Abstract
This work is part of the dynamic of proposing a solution to the problem of access to electricity in Chad, which has a rate of access to electricity of 3%. N’Djamena has significant solar potential that can be harnessed to generate electricity. In this paper, we present a theoretical study of the performances of the Dish/Stirling system with the purpose of producing electricity, based on a mathematical model taking into account each of the subparts of the system (concentrator, solar cavity receiver, and Stirling engine). Hydrogen is preferred to helium as the working fluid for operating the Stirling engine at high temperatures. This coupled model made it possible to estimate the monthly average of the electric power produced by this modular system and also its overall solar electricity yield.
Highlights
Alarming reports of the unprecedented effects of fossil fuel use on the climate have been at the center of research into new technologies
The Dish/Stirling system among the four (4) concentrated solar power systems of its modular nature is suitable for small-scale electricity production [1]
The temperature increase on the outer surface of the solar absorber related to the direct normal irradiation (DNI) generates thermal and optical losses inside the solar parabolic dish concentrator and the receiving cavity relative to the properties of the materials used by these
Summary
Alarming reports of the unprecedented effects of fossil fuel use on the climate have been at the center of research into new technologies. Thermodynamic solar is one of the solar technologies that operate solar radiation to generate electricity. The Dish/Stirling system among the four (4) concentrated solar power systems of its modular nature is suitable for small-scale electricity production [1]. The use of this system is not limited to the production of electricity but in several areas. Ahmadi et al [4] made a thermodynamic analysis and used the algorithm of NSGAII to optimize the objective function associated with the power output, thermal for a motor with solar system in order to study the factors of optimal design, and the optimal thermoeconomic performances. There are different methods of predicting or estimating the daily global radiation from one region to another [7, 8]
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