Open Access

Table A.1

Polynomial factors for the vapor pressure equations of pure condensates

Element Temperature range (K) a0 a1 a2 a4 a4 a5 a6
CO T ≤ 61.55 10.43 −721.3 −10740 2.341 × 105 −2.392 × 106 9.478 × 106
T > 61.55 10.25 −748.2 −5843 3.939 × 104
CO2 T ≤ 40 10−40
40.0 < T ≤ 194.7 14.76 −2571 −7.781 × 104 4.325 × 106 −1.207 × 108 1.350 × 109
T > 194.7 18.61 −4154 1.041 × 105
CH4 all 10.51 −1110 −4341 1.035 × 105 −7.910 × 105
H2S T ≤ 127.0 12.98 −2707
T > 127.0 8.933 −726.0 −3.504 × 105 2.724 × 107 −8.582 × 108
N2 T ≤ 35.61 12.40 −80.74 −3926 6.297 × 104 −4.633 × 105 1.325 × 105
T > 35.61 8.514 −456.4 −1.987 × 104 4.800 × 105 −4.524 × 106
NH3 all 15.96 −3537 −3.310 × 104 1.742 × 106 −2.995 × 107
Ar all 10.69 −893.2 −3567 6.574 × 104 −4.280 × 105
Kr all 10.77 −1223 −8903 2.635 × 105 −4.260 × 106 3.575 × 107 −1.210 × 108
Xe all 10.698 −1737 −1.332 × 104 4.349 × 105 −7.027 × 106 4.447 × 107

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