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Minimum air change rate with VRF and DOAS

Hello, I have a project with minimum outdoor airflow and minimum supply airflow requirements. I think I have the outdoor airflow inputs squared away, but am stuck on how to capture the minimum supply air requirements. This post suggests defining the minimum supply airflow requirement at the terminal box; however, with VRFs + DOAS, I am using the AirTerminal:SingleDuct:Mixer, which does not have an input for minimum flow rate. At the VRF terminal, I only see the inputs listed below, none which are minimum flow rates. Any ideas on how I can model this or is there something I have overlooked? Thanks!

Cooling Supply Air Flow Rate {m3/s} No Cooling Supply Air Flow Rate {m3/s} Heating Supply Air Flow Rate {m3/s} No Heating Supply Air Flow Rate {m3/s}

ptruong's avatar
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ptruong
asked 2017-08-29 13:21:19 -0500
__AmirRoth__'s avatar
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__AmirRoth__
updated 2017-08-29 16:10:53 -0500
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anyone have any suggestions on this issue?

ptruong's avatar ptruong (2017-09-05 07:41:26 -0500) edit

thanks, i will give those a try. do you know if these are minimums?

ptruong's avatar ptruong (2017-09-05 08:01:03 -0500) edit
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The no flow inputs are used when no cooling or heating is needed. Try using these inputs for minimum air flow requirements.

No Cooling Supply Air Flow Rate {m3/s} No Heating Supply Air Flow Rate {m3/s}

rraustad's avatar
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rraustad
answered 2017-09-05 07:52:09 -0500
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