主题:fortran调用refprop得到的焓熵与nist中查得的不同
我用fortran调用refprop,用的subroutine TPFLSH (t,p,z,D,Dl,Dv,x,y,q,e,h,s,cv,cp,w,ierr,herr),将计算后得到的焓除以摩尔质量wm=WMOL(z),得到kJ/kg,但与安装的nist软件测得值对比。单工质两者相同,多组分工质两者就有大的差异比如差17kJ/kg。多工质为甲烷和乙烷,摩尔分数为0.93和0.07。求帮助。
program ex
implicit none
integer,parameter ::ncomp=2
character(len=255) ::hfiles(ncomp),hfmix,herr
character(len=3) ::hrf
integer ::ierr
real(kind=8) ::t,p,D,Dl,Dv,q,e,h,s,cv,cp,w
real(kind=8) ::z(ncomp),x(ncomp),y(ncomp)
real(kind=8) ::wm
real(kind=8),external ::WMOL
hfiles(1)="fluids\METHANE.FLD"
hfiles(2)="fluids\ETHANE.FLD"
hfmix="fluids\hmx.bnc"
hrf="DEF"
t=352.0
p=15000.0
z=(/0.93,0.07/)
call SETUP(ncomp,hfiles,hfmix,hrf,ierr,herr)
if(ierr .ne. 0)then
write(*,*)herr
end if
call TPFLSH(t,p,z,D,Dl,Dv,x,y,q,e,h,s,cv,cp,w,ierr,herr)
if(ierr .ne. 0)then
write(*,*)herr
end if
wm=WMOL(z)
write(*,*)"比焓:",h,"J/mol"
write(*,*)"比熵:",s,"J/(mol.K)"
write(*,*)"摩尔质量:",wm,'g/mol'
end program