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How to model DOAS w/ DCV in Openstudio?

asked 2017-01-17 11:01:53 -0500

Yuki
101 ●1

updated 2017-05-08 15:52:32 -0500

__AmirRoth__

4436 ●5 ●17 http://bleedinggreenna...

I am modeling a building that uses DOAS w/ DCV and active chilled beams. The ACB is constant volume and DOAS is variable volume, so I model ACB using FCUs. Now the question is how can I implement DCV in DOAS? I turn the DCV on in the control and the outdoor air seems correct. But the DOAS supply air is not 100% OA. Where can I set the DOAS to be 100% OA while the OA cfm might vary?

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answered 2017-01-17 18:35:25 -0500

Anoop H
61 ●1

In the OS:Controller:OutdoorAir object of the outside air (DOAS) loop, check the 'Minimum Fraction of Outdoor Air Schedule Name' and 'Maximum Fraction of Outdoor Air Schedule Name'. Make sure they are not following any schedule.

Some other miscellaneous DOAS tips

At the terminal unit level, set the 'control for outdoor' to 'Yes'
The top of your DOAS air loop should have 3 tabs. 'Layout', 'Control' and 'Grid'. Go to the 'Control' tab and make sure all the schedules are correctly assigned

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Asked: 2017-01-17 11:01:53 -0500

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Last updated: Jan 19 '17

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How to model DOAS w/ DCV in Openstudio? edit