Re: [TRNSYS-users] Optimization

[Jeff Thornton <thornton@xxxxxxxxxxxx>]

At 04:27 PM 11/5/2004 +1100, you wrote:

> Is it possible to import optimization subroutine developed in fortran to 
> ISSiBAT envionment like other user modeled subroutines. Or otherwise, is 
> there any modules available for optimization in TRNSYS, if so from where 
> to get one. Please help.

Perfect timing on this question as we have just finished readying TRNOPT 
for Version 16 of TRNSYS.  TRNOPT is an interface program that allows 
TRNSYS users to quickly and easily utilize the GENOPT optimization tool to 
optimize combinations of continuous and discrete variables.  GenOpt is a 
powerful optimization algorithm written by LBNL that we have used 
successfully for the past couple of years in our studies.  However, getting 
it to work properly with TRNSYS can be pretty tricky.  We're written TRNOPT 
to overcome this barrier.  TRNOPT scans your TRNSYS input file (either 
outside of or from within the new Simulation Studio (IISiBat) using the new 
PlugIn feature) and allows uses to choose TRNSYS variables to be used in 
the optimization process.  The user specifies the initial guess for the 
variables, the range of the variables, the optimization method, and the 
error function (either a TRNSYS equation or output from a component).  The 
TRNOPT program then creates the required template and configuration files, 
calls GenOpt and the optimization process is begun.  I've attached a few 
screen captures from the program and from the included example.

TRNOPT is available from TESS as an add-on library for TRNSYS 16; we now 
have 12 of these libraries of component models with complete technical 
documentation available. Some information on our libraries may be found on 
the TRNSYS.com web site.  Otherwise we can send you a PDF document 
describing each of the libraries and the models they contain.

With kindest regards,

Jeff

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Thermal Energy System Specialists (TESS)
Jeff Thornton                                   2916 Marketplace Drive
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Attachment: TRNOPT Screen Capture.jpg
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Attachment: GenOpt Screen Capture.jpg
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Attachment: Example in the Studio.jpg
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