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提出一种等价热力变换分析法,它根据有效能消耗总伴随着热量输运过程的物理事实,定义了各子过程和循环的等效热力温度,把实际不可逆循环的热力/热泵循环系统等价变换为简单的正/逆卡诺循环系统进行分析,导出的等效高温热源温度计算式奠定了等价热力变换分析法的基础;提出采用TR-h图和TR-q图作为热力/热泵系统性能分析和有效能消耗分析的工具图,可直观表示热力系统中多种物质的热量、功量交换和焓的变化,易于计算出系统性能系数和各项有效能消耗;以热泵热水器和R22工质为例,系统介绍了等价热力变换分析法,示范性给出了等价热力变换分析法中关键参数的拟合式,展示了该分析法在变工况性能模拟和推算应用中的优势和良好前景.
An equivalent thermodynamic transformation analysis method is proposed. According to the physical fact that the effective energy consumption always accompanies the heat transport process, the equivalent thermal temperature of each sub-process and cycle is defined. The actual irreversible cycle heat / heat pump cycle system The analysis of the temperature-to-energy conversion into a simple forward / reverse Carnot cycle system and the derivation of the equivalent high-temperature heat source temperature calculation form the basis of the equivalent thermodynamic analysis method. The TR-h and TR-q charts are proposed as the heat / heat pump system Performance analysis and effective energy consumption analysis tool map can be directly expressed in the thermal system of a variety of substances in the heat, power exchange and enthalpy changes, easy to calculate the system performance coefficient and the effective energy consumption; heat pump water heater and R22 As an example, the equivalent thermodynamic analysis method is introduced systematically, and the fitting of the key parameters in the equivalent thermodynamic analysis method is given. The advantages of the analytical method in the simulation and calculation of variable working conditions are demonstrated And good prospects.