【摘要】 针对电冰箱制冷系统性能设计以试验为主,缺乏有效的物理分析手段的问题,抓住能量这一影响性能的关键因素,研究系统中能量的传递及流动,提出一套制冷系统能量流仿真分析模型。定义能量流元模型,并根据制冷系统的功能及能量传递关系划分能量流元,构建制冷系统能量流模型。提出特征能量以表征部件功能。将各部件的特征能量、设计变量及部件间的接口参数关联,构建并求解能量特性方程组,以能量为媒介研究系统各部件的参数设计及匹配关系。建立了制冷系统能量流模型仿真流程,以试验样机的测试结果验证了能量流建模方法的有效性。有助于通过考察能量流动特性支撑耗能机电产品节能降耗和性能优化。更多还原

【Abstract】 For the problem that performance design of refrigerator refrigeration system was done priority by experiment,and it was short of an effective physical analysis method,seized the energy that the key factor influencing the performance,the energy transmission and energy flow in refrigeration system were researched,and an energy flow simulation analysis model of the system was proposed. An energy flow element model was defined,the energy flow element of refrigeration system was divided according the function and energy transmission of the system,and an energy flow model of the system was structured. Characteristic energy was proposed to represent components ’ functions.Characteristic energy and design variables of components and interface parameters between components were associated,energy characteristic equation sets were structured and be solved,the energy was as a medium for the research of system components ’ parameter design and matching. The simulation procedure of the energy flow model was structured,and the effectiveness of the energy flow modeling method was verified by the test result of an experimental prototype. Through the investigation of energy flow characteristic,it contributed for energy-saving and performance optimization design of mechanical and electrical products.更多还原