hysys condenser...dynamic simulation

[marchese85]

Hello !!!!!
I'm working on a dynamic simulation in hysys (batch distillation) ... I'm having a big problem with a condenser. The flow of vapour is about 250 kg / h. I've set a heat exchanger volume equal to 0.08 m3 . When I start the simulation the mass balances are correct (although with some inaccuracy), but the compositions of the incoming steam and condensate (fraction of steam is zero) don't correct. How do I solve the problem ????.
I tried to reduce the step size and modify the execution rate of composition and flash calculation, but without results.
how can i do????...i'm desperate...please help me!!!!!
thanks in advance!!!!
p.s. sorry for my bad english

[naapranam]

have u tried with steady state simulation...did the result match? just check the fluid package that u have selected....take a steady state system and do it hysys....then u go for the dynamic simulation