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Trnsys Validation of a 1.5 Axis Tracking Concentrated Solar Photovoltaic Thermal System

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Document pages: 7 pages

Abstract: This paper reports on TRNSYS simulation results on a hybrid concentrated solar photovoltaic thermal cooled collector, CSPVT. The system is composed of a 90Wp monocrystalline PV panel which is used to generate both electrical power and hot water for domestic use. The software was used to predict the total energy yield from a CSPVT. In addition to that, a prototype was built and tested to give actual energy yields. An existing Campbell weather station located near the experimental site, logging 15-minute data of actual parameters such as: incident radiation, voltage and current, enabled comparison with the model’s estimate. The electrical and thermal energy yields were closer to actual ones. Total energy production yield was 76 for Cape Town, South Africa, while TRNSYS predicted 82 . Thus, we conclude that, TRNSYS modelling can be used to predict the performance of the CSPVT at a location near the weather stations listed in the software’s database. A capital cost analysis showed that over a 15-year life span, the CSPVT could possibly give a unit energy cost less than half of that from a conventional PV panel.

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