[Equest-users] infiltration rate

[CleanTech Analytics]

When doing blower door tests I have found ACH 2 or 3 to be commonplace.


*Jeremiah D. Crossett*
*CleanTech Analytics*
*503-688-8951*
*www.cleantechanalytics.com* <http://www.cleantechanalytics.com>


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On Tue, Apr 24, 2012 at 10:07 AM, Nick Caton <ncaton at smithboucher.com>wrote:

>  For an “old townhouse,” I think you may want to reference the ASHRAE
> fundamentals table for residential constructions (Fundamentals 2001, Ch28,
> Table 7)…  they surveyed a bunch of homes that were up to a few decades old
> to come up with a table that shows varying ACH rates, for “tight” to
> “loose” construction, varying with the OADT.  *The tightest value given
> is 0.41*.  Again this isn’t a standard but rather based on real-world
> measurements.****
>
> ** **
>
> A very good (and long) discussion thread is in the equest-users archives
> discussing alternate infiltration resources as well:  thread title was
> “Basic stuff – Infiltration”****
>
> ** **
>
> ~Nick****
>
> ** **
>
> [image: cid:489575314 at 22072009-0ABB]**
>
> * *
>
> *NICK CATON, P.E.***
>
> SENIOR ENGINEER****
>
> ** **
>
> Smith & Boucher Engineers****
>
> 25501 west valley parkway, suite 200****
>
> olathe, ks 66061****
>
> direct 913.344.0036****
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> fax 913.345.0617****
>
> www.smithboucher.com* *****
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> ** **
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *CleanTech
> Analytics
> *Sent:* Tuesday, April 24, 2012 2:32 AM
> *To:* xiaoyang shi
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] infiltration rate****
>
> ** **
>
> .35 ACH is the BPI standard, any tighter and mechanical ventilation is
> required..****
>
>
> ****
>
> *Jeremiah D. Crossett*****
>
> *CleanTech Analytics*****
>
> *503-688-8951*****
>
> *www.cleantechanalytics.com* <http://www.cleantechanalytics.com>****
>
> ** **
>
> ****
>
> *This document may contain valuable information proprietary to CleanTech
> Analytics which is private and confidential. It may not be shared, copied,
> stored or transmitted in any form without the prior written consent of
> CleanTech Analytics***
>
> ** **
>
> ** **
>
> On Mon, Apr 23, 2012 at 11:54 PM, xiaoyang shi <xs2144 at gmail.com> wrote:**
> **
>
> Hi guys,****
>
> ** **
>
> Could I ask what is the about infiltration rate of old townhouse in NYC?
> Where could I find the standard?****
>
> ** **
>
> 0.2cfm/ft2? Is it correct?****
>
> ** **
>
> Thanks****
>
> ** **
>
> Yang****
>
>
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