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: https://orcid.org/0000-0002-1217-6447, Sweet, T. ORCID: https://orcid.org/0000-0002-6947-5018, Gao, M. ORCID: https://orcid.org/0000-0001-9591-5825, 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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Abstract

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
URI:	https://orca.cardiff.ac.uk/id/eprint/100659

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