Performance Evaluation of Novel Concentrating Photovoltaic Thermal Solar Collector under Quasi-Dynamic Conditions

Abstract

Concentrating Photovoltaic Thermal (CPVT) collectors are suitable for integration in limited roof space due to their higher solar conversion efficiency. Solar sunlight can be used more effectively by CPVT collectors in comparison to individual solar thermal collectors or PV modules. In this study, the experimental investigation of a novel CPVT collector called a PC (power collector) has been carried out in real outdoor conditions, and the test set-up has been designed based on ISO 9806:2013. A quasi-dynamic testing method has been used because of the advantages that this method can offer for collectors with a unique construction, such as the proposed collector, over the steady-state testing method. With a quasi-dynamic testing method, it is possible to characterize the collector within a wide range of incidence angles and a complex incidence angle modifier profile. The proposed novel collector has a gross area of 2.57 m2. A maximum power output per collector unit area of 1140 W is found at 0 °C reduced temperature (1000 W/m2 irradiance level), while at a higher reduced temperature (70 °C), it drops down to 510 W for the same irradiance level. The data have been fitted through a multiple linear regression method, and the obtained efficiency curve coefficients are 0.39, 0.192, 1.294, 0.023, 0.2, 0, −5929 and 0 for Kθd, b0, c1, c2, c3, c4, c5 and c6, respectively. The experimental characterization carried out on the collector proved that the output powers calculated by using the obtained parameters of the quasi-dynamic testing method are in good agreement with experimental points.

Optical Developments in Concentrator Photovoltaic Systems—A Review

“…The authors from Mouloud MAMMERI University of Tizi Ouzou designed a CPV system [149] that achieved a power gain of 10-13%. A Swedish company, MG Sustainable Engineering AB, experimented with a CPV/T system that achieved output power of 1140 W per collector [150].…”

Modeling of an Integrated Renewable-Energy-Based System for Heating, Cooling, and Electricity for Buildings

“…A solar heat rejection unit equipped with a dry-cooler is placed in a parallel loop to avoid over-heating, and is engaged with a three-way valve once the collector outlet temperature exceeds 85 • C. Further details of the PVT collector and its characterization are provided in Refs. [27][28][29].…”