demo-python

Python

Install SEUIF97 library manually

Put the shared library in the default Lib path of OS or the programming language,

then, copy seuif97.py in the current folder to a default path of Python's lib.

Windows(x86/64)

If you have installed Python3.8 in the C:\Python38, copy to

   C:\Python38\Lib 

Linux(x64/aarch64)

If you have installed Python3.8

$sudo cp seuif97.py /usr/lib/python3.8/

Functions

The two type functions are provided in the seuif97.py:

• ??2?(in1,in2) , e.g: h=pt2h(p,t)

  • first,second input parameters: the input properties(double)
  • the return: the calculated property value(double)

• ??(in1,in2,propertyID), e.g:h=pt(p,t,4), the propertyID h is 4

  • first,second input parameters: the input properties(double)
  • third input parameter: the propertyID of the calculated property(int, 0-29), see Properties in libseuif97
  • the return: the calculated property value(double)

import seuif97

p, t=16.10,535.10

# ??2?(in1,in2)
h=seuif97.pt2h(p,t)
s=seuif97.pt2s(p,t)
v=seuif97.pt2v(p,t)
print("(p,t),h,s,v:",
      "{:>.2f}\t {:>.2f}\t {:>.2f}\t {:>.3f}\t {:>.4f}".format(p, t, h, s, v))

# ??(in1,in2,propertyid)
t = seuif97.ph(p, h, 1)
s = seuif97.ph(p, h, 5)
v = seuif97.ph(p, h, 3)
print("(p,h),t,s,v:",
      "{:>.2f}\t {:>.2f}\t {:>.2f}\t {:>.3f}\t {:>.4f}".format(p, h, t, s, v))  

Diagram Examples

• Diagram T-S

• H-S(Mollier) Diagram of Steam Turbine Expansion