Calculation of Thermal Pressure Coefficient of R11, R13, R14, R22, R23, R32, R41, and R113 Refrigerants by 𝑝𝑉𝑇 Data

Table 5

Comparison of (𝜕𝑝/𝜕𝑇)_𝜌 among the calculated and experimental values for R11 at 440 K [1, 18, 30].

𝑝/MPa	𝜌/mol·L^−1	(𝜕𝑝/𝜕𝑇)𝜌(MPa⋅K^−1)
		TPC^Helmholtz	TPC^(1)	TPC^(2)	TPC^(3)
2.7745	7.3336	0.2189	0.5067	0.2614	0.2515
3.1000	7.4066	0.2271	0.5208	0.2679	0.2581
4.1000	7.5898	0.2486	0.5572	0.2846	0.2755
5.1000	7.7349	0.2664	0.5873	0.2983	0.2899
6.1000	7.8569	0.2818	0.6135	0.3102	0.3024
7.1000	7.9630	0.2955	0.6369	0.3207	0.3137
8.1000	8.0576	0.3080	0.6582	0.3304	0.3240
9.1000	8.1431	0.3195	0.6779	0.3392	0.3335
10.1000	8.2215	0.3302	0.6964	0.3475	0.3424
11.1000	8.2941	0.3403	0.7138	0.3552	0.3509
12.1000	8.3617	0.3498	0.7302	0.3626	0.3589
13.1000	8.4251	0.3587	0.7459	0.3695	0.3665
14.1000	8.4850	0.3673	0.7609	0.3762	0.3738
15.1000	8.5417	0.3755	0.7753	0.3826	0.3808
16.1000	8.5956	0.3833	0.7892	0.3887	0.3876
17.1000	8.6470	0.3909	0.8026	0.3946	0.3942
18.1000	8.6962	0.3981	0.8155	0.4003	0.4005
19.1000	8.7434	0.4052	0.8281	0.4058	0.4067
20.1000	8.7887	0.4120	0.8403	0.4112	0.4127
21.1000	8.8324	0.4185	0.8521	0.4164	0.4186
22.1000	8.8746	0.4249	0.8637	0.4215	0.4243
23.1000	8.9153	0.4312	0.8750	0.4264	0.4298
24.1000	8.9547	0.4372	0.8860	0.4312	0.4353
25.1000	8.9930	0.4431	0.8967	0.4359	0.4406
26.1000	9.0301	0.4489	0.9073	0.4404	0.4458