饱和蒸汽焓值计算公式

饱和蒸汽焓值计算公式（0-200度）一阶拟合：

Linear model Poly1:

f(x) = p1*x + p2

Coefficients (with 95% confidence bounds): p1 = 1.569 (1.528, 1.61) p2 = 2507 (2504, 2511)

Goodness of fit:

SSE: 3469

R-square: 0.9916

Adjusted R-square: 0.9914

RMSE: 8.414

Linear model Poly1:

f(x) = p1*x + p2

Coefficients (with 95% confidence bounds): p1 = 1.67 (1.659, 1.682) p2 = 2504 (2503, 2504)

Goodness of fit:

SSE: 252.6

R-square: 0.9994

Adjusted R-square: 0.9994

RMSE: 2.271

Linear model Poly1:

f(x) = p1*x + p2

Coefficients (with 95% confidence bounds): p1 = 1.777 (1.765, 1.789) p2 = 2502 (2501, 2503)

Goodness of fit:

SSE: 295.6

R-square: 0.9993

Adjusted R-square: 0.9993

RMSE: 2.456

二阶拟合：

Linear model Poly2:

f(x) = p1*x^2 + p2*x + p3

Coefficients (with 95% confidence bounds):

p1 = -0.002719 (-0.002911, -0.002526) p2 = 2.036 (2.002, 2.071) p3 = 2499 (2498, 2500)

Goodness of fit:

SSE: 195.7

R-square: 0.9995

Adjusted R-square: 0.9995

RMSE: 2.019

过热蒸汽焓值计算：

压力：1.0-4.6MP 温度：500-580

压力：2.5-4.7MP 温度：280-390

压力：0.65-1.40MP 温度：260-320

有一个不分区的近似公式~我还没验证