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本文论述了新学科“制冷系统热动力学”形成的必要性及基本内容,它是基于动态、分布参数及参数间定量耦合的观点,综合制冷原理、计算传热学与流体力学、自控原理及计算方法而形成的边缘新学科。作者应用“微元法”建立起一套基本分析方法,导出了制冷系统各参数的动态分布参数模型,在该基础上进行系统匹配与仿真研究。该学科的成熟将导致制冷设备及系统设计方法的更新,它对制冷系统优化设计、新型制冷自控元件研制,计算机控制深入制冷循环将产生巨大的影响。本文以压缩式制冷系统为例给出了系统各设备的动态分布参数数学模型。理论计算与试验数据十分吻合,得到了一系列令人感兴趣的新结果,证实了模型的可信性。
This paper discusses the necessity and basic content of the new discipline “Thermodynamics of Refrigeration System”. It is based on the dynamic, distributed parameters and the quantitative coupling between parameters. Based on the principle of cooling, the calculation of heat transfer and fluid mechanics, the principle of self-control and Computational methods and the formation of the new discipline edge. The author applies the “micro-element method” to establish a set of basic analysis methods, and derives the dynamic distribution parameter model of each parameter of the refrigeration system. On this basis, the system matching and simulation are studied. The maturity of the discipline will lead to the update of refrigeration equipment and system design methods. It will have a huge impact on the optimal design of refrigeration system, the development of new refrigeration control components, and the computer-controlled in-depth refrigeration cycle. In this paper, a compression refrigeration system is taken as an example to give the mathematical model of the dynamic distribution parameters of each equipment. The theoretical calculation is in good agreement with the experimental data and a series of interesting new results are obtained, confirming the credibility of the model.