Developmnt of Generalized Predictive Procedures on Thermophysical Properties of Novel Working Fluids

本研究的目的是：（i）为目前有关的各种热能转换系统中具有技术重要性的几种新工作流体提供一套可靠的热力学性质数据，以及（ii）根据实验获得的性质数据，建立了状态方程和相关的热力学关联式，并总结了整个研究项目所取得的主要成果如下;（1）用磁密度计与变容金属波纹管联用，对卤代烃R 114和R 152 a及其二元混合物的饱和液体密度进行了精确测量。关于这个属性的可用信息是如此有限，由于其精确测量的困难，可以通过本研究来解决。(2)本文提出了一种测量液体等压比热容的新方法，并对该方法进行了精确的测量。 ...更多信息 对R114饱和液相和压缩液相的等压比热容测量数据进行了广泛的温度和压力范围内的检验。(3)本文根据微扰理论发展了一个通用的状态方程，用以预测几种重要卤代烃的不同热力学性质。(4)建立了二元混合制冷剂R22 + R114系统的热力学状态方程，揭示了基本热力学性质与组成的关系。(5)建立了一个通用的程序来预测可靠和系统的热力学性质的基础上，16种不同的制冷剂，但有限数量的观察到的属性数据。对这16种制冷剂的蒸汽压缩热泵系统性能进行了理论分析，为这一热力学领域的进一步研究积累了新的知识。少

The present research has been performed with the objectives;(i) to provide a reliable set of thermodynamic property data for several new working fluids of technical importance in various thermal energy conversion systems currently concerned, and (ii) to formulate equations of state as well as related thermodynamic correlations on the basis of experimentally obtained property data.The principal results achieved throughout the present research project are summarized as follows;(1) The precise measurements of the saturated liquid densities for halogenated hydrocarbons, R 114 and R 152a, and their binary mixtures have been performed using a magnetic densimeter coupled with a variable-volume metallic bellows. An available information about this property was so much limited due to its difficulties in precise measurements which could be solved by the present study.(2) A novel measuring technique for measuring the isobaric specific heat capacities of liquids has been developed and a precise se … More t of measured isobaric specific heat capacity data for R 114 in its extensive range to temperatures and pressures has been obtained for saturated and compressed liquid phase of R 114.(3) A generalized equation of state has been developed based upon the so-called perturbation theory so as to predict the different thermodynamic properties of several halogenated hydrocarbons of importance.(4) A thermodynamic equation of state for the binary refrigerant mixture R 22 + R 114 systems has been developed and the composition dependence of essential thermodynamic properties has been revealed extensively.(5) A generalized procedure to predict reliable and systematic thermodynamic properties for 16 different refrigerants on the basis of available but limited quantity of observed property data has been established. Some theoretical analysis of the vapor-compression heat pump system performance associated with these 16 refrigerants has been also performed.It seems us fair to conclude that we have succeeded in accumulating new knowledge in this field of thermodynamics which would become another starting points for further advanced studies. Less