Повышение эффективности двигателей Стирлинга путём перераспределения тепловых потоков во внутреннем контуре

Abstract

The article describes ways to improve efficiency of Stirling engines by redistributing heat fluxes in the inner loop. As agents influencing the heat flows, the contact thermal resistance, the shuttle conduction, the pumping loss, the heat flow inside the displacer by means of the radiation and convection are considered. The methodologies of calculating studied phenomena are described. The main aspects of a numerical model, which is intended for calculating shuttle conduction in tsilindro-piston group in Stirling engine, is provided. As a result of studying the ways of influencing the distribution of temperature fields of the internal parts of the internal circuit of Stirling engine the constructive measures to improve engine 1R30/6 were developed. As a result of these activities, the estimated reduction of heat loss is 1385 watts, which should help to increase the efficiency of the engine by 2%.