How to create design alternatives in Openstudio?

openstudio-pat

asked 2017-01-19 10:30:40 -0600

connormcwilliams
43 ●3 http://www.connor-mcwi...

updated 2017-08-20 15:00:52 -0600

__AmirRoth__

4446 ●5 ●17 http://bleedinggreenna...

I am new to OpenStudio. I have previously done all energy models in Trane Trace 700. I am attempting to model a building for Retro-Commissioning purposes. Is there a way to copy the baseline building and then change entire system types? I have tried using the measures but I do not see a way to completely change a system.

In Trace you can create multiple alternatives and adjust systems for each. So far I have only found how to create a model of the building as it exists currently. I would like to see the financial impacts of each alternative.

I know this is probably something simple but this is my first OpenStudio project.

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answered 2017-01-19 14:27:39 -0600

TaylorRoberts

2933 ●1 ●2 ●14 http://www.group14eng.com/

Often times removing and replacing an entire HVAC system is quite difficult to get right only using measures. I would do a "save as" and then edit the HVAC systems using the apply measures now capability in OS and then manually edit whatever is necessary to get the systems exactly how you want them. You can then import these models into PAT to run everything at once if you want to.

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I think this may be my best option here. The building has an old constant volume multizone system and we are looking at completely changing it out with a modern VAV system. We will be implementing new zoning and all.

connormcwilliams ( 2017-01-19 14:38:18 -0600 )edit

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answered 2017-01-19 13:47:07 -0600

ljbrackney

3816 ●2 ●14 http://openstudio.net/

It's really just a matter of adding measures to your project that swap out systems. The AEDG HVAC measures in the BCL are a good place to start for certain building types. You can add them to a PAT project, then create design alternatives with the different options for comparison.