МОДЕЛИРОВАНИЕ КОНЦЕНТРИРОВАННОГО СОЛНЕЧНОГО ИЗЛУЧЕНИЯ ИНФРАКРАСНЫМ ДЛЯ ИЗМЕРЕНИЯ ТЕПЛОВЫХ ХАРАКТЕРИСТИК ТЕПЛОФОТОЭЛЕКТРИЧЕСКОГО МОДУЛЯ СОЛНЕЧНОЙ КОНЦЕНТРАТОРНОЙ УСТАНОВКИ

Abstract

When developing renewable energy conversion devices, more and more attention is being paid to improving the efficiency of using renewable energy. The efficiency of modern mass-produced solar photovoltaic modules is about 20 percent. In order to increase the completeness of the use of solar energy, the direction of thermal photovoltaic systems is receiving significant development. Devices of this type realize the task of recycling the remaining 80 percent of energy into heat for its subsequent use. The conversion of concentrated solar energy into photoelectricity and heat is carried out by a thermal photovoltaic module. The study of its photovoltaic and thermal parameters is one of the main tasks when creating an appropriate installation. (Research Purpose) The research purpose is developing a methodology and creating a laboratory installation for studying the thermal characteristics of a thermal photovoltaic module. (Materials and methods) The design of the thermal photovoltaic module is presented. The spectral characteristics of the photodetector surface of the module in the visible and infrared spectral ranges have been studied by dispersion and Fourier spectroscopy. (Results and discussion) The analysis of the results of the study of the reflection spectra in the visible and infrared spectral ranges along with the spectral density of the infrared Planck radiation for the temperatures of the infrared emitter in the region of 250-300 degrees Celsius is carried out. The conversion coefficients of the intensities of concentrated solar radiation into the density of the Stefan-Boltzmann infrared radiation flux are obtained. A test measurement of the stationary temperature of the coolant at the output of the module was carried out, according to which the flux density of the heating infrared radiation was calculated. This value is correctly consistent with the independently measured intensity of infrared radiation. (Conclusions) A laboratory measuring stand has been created to simulate concentrated solar radiation with infrared radiation of the thermal range to measure the thermal characteristics of the thermal photovoltaic module of a solar concentrator installation.