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由于目前氟里昂在工作温度范围内的导热系数数据很少,有的数据也是残缺不全,不能满足ORC系统设计者的需要。本文对8种常用的氟里昂的导热系数,在100～400K范围内求出拟合公式。根据这些经验公式,就可以计算各种氟里昂在各种温度下的导热系数值(在公式的适用温度范围内)。计算值与实验值比较,7种氟里昂的最大相对误差都小于2.83％,证明计算结果是可靠的。
Due to the current Freon in the operating temperature range of thermal conductivity data is very small, and some incomplete data, can not meet the needs of ORC system designers. In this paper, the thermal conductivity of eight commonly used freon is calculated in the range of 100 ~ 400K. Based on these empirical formulas, it is possible to calculate the thermal conductivity values of various Freons at various temperatures (within the applicable temperature range of the formula). Comparing the calculated value with the experimental value, the maximum relative errors of the seven freons are less than 2.83%, which proves that the calculation result is reliable.