[Bldg-sim] 90.1 and infiltration/air-tightness?

[Cramer Silkworth]

Nick,

Section 5.4.3, Air Leakage, states what parts of the envelope must be
caulked/weatherstripped/etc "to minimize air leakage". It also mentions
that windows & doors must be tested according to NFRC 400, and gives
specific limits of leakage for swinging & revolving doors. But, no
overall number for total infiltration rates.

It sounds to me like infiltration must be the same in both the baseline
and proposed building - appendix G makes no mention of it, and the
entire Performance Rating method requires Section 5.4 to be met, so I
interpret that to mean keeping infil. constant across the models.


J. Cramer Silkworth 
silkworth at transsolar.com 
+49 0711-67976-182 
Transsolar Energietechnik GmbH 
http://www.transsolar.com 
Stuttgart - Munich - New York 

Climate Engineering: Technologies for energy-efficiency and user comfort
in buildings.
Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart, Germany

Amtsgericht Stuttgart -  HRB 23347 / USt-IdNr.: 99073/00911

Partners: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys.
Stefan Holst 




-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Nick
Doylend
Sent: Tuesday, February 12, 2008 9:58 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] 90.1 and infiltration/air-tightness?

Hi, I'm wondering if 90.1 makes any stipulations regarding building air
infiltration, for example can there be a difference between proposed
design and energy budget building?  I can't seem to find any reference
to facade air tightness but the standard is a pretty dense document to
wade though.  Is there a more easily digested summary available
anywhere?

Thanks,

Nick
_______________________________________________
Bldg-sim mailing list
http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
To unsubscribe from this mailing list send  a blank message to
BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG