Table 1.
Fitting parameters , , and of Equation (20), number of available data (N) and data fitted () when . Mean absolute percentage deviation (MAPD), mean deviation (MD), maximum percentage deviation (PDm), and reduced temperature at which the PDm is found for the fluids studied. NC means number of carbons. For the fluids in boldface, there are not enough data in the high temperature range, so the value is obtained. The number between brackets indicates the variation in the last digits of the parameter value (positive or negative) that increases the MAPD by 0.25% when the others parameters are kept fixed. For instance, in parameter means that if one takes the value instead of , the obtained MAPD would be 0.25% greater than the MAPD with .
| CN | Fluid | MAPD | MD | PDm | |||||
|---|---|---|---|---|---|---|---|---|---|
| mol2/3) | mol2/3) | mol2/3) | (%) | (%) | (%) | ||||
| 1 | methane | 7.5(12+) | 5.086(88+) | −3.35(34+) | 127/126 | 0.97 | −0.28 | 8.5 | 0.11 |
| 2 | ethane | 5.1(10+) | 3.68(13+) | −3.63(31+) | 163/160 | 2.06 | −0.77 | 19.2 | 0.01 |
| 3 | propane | 4.92(48−) | 3.63(16−) | −3.08(24−) | 193/191 | 1.80 | 0.04 | 27.2 | 0.01 |
| 4 | n-butane | 3.70(51+) | 3.44(12+) | −3.75(23−) | 126/118 | 3.14 | 1.17 | 48.9 | 0.01 |
| 5 | n-pentane | 3.84(76−) | 3.488(80−) | −3.25(21−) | 149/143 | 1.72 | 1.03 | 36.5 | 0.01 |
| 6 | n-hexane | 3.8(14−) | 3.574(64+) | −3.18(17+) | 270/269 | 0.97 | 0.18 | 12.8 | 0.07 |
| 7 | n-heptane | 4.32(74+) | 3.560(68+) | −2.78(20+) | 363/357 | 0.89 | 0.09 | 9.7 | 0.22 |
| 8 | n-octane | 5.5(20−) | 3.702(65+) | −2.55(23+) | 196/194 | 1.04 | 0.43 | 41.1 | 0.01 |
| 9 | n -nonane | 0.0(81+) | 3.573(44+) | −2.86(21+) | 78 | 0.41 | 0.07 | 3.0 | 0.80 |
| 10 | n-decane | 3.8(26−) | 3.686(62−) | −2.16(27+) | 149 | 0.95 | −0.08 | 5.8 | 0.68 |
| 11 | n -undecane | 0.0(34+) | 3.663(53+) | −2.25(27+) | 60 | 0.55 | 0.05 | 2.6 | 0.49 |
| 12 | n-dodecane | 5.2(38+) | 3.633(65−) | −2.09(33−) | 100 | 0.91 | 0.30 | 6.7 | 0.91 |
| 13 | n-tridecane | 4(12+) | 3.655(45+) | −2.22(28+) | 48 | 0.33 | −0.02 | 1.3 | 0.69 |
| 14 | n-tetradecane | 15(14−) | 3.767(53−) | −1.85(44+) | 49 | 0.49 | 0.07 | 1.9 | 0.97 |
| 15 | n-pentadecane | 12(44+) | 3.705(44+) | −1.97(47+) | 40 | 0.40 | −0.01 | 2.0 | 0.67 |
| 16 | n-hexadecane | 7.7(37−) | 3.876(64+) | −2.19(67−) | 127 | 1.33 | 0.12 | 6.8 | 0.40 |
| 17 | n-heptadecane | 7.3(11−) | 3.914(54+) | −2.46(27−) | 44 | 0.44 | 0.08 | 2.1 | 0.78 |
| 18 | n-octadecane | 8.0(13+) | 3.990(59−) | −2.36(30−) | 39 | 0.48 | 0.05 | 1.9 | 0.79 |
| 19 | n-nonadecane | 8.13(79−) | 3.981(67−) | −2.48(24−) | 23 | 0.70 | 0.02 | 5.4 | 0.34 |
| 20 | n-eicosane | 7.7(11+) | 4.079(75−) | −2.78(26−) | 38 | 1.04 | −0.10 | 11.7 | 0.33 |
| 21 | n-heneicosane | 8.0(10+) | 4.225(76+) | −2.83(22+) | 28 | 0.47 | −0.18 | 2.8 | 0.07 |
| 22 | n-docosane | 7.8(12+) | 4.223(78+) | −2.75(31+) | 32 | 0.58 | −0.28 | 2.9 | 0.07 |
| 23 | n-tricosane | 7.8(12+) | 4.219(84−) | −2.84(27+) | 36 | 0.98 | 0.12 | 3.4 | 0.06 |
| 24 | n-tetracosane | 7.9(13+) | 4.286(96+) | −2.79(31+) | 36 | 0.93 | −0.11 | 3.8 | 0.98 |
| 25 | n-pentacosane | 8.17(67+) | 4.330(40−) | −2.54(10−) | 15 | 0.29 | −0.21 | 3.4 | 0.06 |
| 26 | n-hexacosane | 8.2(11+) | 4.352(49−) | −2.43(19−) | 31 | 0.30 | −0.04 | 3.7 | 0.06 |
| 27 | n-heptacosane | 8.07(60+) | 4.331(41−) | −2.42(12−) | 16 | 0.31 | −0.19 | 3.8 | 0.06 |
| 28 | n-octacosane | 7.80(97+) | 4.24(15−) | −2.35(25−) | 24 | 1.67 | 1.26 | 7.7 | 0.78 |
| 29 | n-nonacosane | 7.70(58+) | 4.278(42−) | −2.33(12−) | 16 | 0.31 | −0.18 | 3.9 | 0.06 |
| 30 | n-triacontane | 7.72(83+) | 4.276(95−) | −2.32(19−) | 22 | 1.29 | 0.86 | 6.0 | 0.84 |
| 32 | n-dotriacontane | 7.58(90+) | 4.356(45−) | −2.24(17−) | 25 | 0.32 | −0.09 | 4.0 | 0.06 |
| 36 | n-hexatriacontane | 7.65(58+) | 4.399(58−) | −2.15(15−) | 18 | 0.43 | −0.13 | 4.6 | 0.06 |
| Overall mean absolute percentage deviation (defined in Equation (30)) | 0.79 | ||||||||