Thermodynamic Properties of Freon- on

TABLE 14. Experimental Studies of Thermodynamic Properties of Freon-21 on the Saturation Line 

Heat capacity of liquid Freon-21 was investigated in a wide interval of temperatures (Table 14), but experimental data are presented only in Refs. [2.12, 2.27]. In Ref. [0.11] the following interpolated formula is presented 

Deviation of values of saturated vapor pressure of Freon-21 from the adopted values in the present work. Experimental data 1, Raskazov et al. [2.10, 2.11] 2, Sheludyakov and others [2.15] 3, Benning and McHamess [2.24]. Tabular data 4, Benning and McHamess [2.24] 5, Rombusch and Giesen [2.37]. 

Heat capacity at constant pressure in the liquid phase in Ref. [2.12] was determined by a comparative method, i.e., heating curves of the investigated and reference liquids were compared on a time basis. The error in the results did not exceed 0.5%, with the largest contribution being when the heating curves are differentiated. In the region of overlapping temperatures, the discrepancy in the indicated results does not exceed 0.7% [2.12]. 

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