Re: [EnergyPlus_Support] Specify two hot water systems, use only one

[Sankar Padhmanabhan <sankar.padhmanabhan@xxxxxxxxxxx>]

Hi,
Yes it is doable, though not without some external programming effort from your part. For my MS thesis I had to do something similar to yours with hybrid GSHP. I had to work with 6 different idf and select one of them based on the optimization variable input. Are you using GenOpt? Here is what I did:

I wrote an external program which does following things:
  - Read the variables that optimization program wrote fro next run
  - Depending on the variables determine which file to run?
  - Once the file is determined run a batch file which renames the selected file to in.idf, chane the weather file also if required and runs the E+ exe.
  - After E+ finishes run, post process the eso.

The optimization program must use this external program for function evaluation purposes and not E+.

Hope I am clear. My MS thesis is available here:

http://www.hvac.okstate.edu/research/Documents/Sankar Thesis.pdf

Other students in our group have done similar work with other simulation environments like HVACSim+. You can get their thesis also on our website http://www.hvac.okstate.edu/theses.html

Thanks
Sankar

On 3/1/2010 12:59 PM, roberturban4848 wrote:

 

I am running an optimization problem in which I change a variety of building parameters. One of my variables is the type of hot water system. Unfortunately, a solar collector based system and a conventional system have vastly different IDF structures. Ideally, I would like to be able to physically have both in the IDF file, and "call" which one I want to use depending on what the optimization algorithm decides. That way I don't have to change the IDF file drastically when I go from one system to the other.

Is that possible?

--
Sankar Padhmanabhan
Graduate Research Assistant
Ph.D Candidate
Mechanical & Aerospace Engg
Oklahoma State University,
Stillwater, OK-74078
Ph:405-744-2410 (O)

__._,_.___

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___