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Real gas NIST model problem

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Old   September 18, 2015, 18:35
Default Real gas NIST model problem
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Hello,

I am trying to run a simulation with real gas model from NIST using r134a as working fluid. When I try to initialisate or run the simulation I get the next message:

Primitive Error at Node 0: REFPROP_error (203) from function: tprho (density)
[TPRHO error 203] vapor iteration has not converged for T= 257.82 K, p =0.55582 MPA, rho (last guess) =0.39299 mol/L, x (mol frac) = 1.0000

I do not know how to make the Refprop function to converge. Anybody could give some advice about how to deal with it?

Best regards.
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