Proceedings of the XXth Conference of Open Innovations Association FRUCT (Apr 2020)
Performance Evaluation for the Parabolic Photovoltaic/Thermal Hybrid Solar System
Abstract
Concentrated PhotoVoltaic Thermal (CPVT ) or as it known in markets as stand-alone unit for the remote areas to supply the area with electricity and thermal hot water which differ for many years with different applications. In Heliopolis University (HU) for Sustainable Development two modules have been tested, thermally and electrically. The module of triple junction photovoltaic is the one which has the ability to work under high temperature. When the concentrated heat was focused on the electric module, the cooling is must to drop the temperature from 120C to 45C. The production of the heat has directed to cool the cell plays important role to use the thermal heat in different applications. The performance of the two modules have been investigated and the whole system has been described in details. At the end the research proposed different types of the thermal modules when it was noted that the useful power produced by the thermal was much power than the electric power produced by the photovoltaic PV. The system moves about two tracking axes and operated to test modules thermal PV. The receiving modules placed on the focus line displays with ten concave mirrors five up and five down. The triple junction photovoltaic cells technology has applied with water flow channels to cool the PV cells from back. The inlet water varied from 25C to 35C. By sensing the module temperature by the thermocouple, a solar pump is operated for circulating water in the system cycle. Temperature limit is set to 72C, above which the pump operates. Within that time temperature goes below the limit and thus the operating temperature of PV can be maintained with in specified limits to secure the life time of the modules. The outlet electrical power has connected to the grid by single phase invertor. The direct normal irradiation (DNI) is measured by solar sensors mounted on a solar tracker. Experimental results are used to evaluate the optimum application in Egypt from the thermal and electrical power obtained from the system. Therefore, CPVT is a promising technology for smart Cities.
Keywords
