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A coupled optical-thermal-electrical model to predict the performance of hybrid PV/T-CCPC roof-top systems

Li, W., Paul, M.C., Rolley, M., Sweet, T., Gao, M., Baig, H., Fernandez, E.F., Mallick, T.K., Montecucco, A., Siviter, J., Knox, A.R., Han, G., Gregory, D.H., Azough, F. and Freer, R. 2017. A coupled optical-thermal-electrical model to predict the performance of hybrid PV/T-CCPC roof-top systems. Renewable Energy 112 , pp. 166-186. 10.1016/j.renene.2017.05.012

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A crossed compound parabolic concentrator (CCPC) is applied into a photovoltaic/thermal (PV/T) hybrid solar collector, i.e. concentrating PV/T (CPV/T) collector, to develop new hybrid roof-top CPV/T systems. However, to optimise the system configuration and operational parameters as well as to predict their performances, a coupled optical, thermal and electrical model is essential. We establish this model by integrating a number of submodels sourced from literature as well as from our recent work on incidencedependent optical efficiency, six-parameter electrical model and scaling law for outdoor conditions. With the model, electrical performance and cell temperature are predicted on specific days for the roof-top systems installed in Glasgow, Penryn and Jaen. Results obtained by the proposed model reasonably agree with monitored data and it is also clarified that the systems operate under off-optimal operating condition. Long-term electric performance of the CPV/T systems is estimated as well. In addition, effects of transient terms in heat transfer and diffuse solar irradiance on electric energy are identified and discussed.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords: Solar energy; Crossed compound parabolic concentrator; Photovoltaic cell; Hybrid solar collector; Outdoor condition; Electrical model
Additional Information: This is an open access article under the terms of the CC-BY Attribution 4.0 International license.
Publisher: Elsevier
ISSN: 0960-1481
Date of First Compliant Deposit: 7 June 2017
Date of Acceptance: 2 May 2017
Last Modified: 04 Dec 2020 16:30

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