Knysh L. The development of scientific bases for the creation of high-cal thermophotovoltaic solar plants with parabocylindrical concentrators

The theoretical generalization and creating universal methods of energy characteristics calculations for concentrated solar radiation receiving systems in prospective combined thermophotovoltaic plants were held. The concept of solar thermophotovoltaic plant was justified. In upper energy level this plant represented with photoelectric transformation based on arsenide-gallium solar cells under the influence of concentrated solar radiation. Heat transfer agent of lower level removes residual heat from the solar cells and sends it for utilization to steam turbine cycle. The ability of creating thermophotovoltaic plants on the basis of existing technologies was proven. The solar transformation efficiency could be 40%, which is significantly higher than actual attained world level for solar power plants. A new method of defining the optimum plant efficiency depending on the temperature modes was developed. T-S diagram of quasi-binary thermophotovoltaic cycle was created. Mathematical model, algorithm and software for defining energy characteristics in the system "Sun- parabocylindrical concentrator - heat receiver" were developed based on a generalized mathematical model of the solar radiation concentration process. Based on Navier-Stokes system of equations mathematical models of the energy transfer were developed for different types of combined heat receivers: without photo conversion, with unilateral and bilateral cooling of the solar cells. Software modules were developed and complex numerical study of heat transfer in solar radiation receiving systems was held. Correctness of designed mathematical models and reliability of obtained results were proven by comparing these results with experimental data.