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Currently, in the energy supply of agroindustrial complex facilities there is an increasing interest in the development of structures and engineering systems using renewable energy sources, including combined photovoltaic-thermal modules (PVT-modules), combining photovoltaic modules (PV-modules) and solar collectors in one design. The use of PVT-modules technology makes it possible to increase the electrical performance of solar cells due to their cooling during operation, while the use of PVT-modules integrated into the roofs and facades of buildings can significantly reduce the need for centralized electricity and heat supply. The purpose of this work is to develop a CFD model of a solar PVT module for producing an estimate of the thermal performance of a PVT module. Using the ANSYS Fluent software package, a CFD model of the PVT module was developed. The contours of the temperature distribution, the coolant pressure in the PVT module channel at different values of the coolant flow at the entrance to the PVT module were obtained. The paper presents the daily variation of thermal power and total insolation calculated using the solar calculator built into ANSYS. The verification of the developed CFD-model of the PVT-module showed the comparability of the calculated values with the data obtained analytically and experimentally - the relative error of the results was no more than ± 1%. ANSYS is an effective software package that allows simulating thermal processes in PVT-modules.

In the field of energy supply to agro-industrial facilities, there is an increasing interest in the development of structures and engineering systems using renewable energy sources, including solar concentrator thermal and photovoltaic modules that combine photovoltaic modules and solar collectors in one structure. The use of the technology of concentrator heat and photovoltaic modules makes it possible to increase the electrical performance of solar cells by cooling them during operation, and significantly reduces the need for centralized electricity and heat supply to enterprises of the agroindustrial complex. (Research purpose) The research purpose is in numerical modeling of thermal processes occurring in a solar concentrator heat-photovoltaic module. (Materials and methods) Authors used analytical methods for mathematical modeling of a solar concentrator heat and photovoltaic module. Authors implemented a mathematical model of a solar concentrator heat and photovoltaic module in the ANSYS Fluent computer program. The distribution contours of temperature and pressure of the coolant in the module channel were obtained for different values of the coolant flow rate at the inlet. The verification of the developed model of the module on the basis of data obtained in an analytical way has been performed. (Results and discussion) The results of comparing the calculated data with the results of computer modeling show a high convergence of the information obtained with the use of a computer model, the relative error is within acceptable limits. (Conclusions) The developed design of the solar concentrator heat and photovoltaic module provides effective cooling of photovoltaic cells (the temperature of photovoltaic cells is in the operating range) with a module service life of at least twenty-five years. The use of a louvered heliostat in the developed design of a solar concentrator heat and photovoltaic module can double the performance of the concentrator.