Steam Properties

M.M. Yovanovich

STEAMPROPS2.MWS

Properties of saturated water vapor (steam).

Properties obtained from Table A.4 of Incropera and DeWitt. The temperature range is kelvin. Simple second order fits of thermophysical properties.

> restart:

Correlation equation.

> k:=
T-> .1381515011e-7*T^2+.6634994575e-4*T-.2673622983e-2;
rho:=
T->.1183296562e-5*T^2-.2120532826e-2*T+1.212341591;
cp:=
T->1557139/974572500*T^2-51563419/32485750*T+934952432/389829;mu:=
T-> .1164692132e-13*T^2+.3606363036e-7*T-.9892226430e-6;
nu:=
T->.1642094445e-9*T^2-.3580788653e-8*T-.5947777730e-6;
alpha:=
T->.1257836049e-9*T^2+.4144281570e-7*T-.1337400871e-4;
Pr:=
T-> .8473108031e-6*T^2-.1090738047e-2*T+1.340425081;

Calculate steam properties at given temperature.

> T:= 650:

> steamprops:= evalf([T, k=k(T), rho=rho(T), cp=cp(T), mu=mu(T), nu=nu(T), alpha=alpha(T), Pr=Pr(T)], 4);

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