[Bldg-sim] Hot water pumps (baseline)

varun kulkarni seldomvarun at gmail.com
Thu Mar 17 09:05:12 PDT 2011


Thanks Andrew,

I did read this and we are according to this i have to change my system type
to 7 from system 5 as I have district heating and cooling.
But I am worried about the hot water pump W/gpm specifically.
Should I just or Can I just go ahead and use 19 W/gpm.

On Thu, Mar 17, 2011 at 11:50 AM, Andrew Craig <AndrewC at interfaceeng.com>wrote:

>  Varun---
>
>
>
> If you have purchased hot water in the proposed building and the project is
> pursuing LEED certification (which I assume it is) you need to use USGBC’s
> *Treatment of District or Campus Thermal Energy in LEED V2 and LEED 2009 –
> Design & Construction.  *I’ve attached it as a reference.  You basically
> have two options: 1.) building stand-alone scenario where only the
> downstream equipment is modeled and hot water is metered/purchased, or; 2.)
> aggregate building/DES scenario where the upstream equipment with its
> efficiencies or lack thereof are modeled in the proposed design against
> 90.1.
>
>
>
> Regards,
>
>
>
> *Andrew Craig **PE, LEED AP
> *Project Mechanical Engineer
>
> *INTERFACE ENGINEERING
> email *andrewc at interfaceeng.com
> *direct *503.382.2696
>
> *www.interfaceeng.com
> *
>
>
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *varun kulkarni
> *Sent:* Thursday, March 17, 2011 8:02 AM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Hot water pumps (baseline)
>
>
>
> Hello everyone,
>
>
>
> User's manual for ASHRAE 90.1 says "For systems 1,5 and 7 (except for
> purchased hot water or steam), the baseline building design hot water pump
> power shall be 19 W/gpm". (page G-30)
>
>
>
> I am confused if I have to use the proposed pumps in case I have purchased
> hot water.
>
>
>
> The chilled water pumps are always (as i understand) modeled at 22 W/gpm.
>
>
>
> --
>
> Thanks and Best Regards,
>
>
>
> Sincerely,
>
> Varun Kulkarni , M.S. , EIT
>
> RMF Engineering
>
> 5520, Research Park Drive, Suite 300
>
> Baltimore, MD - 21228
>
>
>
> Office : 410-576-0505 ext. 5352
>
> Mobile: (+1)405-385-1928
>
>
>
> Note: Please do not print, unless required.
>
>
>
>
>



-- 

Thanks and Best Regards,



Sincerely,

Varun Kulkarni , M.S. , EIT

RMF Engineering

5520, Research Park Drive, Suite 300

Baltimore, MD - 21228



Office : 410-576-0505 ext. 5352

Mobile: (+1)405-385-1928



Note: Please do not print, unless required.
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