A solar concentrator coupled to a Stirling engine started at CDER-Bouzareah.
The Solar Thermodynamic Power Systems Team of the Thermal and Thermodynamic Solar and Geothermal Division of the CDER has just started a solar concentrator coupled to a Stirling engine produced at the CDER. Indeed, because of a significant solar potential, the development of solar power plants for the production of heat and electricity can constitute a major axis of the energy transition policy of our country.
The thermodynamic solar power systems of the Thermal and Solar Thermodynamics and Geothermal Energy Division research team works on machines for converting thermal energy into electrical energy. Among the projects currently developed, the production of electricity using a solar concentrator coupled to a Stirling engine. The system is made up of 3 sets: a parabolic shaped mirror with a 7.54 m² opening, a Stirling engine (ST05G), and a solar tracking system. The tracking system tracks the path of the sun and ensures optimum performance.
Principle of operation
The operating principle is based on the reflection of the solar radiation captured and concentrated by the mirrors of a parabola. The solar radiation is projected towards the receiver of the Stirling engine placed on the focal point, where the temperature can reach 550 ° C. The heat is used to heat up a fluid, usually air or helium, which is subjected to a 4-phase thermodynamic cycle; isochoric heating, isothermal expansion, isochoric cooling and finally isothermal compression. The heated gas drives an engine and will allow the production of electricity through the electric generator.
Under nominal conditions, the Stirling engine (ST05G) operates at a temperature of 650 ° C, and a pressure of 1MPa. The mechanical power produced is around 500W with a yield of 22%.
In the same section
Sunday, November 15th, 2015
The Applied Research on Renewable Energies Unit (URAER) of Ghardaïa organized on October 12th to 15th, 2014, the 3rd edition of the international seminar on new and renewable energies.