饱和蒸汽焓值计算公式.docx

饱和蒸汽焓值计算公式（0-200度）
一阶拟合：

LinearmodelPoly1:
f(x)=p1*x+p2
Coefficients(with95%confidencebounds):
p1=1.569(1.528,1.61)
p2=2507(2504,2511)

Goodnessoffit:
SSE:3469
R-square:0.9916
AdjustedR-square:0.9914
RMSE:8.414

LinearmodelPoly1:
f(x)=p1*x+p2
Coefficients(with95%confidencebounds):
p1=1.67(1.659,1.682)
p2=2504(2503,2504)

Goodnessoffit:
SSE:252.6
R-square:0.9994
AdjustedR-square:0.9994
RMSE:2.271

LinearmodelPoly1:
f(x)=p1*x+p2
Coefficients(with95%confidencebounds):
p1=1.777(1.765,1.789)
p2=2502(2501,2503)

Goodnessoffit:
SSE:295.6
R-square:0.9993
AdjustedR-square:0.9993
RMSE:2.456

二阶拟合：

LinearmodelPoly2:
f(x)=p1*x^2+p2*x+p3
Coefficients(with95%confidencebounds):
p1=-0.002719(-0.002911,-0.002526)
p2=2.036(2.002,2.071)
p3=2499(2498,2500)

Goodnessoffit:
SSE:195.7
R-square:0.9995
AdjustedR-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