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Which is the proper "ZoneInfiltration:DesignFlowRate" value, with ideal air loads?

asked 2015-03-24 09:58:21 -0600

Antop gravatar image

updated 2015-07-23 02:58:10 -0600

I am setting two models without HVAC system (residential and office). I am using the ideal air load.

  • In your opinion, which is the proper value of space infiltration (in term of ACH) I have to use?
  • With ideal loads is there already mechanical ventilation?
  • Do I have to consider a combination between mechanical ventilation and infiltration?
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I believe that DesignFlowRates can be defined independently of the IdealAirLoads system. The IdealAirLoads system is driven by thermostats and should take into account any infiltration that occurs.

OS-user-AT gravatar imageOS-user-AT ( 2015-07-17 13:06:08 -0600 )edit

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answered 2015-07-22 22:05:58 -0600

hongtz gravatar image

updated 2015-07-23 03:51:57 -0600

Infiltration varies significantly among buildings and time. PNNL report PNNL-18898, Infiltration Modeling Guidelines for Commercial Building Energy Analysis (pdf), is a good reference.

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Asked: 2015-03-24 09:58:21 -0600

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Last updated: Jul 23 '15