[TRNSYS-users] Infiltration clarification

[jeannieboef]

The 50 Pa rating is based on the blower door pressure test. Actual  
pressure differences under normal conditions tend to avarage at about  
1-2 Pa. Maybe you can find a CEN norm that defines a good pressure dP  
to assume for annual energy simulations. Or check the mathematical  
referance for the other infiltration types, because they often also  
reference standards and norms. If I find anything, I'll post it.

Sent from my iPhone

On 28.07.2012, at 18:34, Marcus <jones.0bj3 at gmail.com> wrote:

> Say I want to simulate a passive house in TRNSYS using type 56. For  
> an airtight building shell, passive house infiltration should be say 
>  ≤ 0.6 ACH @ 50 pascal pressure.
> (http://www.passivehouse.us/passiveHouse/PassiveHouseInfo.html)
>
> The type 56 TRNBLD units for infiltration; are they at static or at  
> 50 pa? If they are at static, I need to divide 0.6 by ~ 20 (estimate  
> from Sherman 1987), so I input Airchange = 0.03 1/hr. Correct?
>
> Cheers,
>
> Marcus
> -- 
> Marcus Jones,  M.Sc., LEED®AP BD+C
> Freelance energy consultant
> Vienna, Austria
>
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