DETERMINATION OF THE THERMAL CAPACITY OF PHOTOVOLTAIC MODULES BUILT WITH DIFFERENT TECHNOLOGIES
DOI:
https://doi.org/10.59627/cbens.2014.2077Keywords:
Solar Energy, Photovoltaic Module, Thermal CapacityAbstract
Numerical simulation programs are an excellent alternative to forecast the behavior of photovoltaic systems. FVCONECT software, developed in the Solar Energy Laboratory (LABSOL) at Federal University of Rio Grande do Sul (UFRGS), has this functionality, simulating with good precision the behavior of a grid connected system, from the knowledge of the modules, inverters, electric grid and region climate data. As part of a project from which LABSOL participates, the software will be adapted to perform the real-time monitoring of a photovoltaic system, using measured temperature, thermal radiation and local wind velocity data. For that, it is necessary to alter some of the models used on the program, as the module temperature calculation model. A model which considers the thermal accumulation of the system must be used, and it is, therefore, necessary to know the thermal capacity of the photovoltaic modules. Two different modules were tested, one built with monocrystalline silicon, and other built with thin-film technology, to obtain their thermal capacity per mass unit. These results were similar for both modules, being 823 J/kg.K for the monocrystalline silicon one, and 785 J/kg.K for the thin-films one.
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References
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