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

Table 4

Comparison of (𝜕𝑝/𝜕𝑇)_𝜌 among the calculated and experimental values for R11 at 400 K [1, 18, 30].

𝑝/MPa	𝜌/mol⋅L^−1	(𝜕𝑝/𝜕𝑇)𝜌(MPa⋅K^−1)
		TPC^Helmholtz	TPC^(1)	TPC^(2)	TPC^(3)
1.4074	8.6318	0.3834	0.7986	0.4312	0.4310
2.1000	8.6827	0.3948	0.8120	0.4375	0.4375
3.1000	8.7509	0.4065	0.8301	0.4460	0.4462
4.1000	8.8142	0.4174	0.8472	0.4539	0.4544
5.1000	8.8732	0.4276	0.8633	0.4614	0.4621
6.1000	8.9286	0.4373	0.8787	0.4685	0.4694
7.1000	8.9810	0.4465	0.8933	0.4753	0.4764
8.1000	9.0306	0.4554	0.9074	0.4818	0.4831
9.1000	9.0780	0.4638	0.9210	0.4880	0.4895
10.1000	9.1232	0.4719	0.9340	0.4940	0.4957
11.1000	9.1665	0.4797	0.9467	0.4998	0.5017
12.1000	9.2081	0.4872	0.9589	0.5053	0.5075
13.1000	9.2481	0.4945	0.9708	0.5107	0.5131
14.1000	9.2868	0.5015	0.9824	0.5160	0.5185
15.1000	9.3241	0.5083	0.9937	0.5211	0.5238
16.1000	9.3602	0.5149	1.0046	0.5260	0.5289
17.1000	9.3952	0.5214	1.0154	0.5309	0.5339
18.1000	9.4292	0.5277	1.0259	0.5356	0.5388
19.1000	9.4623	0.5338	1.0361	0.5402	0.5436
20.1000	9.4944	0.5398	1.0462	0.5447	0.5483
21.1000	9.5257	0.5456	1.0560	0.5491	0.5529
22.1000	9.5562	0.5513	1.0657	0.5534	0.5574
23.1000	9.5859	0.5569	1.0752	0.5576	0.5618
24.1000	9.6150	0.5624	1.0845	0.5617	0.5661
25.1000	9.6434	0.5678	1.0937	0.5658	0.5703