3 replies to this topic

[Engshimi]

hi there,

i want to optimize a distillation column with variation of inlet feed stage in matlab environment,

i invoke hysys case in matlab with "actxserver" , for example 

to get the Temperature of colum : 

 

HysysApp = actxserver ('Hysys.Application');

simulation = HysysApp.simulationCase.Open('C:\Users\...');

Tem = simulation.Flowsheet.Operations.Item('T-100').ColumnFlowsheet.TemperaturesValue;

 

but anybody know how i can get the Feed stage  and change the value of it?!!!

[sepehrnik]

hi there,

i want to optimize a distillation column with variation of inlet feed stage in matlab environment,

i invoke hysys case in matlab with "actxserver" , for example 

to get the Temperature of colum : 

 

HysysApp = actxserver ('Hysys.Application');

simulation = HysysApp.simulationCase.Open('C:\Users\...');

Tem = simulation.Flowsheet.Operations.Item('T-100').ColumnFlowsheet.TemperaturesValue;

 

but anybody know how i can get the Feed stage  and change the value of it?!!!

Hi Engshimi
do you know how to read the units of our streams or blocks using MatLab?
I want to change my component flowrate but when I read it in matlab, it shows me a completely different number which i am sure is in some other units. so I want to know what is that unit and is that possible to change it?
and concerning your problem I think u have to reacall what you want by using spreadsheet and cell in hysys and then recalling your variable in matlab

Edited by sepehrnik, 17 March 2017 - 05:18 AM.

[twell]

I would recommend to use the internal optimization procedure,

to optimize a column design (with external applications such as Matlab, Mathcad etc.)  the minimizer in Matlab must call the procedure for solving the column *many* times and you need a fast and stable interface,

an alternative solution could be to use a process library (I have Prode Properties) which links with Mathcad, Matlab etc. and it provides a fast solution for distillation columns.

[Engshimi]

hi sepehrnik , twell

 

Hi Engshimi
do you know how to read the units of our streams or blocks using MatLab?
I want to change my component flowrate but when I read it in matlab, it shows me a completely different number which i am sure is in some other units. so I want to know what is that unit and is that possible to change it?
and concerning your problem I think u have to reacall what you want by using spreadsheet and cell in hysys and then recalling your variable in matlab

w how i can get the Feed stage  and change the value of it?!!!

 

 

The Value property returns the actual value in SI units,

The example below, shows how to get a stream property value in a specific unit using the RealVariable method GetValue.

 

... Feed.Temperature.GetValue('F')

 

I would recommend to use the internal optimization procedure,

to optimize a column design (with external applications such as Matlab, Mathcad etc.)  the minimizer in Matlab must call the procedure for solving the column *many* times and you need a fast and stable interface,

an alternative solution could be to use a process library (I have Prode Properties) which links with Mathcad, Matlab etc. and it provides a fast solution for distillation columns.

 

Feed Stage can not be added to Spreed sheet , Case study and Optimization tools as a variable