[Equest-users] ASHRAE Answer to 22 W/Gal Primary-Secondary Pump Question

[Jason Glazer]

Paul,

Be aware that your request and my response (which ASHRAE's 
Hammerling forwarded to you) was considered an "unofficial 
interpretation".

Here is a note that I have included on unofficial 
interpretations in the past:

"NOTE: An unofficial or personal interpretation is a written 
explanation of the meaning of a specific provision of a 
standard or guideline in response to a written request. 
While every effort has been made to ensure its accuracy and 
reliability, it is advisory and provided for informational 
purposes only, and in many cases represents only one 
person’s view.  It is not intended and should not be relied 
on as an official statement of ASHRAE."

A formal interpretation request to ASHRAE 90.1 takes much 
longer and is voted on by the committee.

So please don't consider my quick note as "ASHRAE's Answer".

Jason

On 12/1/2010 11:22 AM, Paul Diglio wrote:
> FYI
>
> ----- Forwarded Message ----
> *From:* "Hammerling, Steve"
> *To:* "paul.diglio at sbcglobal.net" <paul.diglio at sbcglobal.net>
> *Sent:* Wed, December 1, 2010 9:05:08 AM
> *Subject:* FW: 90.1-2007 G3.1.3.10 Question
>
> Mr. Diglio,
>
> I received a reply from the chair of the subcommittee that
> authored Appendix G. He notes the following:
>
> */I have always interpreted that as 22 W/gpm for the entire
> pumping system so if multiple pumps are used they need to
> add up to 22 W/gpm. It is up to the modeler to decide how to
> split the 22 W/gpm up./*
>
> I hope this information is useful to you.
>
> Sincerely
>
> Steve Hammerling
>
> Technical Services Engineer
>
>  > *From:*Paul Diglio [mailto:paul.diglio at sbcglobal.net]
>
>  > *Sent:* Wednesday, November 17, 2010 10:15 AM
>
>  > *To:* ASHRAE (Internet Email)
>
>  > *Subject:* 90.1-2007 G3.1.3.10 Question
>
>  >
>
>  > Dear Sir or Madam:
>
>  >
>
>  > I have a question concerning the pumping power requirement
>
>  > in the above section.
>
>  >
>
>  > For a primary-secondary loop design, does the 22w/gpm
>
>  > include both pumps or is it 22w/gpm per pump?
>
>  >
>
>  > Thank you,
>
>  >
>
>  > Paul Diglio
>
>  > 203-415-0082
>
>  >
>
>
> ------------------------------------------------------------
> Steve Hammerling, Assistant Manager of Research & Technical
> Services
> American Society of Heating, Refrigerating and
> Air-Conditioning Engineers, Inc
> 1791 Tullie Cir. Atlanta, GA 30329
> Direct Line: 678-539-1158 Fax: 678-539-2158 eMail:
> shammerling at ashrae.org Web: www.ASHRAE.org
> <http://www.ashrae.org/>
>
> Don’t gamble when it comes to sustainable building. Attend
> ASHRAE’s 2011 Winter Conference in Las Vegas to learn more.
>
> **
>
> PPlease consider the environment before printing this e-mail.
>
>
>
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-- 
Jason Glazer, P.E., GARD Analytics, 90.1 ECB chair
Admin for onebuilding.org building performance mailing lists