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[alpermec]

hi

ı am working on a master these about solar organic rankine cycle

ı am using aspen plus software.

when ı model a simulation, there is an error in the heat exchanger

ERROR

   OUTLET FLASH FAILED TO CONVERGE.

 ERROR

   FLASH CALCULATION HAS DRIVEN THE TEMPERATURE DOWN TO THE LOWER LIMIT OF

   120.0000  DEGREES K., BUT ENTHALPY BALANCE IS STILL NOT SATISFIED.  HEAT

   DUTY SPECIFICATIONS MAY BE INFEASIBLE.  ERROR IN FLASH CALCULATIONS FOR

   FEED STREAM FLASH.

can you help me???????????*

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