and hot water supply – using an active building envelope.

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Section: Current Research and Developmentmentioning

confidence: 98%

A review on the application of photovoltaic thermal systems for building façades

Riaz

Liang

Zhou

et al. 2019

Building Services Engineering Research and Technology

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“…The computational model used in this study was developed from a properly validated CFD model representing BIPV in a wind tunnel experiment (Mirzaei, Paterna & Carmeliet, 2014;Mirzaei & Carmeliet, 2015;Zhang, et al, 2017). The original model was enlarged to a full-scale BIPVs as shown in Figure 1.…”

Section: Microclimatic and Bipv Modelsmentioning

confidence: 99%

A new regression model to predict BIPV cell temperature for various climates using a high-resolution CFD microclimate model

Zhang

Gan

Mirzaei

2019

Advances in Building Energy Research

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Understanding of cell temperature of Building Integrated Photovoltaics (BIPV) is essential in the calculation of their conversion efficiency, durability and installation costs. Current PV cell temperature models mainly fail to provide accurate predictions in complex arrangement of BIPVs under various climatic conditions. To address this limitation, this paper proposes a new regression model for prediction of the BIPV cell temperature in various climates and design conditions, including the effects of relative PV position to the roof edge, solar radiation intensity, wind speed, and wind direction. To represent the large number of possible climatic and design scenarios, the advanced technique of Latin Hypercube Sampling was firstly utilized to reduce the number of investigated scenarios from 13,338 to 374. Then, a highresolution validated full-scale 3-dimensional Computational Fluid Dynamics (CFD) microclimate model was developed for modelling of BIPV's cell temperature, and then was applied to model all the reduced scenarios. A nonlinear multivariable regression model was afterward fit to this population of 374 sets of CFD simulations. Eventually, the developed regression model was evaluated with new sets of unused climatic and design data when a high agreement with a mean discrepancy of 3% between the predicted and simulated BIPV cell temperatures was observed.

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“…It was noted that there was non-uniform distribution of surface temperature owing to the lateral eddies developed in the flow. In a different study, the role of cavity airflow on PV array performance was investigated using particle image velocimetry and it was found that the upstream velocity can be 1.26 to 1.35 times slower than the airflow in the cavity (Mirzaei et al 2014). The results also indicated that turbulent mixing in a stepped configuration of PV modules yields better performance compared to a flat configuration.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Modelling Approach to Optimising Photovoltaic Installations for Thermal Effects Mitigation

Chiteka

Madiye

Chingosho

et al. 2021

Preprint

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Solar energy presents one of the best alternative sources of energy in the current bid to mitigate the negative impacts of global warming. The present study evaluated the influence of installation configuration together with the meteorological parameters on temperature characteristics of a solar photovoltaic array. Three dimensional simulation using Computational Fluid Dynamics was used in the numerical analysis of the temperature characteristics on solar PV arrays. The Shear Stress Transport k-ω model was employed to analyse the turbulent characteristics of the airstream near the photovoltaic array. A temperature prediction model was developed using Artificial Neural Networks and the model was found to be accurate with a coefficient of determination, R2 above 90 %. A Response Surface Methodology optimization model was developed to maximize energy generation while minimizing solar photovoltaic cell operating temperature. The models were able to reduce temperature and improve energy generated by 3.9 %. The optimized tilt and azimuth angles were found to be 28.2o tilt and 13.2o respectively yielding an average cell temperature of 29.3 oC which gave 3.9 % increase in energy and revenue generated.

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Investigation of the role of cavity airflow on the performance of building-integrated photovoltaic panels

Cited by 36 publications

References 24 publications

A review on the application of photovoltaic thermal systems for building façades

A review on the application of photovoltaic thermal systems for building façades

A new regression model to predict BIPV cell temperature for various climates using a high-resolution CFD microclimate model

A Numerical Modelling Approach to Optimising Photovoltaic Installations for Thermal Effects Mitigation

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