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

作者：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; Freer R

来源：Renewable Energy, 2017, 112: 166-186.

DOI：10.1016/j.renene.2017.05.012

• Solar energy
• Crossed compound parabolic concentrator
• Photovoltaic cell
• Hybrid solar collector
• Outdoor condition
• Electrical model

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 incidence dependent 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.

• 出版日期2017-11