On the basis of the analysis of fundamental principle of thermoelectric refrigeration , the steady state mathematical model of the thermoelectric system was founded . according to the model , the theoretical analysis and calculation are made on various working conditions , and analyzed theoretically the effects on thermoelectric system which caused by hot and cold temperature difference , the device ’ s effective system figure of merit , the properties of the heat changers , which established theoretical basic for the opening up and design of the thermoelectric system and its performance test 在分析热电制冷基本原理的基础上,建立了热电装置的稳态系统数学模型,并依据该模型对热电装置系统进行了不同的工作状态下的热力分析计算,并就热电装置的冷热端温差、电堆片的优值系数、散热器的散热性能与热电热泵装置性能的影响进行了理论分析,为热电装置的开发设计和现有热电装置的性能测试建立计算理论基础。
The fuel cells models are presented in chapter 3 . based on the balance conditions in fuel cells stack , the dynamic performance is analyzed . the dynamic model is developed with a set of correlation equations of voltage , fuel utilization , current density and other variables involved in the operating course , which are some partial differential equations with variable coefficients 第三章以熔融碳酸盐燃料电池为例，以数值分析的方法，根据mcfc电堆发电过程中物质与电量平衡，分析了电堆的内部动态特性，就输出电压与燃料气体利用率和电流密度等相关量建立了由一组变系数偏微分方程和积分方程描述的数学模型。
Studying the heat - mass transfer and multi - spices electric - chemical reaction , a dynamic temperature model was deduced for molten - carbonate fuel cell stack . the thermal radiation , shift reaction , and the change of gas spices were considered in this model . establishing momentum equation , the paper has developed a 3d temperature and flow fields model for mcfc stack based on cfd technique 建立了熔融碳酸盐燃料电池堆内部单体的暂态温度模型，并考虑了电堆的辐射换热、转换反应、反应气体组分变化对温度场的影响；根据mcfc的微分控制方程组，考虑气体组分的热力学性质及动量变化的影响，利用数值分析方法求解熔融碳酸盐燃料电池堆的三维流场与温度场，分析了各作用因素对熔融碳酸盐燃料电池堆温度分布的影响机制。
The procedure of the test is as follows : first , the piezoelectric stack has been examined to test the performance parameters of the piezoelectric material ; second , the 2 - x actuator has been functioned with different static voltage to test its capability ; last , function the 2 - x actuator with voltage with different frequencies to test its dynamic properties . all the output of the actuator has been measured by the laser vibration measurement 首先对压电堆进行试验,验证压电材料的性能参数;再对推挽式双x驱动器施加不同的静电压驱动它,验证作动器的驱动能力,最后对推挽式双x驱动器输入不同频率的电压驱动,测量该驱动机构的动态特性,试验均采用激光测试仪测量推挽式双x驱动器的输出特性。
Similarly to other methods for smart rotor , the most important and difficult problem is the design of the actuator . first , the piezoelectric smart material has been studied and an actuator with piezoelectric stack has been proposed in the mode of parallel connection in electrics and series - wound in mechanics according to the property of the piezoelectric porcelain . second , a 2 - x actuator has been designed with the piezoelectric stack active part according to the triangle theory 本文首先对压电智能材料进行研究,根据压电陶瓷的特点,采用电学并联、力学串联的设计模式,提出一种压电堆主动驱动部件,在此基础上,根据三角形放大原理,设计了推挽式双x放大机构,并将压电堆主动件应用于推挽式双x机构,形成了推挽式双x驱动器。
