Template:Evaporator Results Tab

The page contains the results and the user may enable the Heat Exchanger function and set the type of Heat Exchanger (Internal or External) and the flow to the Heat Exchanger.

Tag (Long/Short)	Input / Calc	Description/Calculated Variables / Options
Operating Conditions
TemperatureIn / Ti	Calc	The temperature of the combined Feed stream to the Evaporator.
PressureIn / Pi	Calc	The pressure of the combined Feed stream to the Evaporator.
VapFlashed.MassFlow / Qm	Calc	The quantity of flashed vapour.
LiqChange.MassFlow / Qm	Calc
BPE	Calc	The Boiling Point Elevation used in the Flash calculations in the Evaporator.
FlashT	Calc	The final temperature (the Flash Temperature) in the Evaporator.
FlashP	Calc	The final pressure (the Flash Pressure) in the Evaporator.
Flash Train Macro Model These extra fields are only visible if the unit is part of a Flash Train.
VapourMassFlow / VQm	Calc	The mass flow of flashed vapour.
PressureReqd / P_Reqd	Calc	The required flash pressure calculated by the Flash Train.
TotalPressChange / TotaldP	Calc	The total pressure change calculated by the Flash Train.
FeedSatP	Calc	The saturation pressure of the feed.
FlashTrain	Display	A unique tag assigned to the flash train by SysCAD. Each unit in the flash train will have the same tag in this block.
FlashTearBlock	Display	Displays the name of the tear block that is part of the Flash Train.
FlashTrainEqp	List	This contains a list of all of the equipment tags in this flash train. the list might be as follows: FT_EVAPORATOR_2_HX FT_EVAPORATOR_1_Evap
PAdvBase	Input	Additional damping or acceleration for calculated pressure change (DP) for the iteration. DP = DP * PAdvBase when PAdvExtra=0.
PAdvExtra	Input	Additional damping or acceleration for calculated pressure change (DP) for the iteration. DP = DP * (PAdvBase + PAdvExtra*(VQmReqd-VQm)/Max(VQmReqd,VQm)).
Summary of input and output streams The following tags are shown for Feed, Vapour, Overflow (OF) (if connected) and Product (Prod) streams:
Temperature / T	Display	The temperature of the stream.
MassFlow / Qm	Display	The Mass flowrate of the stream.
SolidMassFlow / SQm	Display	The solids Mass Flow of the stream.
SolidFrac / Sf	Display	The solids Mass fraction of the stream.
Results
BFeed.Temperature / T	Calc	The temperature of the Feed to the Evaporator evaluation block.
BFeed.Pressure / P	Calc	The Pressure used in the calculations in the Evaporator evaluation block. If the user has ticked the 'UseFeedP' then this will be the feed pressure to the Evaporator.
BFeed.MassFlow / Qm	Calc	The mass flow of Feed to the Evaporator evaluation block.
BFeed.SolidMassFlow / SQm	Calc	The mass flow of solids in the Feed to the Evaporator evaluation block.
BFeed.SolidFrac / Sf	Calc	The mass fraction of solids in the Feed to the Evaporator evaluation block.
Body.SolidsYield	Calc	(Mass flow of solids in the Product) - (Mass flow of solids in the Feed)
SolidsYield	Calc	(Mass flow of solids in the Product) - (Mass flow of solids in the Feed)
Evaporator to External Heat Exchanger / Embedded Heater / Embedded Cooler These extra fields are only visible if one of the Heat Exchanger options has been chosen on the first tab page.
HXOut.MassFlow / Qm	Calc	The mass flow to the specified Heat Exchanger.
HXOut.EachHeaterQm	Calc	Only visible if Embedded Heater or Embedded Cooler option is chosen. The mass flow to each Heater/Cooler.
HXOut.VolFlow / Qv	Calc	The volume flow to the specified Heat Exchanger.
HXOut.EachHeaterQv	Calc	Only visible if Embedded Heater or Embedded Cooler option is chosen. The volume flow to each Heater/Cooler.
HXOut.SolidFrac / Sf	Calc	The mass fraction of solids in the Feed to the specified Heat Exchanger.
HXOut.Temperature / T	Calc	The temperature of the stream to the specified Heat Exchanger.
Embedded Heater Recycle Loop convergence These extra fields are only visible if one of the Embedded Heat Exchanger options has been chosen on the first tab page.
RecycleConvergeMethod	FullStream	User can select to solve the recycle loop using Full stream data (loop has to solve and converge all mass and energy terms.)
	Stream Mass Only	User can select to solve the recycle loop using mass only. Loop will be solved when mass is converged, ignoring energy.
	Duty	User can select to solve the recycle loop using energy only. Duty from "shell" side of heat exchanger is added directly to the feed (recycle mass flow is not actually added). Loop will be solved when duty is matched, ignoring mass balance.
MaxIterations / MaxIter (Global)	Input	The maximum number of iterations allowed within the recycle solver loop. Only shown for Stream Recycle Converge Methods.
IterSteps	Calc	The number of iteration used in the current step to solve the recycle loop. Only shown for Stream Recycle Converge Methods.
IterLastStep	Calc	The number of iteration used in the last step to solve the recycle loop. Only shown for Stream Recycle Converge Methods.
IterMaxInAStep	Calc	The maximum number of iterations (in a step) used to solve the recycle loop. Only shown for Stream Recycle Converge Methods.
IterTotal	Calc	The total number of iterations used to solve the recycle loop. Only shown for Stream Recycle Converge Methods.
FeedMaxDuty	Calc	The maximum amount of Duty that can be added to feed before temperature exceeds water critical temperature. Only shown for Duty Recycle Converge Method.
IterDuty	Calc	The number of iterations to apply duty and flash. When this is greater then 1 then the Duty from the condensing steam is applied in iterations, the values displayed on the VLE page reflect this. Only shown for Duty Recycle Converge Method.