Re: [EnergyPlus_Support] VAV max flow rate for heating

[Fred Buhl <wfbuhl@xxxxxxx>]

Yes: all input in System Sizing and Zone Sizing is used for sizing calcs only. It
doesn't affect operation during the actual simulation. As long as you have
VAV terminal units in your system with a minimum flow ratio less than 1.0 you will get
VAV action.

Fred Buhl

Danny Bishop wrote:

I do want it to run with variable volume. If I do this will it run variable volume?

Thanks

Danny

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Fred Buhl
Sent: Tuesday, 25 November 2008 4:26 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] VAV max flow rate for heating

 

In System Sizing, set "minimum system air flow ratio" to 1.0.

In release 3.0, this would be Sizing:System, "Minimum System Air Flow
Ratio".

Fred Buhl

bish.dj61 wrote:
> hi All
> For some reason I am getting a max air flow rate of the turn down ratio
> x the summer peak air flow rate when I use the "design day" method to
> size my VAV system for heating air flow rate. Shouldn't the max flow
> rate be the 100% flow rather than the fully turned down flow?
>
> cheers
> Danny
>
>
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