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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. ORCID:, Sweet, T. ORCID:, Gao, M. ORCID:, 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: 05 May 2023 17:51

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