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RE: [EnergyPlus_Support] What's the difference between the ZoneInfiltration:DesignFlowRate and the ZoneVentilation:DesignFlowRate object?

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Subject: RE: [EnergyPlus_Support] What's the difference between the ZoneInfiltration:DesignFlowRate and the ZoneVentilation:DesignFlowRate object?
From: Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 8 Oct 2013 07:46:41 -0500
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Thread-topic: [EnergyPlus_Support] What's the difference between the ZoneInfiltration:DesignFlowRate and the ZoneVentilation:DesignFlowRate object?


Dear Joe,

A few thoughts:

·         Infiltration comes directly from outdoors with no conditioning.  I have not used the ventilation object, but it appears to do the same, except oriented to natural ventilation.  If you want outdoor air with no conditioning, fine.  I generally think of ?ventilation? as conditioned air, however.

·         To make a constant flow rate, you would use the ?Design Flow Rate? in the either object, with coefficients as you describe

·         I?m not sure why you want to set the rate to 1.0 m3/s.  It seems that?s going to vary by zone and would not likely be 1.0.



James V Dirkes II, PE, BEMP, LEED AP
<http://www.buildingperformanceteam.com/>www.buildingperformanceteam.com
Energy Analysis, Commissioning & Training Services
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Follow-Ups:
- Re: [EnergyPlus_Support] What's the difference between the ZoneInfiltration:DesignFlowRate and the ZoneVentilation:DesignFlowRate object?
  - From: Joe Huang

References:
- [EnergyPlus_Support] Using AFN for windows, but with default infiltration
  - From: allinson_louis
- RE: [EnergyPlus_Support] Using AFN for windows, but with default infiltration
  - From: Lixing Gu
- [EnergyPlus_Support] What's the difference between the ZoneInfiltration:DesignFlowRate and the ZoneVentilation:DesignFlowRate object?
  - From: Joe Huang

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