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定义了新的用于推算制冷混合工质饱和液体焓的对比温度和对比焓参数,发现了制冷混合工质饱和液体的对比焓和它的纯组分饱和液体的对比焓与对比温度的无量纲关系有同一化规律,给出了它们的无量纲对比态方程和利用纯工质饱和液体焓计算混合工质饱和液体焓的方程,确定了利用纯组分的临界点和标准沸点的温度确定制冷混合工质对比焓方程中的两个基本特征量:特征温差与特征焓差的方法;通过5种二元和三元混合工质验证计算,方程推算值的平均绝对偏差在1.0%以内.
The new comparative enthalpy and enthalpy parameters for calculating saturated liquid enthalpy of refrigerant mixtures were defined. The relative enthalpies of enthalpy and the enthalpies of comparison with saturated liquids of pure refrigerant were found. The relationship between them is given the same non-dimensional equation and their enthalpies of pure liquid saturated liquid are used to calculate the enthalpy of mixed liquid saturated liquid. It is determined that the critical component of the pure component and the temperature of the standard boiling point Two basic characteristic quantities in the comparison enthalpy equation: the difference between the characteristic temperature difference and the characteristic enthalpy difference; the average absolute deviation of the estimated value of the equation is within 1.0% through the verification calculation of the five binary and ternary mixed working fluids.