论文部分内容阅读
临界参数是流体非常基础而重要的热物理性质。临界参数在涉及能源、化工、制药、环境等领域的科学研究和工程计算中有着广泛的应用。目前使用的部分制冷剂拥有较高的ODP和GWP,会逐渐被淘汰.因此,寻找新的替代物和替代方案是一项非常重要的任务。在替代物研究中,临界参数作为制冷剂的基础热物性,是首先要开展的研究.本文实验测量了R600a临界参数,用于检验实验装置的准确度和可靠性。结果表明,R600a的临界温度偏差为0.168 K,临界密度的相对误差为3.5%。在此基础上,测量了R161的临界温度、临界密度和临界压力,为替代制冷剂的研究提供了最基础的临界参数数据.
The critical parameter is the very basic and important thermophysical property of the fluid. The critical parameters are widely used in scientific research and engineering calculation in the fields of energy, chemical engineering, pharmacy and environment. Some of the currently used refrigerants, which have higher ODP and GWP, will gradually be eliminated, so finding new alternatives and alternatives is a very important task. In the study of alternatives, the critical parameters as the basic thermophysical properties of refrigerant are the first to be studied.In this paper, the critical parameters of R600a were measured and used to test the accuracy and reliability of the experimental device. The results show that the critical temperature deviation of R600a is 0.168 K, and the relative error of critical density is 3.5%. On this basis, the critical temperature, critical density and critical pressure of R161 were measured, which provided the most basic critical parameter data for the research of alternative refrigerants.