体积功

关于热力学中体积功的计算

Calculations of volume work in thermodynamics

结合第一和第二定律，对于压强体积功我们可以这样写。

And we combine this with first law , which for the case of pressure volume changes we write as this .

分析显示，稳定循环时，系统循环体积功用于克服系统循环耗散功，而系统循环耗散功（热）与热管传热量呈一定关系。

The theoretical model was established to describe steady state circulation flow of a single loop pulsating heat pipe ( PHP ) with thermo-mechanical and hydrodynamics analysis .

本文提出了广义最小自由焓原理，并讨论了它给出的热力学信息；提出了体系非体积功效率和热耗率的概念和定义。

This article puts forward the principle of free enthalpy , discusses the thermodynamics information given by it , and puts forward the conception and definition of the non-volume efficiency rate and the rate of the thermal loss .

通过改变阀门开度和气库容积大小，分析了负载的阻力和空体积对声功输出和系统热效率的影响。

By adjusting valve opening and the volume of the gas reservoir , the influence of resistance and empty volume of load on the acoustic power output and thermal efficiency of the engine was also investigated .

形状记忆合金驱动器具有体积小、驱动功/重比大、无污染和噪音等特点。

The shape memory actuator has some characters , such as small cubage 、 large driver power weight ratio 、 no pollution and noise .