【摘要】 建立了热声热机微热力学循环模型,用有限时间热力学分析了其最优性能,导出了存在传热损失时热声热机微热力学循环的生态学性能与效率最佳特性关系,以及声功率和损失率与效率的性能关系,所得结论对实际热声热机的设计具有一定的理论指导意义。更多还原

【Abstract】 The thermoacoustic engine micro-cycle is of great importance to the thermoacoustic phenomenon.Taking an ecological optimization criterion as the objective,the optimal performance of a thermoacoustic engine micro-cycle model with heat transfer loss was analyzed by using finite-time thermodynamics.The relations between the ecological criterion and the efficiency,the sound work output rate and the efficiency,as well as the energy loss rate and the efficiency relation of the micro-cycle are investigated by numerical examples.The results obtained herein can provide some theoretical guidance for the design of a real thermoacoustic engine.更多还原