Coordination of the values of thermodynamic properties at the borders of areas

Divergence of the values of thermodynamic properties, calculated under the main functions for areas showed in table. 1. Divergence of pressure, temperature and Gibb's energy at saturation line showed in table. 2, where marked point with Ò = 623,15 K, where functions for three areas are crossing.

Table # 1. Divergence of the values of thermodynamic properties at the borders of areas

Quantity, õ Border of areas # 1, 3 Border of areas # 2, 3 Border of areas # 2, 5
|Δx|max σ*1 |Δx|max σ |Δx|max σ
υ, % 0,004 0,002 0,018 0,007 0,002 0,001
h, kJ/kg 0,031 0,014 0,134 0,073 0,020 0,012
ÑÐ, % 0,195 0,058 0,353 0,169 0,081 0,048
s, J/(kg·K) 0,042 0,022 0,177 0,094 0,042 0,025
g, kJ/kg 0,005 0,005 0,005 0,003 0,026 0,021
w, % 0,299 0,087 0,403 0,073 0,021 0,009

Table # 2. Divergence of the values of thermodynamic properties at the saturation line

Quantity, õ T1 ≤ T ≤ 623.15 K 623.15 K ≤ T ≤ Têð Ò = 623,15 Ê
|Δx|max σ*2 |Δx|max σ
PS, % 0,0069 0,0033 0,0026 0,0015 0,0041
ÒS, % 0,0006 0,0003 0,0003 0,0002 0,0006
g, kJ/kg 0,012 0,006 0,002 0,001 0,005

 


*1 Mean square deviation σ calculated for 3000 points, uniformly distribute along two parts of saturation line

*2 Mean square deviation σ calculated for 3000 points, uniformly distribute along two parts of saturation line