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Re: [EnergyPlus_Support] Modeling A Fresh Air System based only on Central Extract Fans

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Subject: Re: [EnergyPlus_Support] Modeling A Fresh Air System based only on Central Extract Fans
From: "Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Date: Mon, 11 Nov 2019 12:33:27 +0530
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Hi,

Another optionÂ could be trying out 'ZoneVentilation:DesignFlowRate' and see how it serves your purpose. It has Intake, Exhaust, Balanced and Natural Ventilation type of ventilation system.Â

There might be some other alternative options but I don't have any such past experiences.Â

Best,

On Mon, Nov 11, 2019 at 12:06 PM hisham.rashrash@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Â

Hi,
I am looking for ideas on how to model a fresh air system that is based only on rooftop central extract fans in a residential building in Moscow, Russia, so that the fresh air is induced in the form of infiltration because of the negative pressure.
So far, I have tried modeling it as infiltration "ZoneInfiltration:DesignFlowRate", but thenÂ for assessing the passive measures performance,Â I could not get the heat removal rate (due to infiltration) separately from fresh air; therefore, I re-modeled it as PTACs with coils always off and fans with zero power, and modeled theÂ energy consumptionÂ of theÂ central extract fan using an "Exterior:FuelEquipment" object.
Are there any better ideas for modeling such system?

Thank you.

Best regards,
Hisham

Javed Iqbal, LEED AP, CEA

Sr. Energy AnalystÂ

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Posted by: Javed Iqbal <eee.javed@xxxxxxxxx>

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- [EnergyPlus_Support] Modeling A Fresh Air System based only on Central Extract Fans
  - From: hisham.rashrash@xxxxxxxxx [EnergyPlus_Support]

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