brake thermal efficiency

A Stirling heat engine model with heat resistance,heat leak,regenerator losses and mechanical friction losses is established and the shaft power and brake thermal efficiency performance of the engine is analyzed.

建立了存在热阻、热漏、回热损失和机械损失的斯特林热机模型,研究在线性唯象传热定律q∝△(T~(-1))下,热机的轴功率和制动热效率特性,导出了轴功率及制动热效率的表达式,用数值计算分析了热漏、回热损失和机械损失等不可逆因素对热机性能的影响。

Through experiment, the relation figures of engine rotation speed, coefficient of performance of heat pump and engine thermal efficiency are presented and analyzed.

通过实验,得出了发动机转速与热泵性能系数、发动机热效率的关系曲线,并进行了分析。