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

Table 7

Comparison of (𝜕𝑝/𝜕𝑇)_𝜌 among the calculated and experimental values for R13 at 320 K [1, 6, 18, 30].

p/MPa	𝜌/mol·L^−1	(𝜕𝑝/𝜕𝑇)𝜌(MPa⋅K^−1)
		TPC^Helmholtz	TPC^(1)	TPC^(2)	TPC^(3)
15.0000	10.1650	0.3269	0.5262	0.4304	0.3063
16.0000	10.3040	0.3400	0.5457	0.4444	0.3175
17.0000	10.4310	0.3523	0.5640	0.4574	0.3281
18.0000	10.5490	0.3640	0.5813	0.4696	0.3381
19.0000	10.6600	0.3751	0.5980	0.4813	0.3479
20.0000	10.7630	0.3857	0.6138	0.4922	0.3571
21.0000	10.8610	0.3959	0.6290	0.5028	0.3660
22.0000	10.9530	0.4056	0.6436	0.5128	0.3746
23.0000	11.0410	0.4149	0.6578	0.5224	0.3829
24.0000	11.1240	0.4239	0.6713	0.5316	0.3909
25.0000	11.2040	0.4326	0.6846	0.5406	0.3988
26.0000	11.2810	0.4409	0.6975	0.5492	0.4064
27.0000	11.3540	0.4490	0.7099	0.5575	0.4138
28.0000	11.4250	0.4568	0.7221	0.5656	0.4211
29.0000	11.4930	0.4643	0.7339	0.5734	0.4282
30.0000	11.5590	0.4716	0.7455	0.5811	0.4352
31.0000	11.6220	0.4786	0.7567	0.5884	0.4419
32.0000	11.6840	0.4855	0.7679	0.5957	0.4486
33.0000	11.7440	0.4921	0.7788	0.6027	0.4552
34.0000	11.8020	0.4986	0.7894	0.6096	0.4616
35.0000	11.8580	0.5048	0.7997	0.6163	0.4679