[Equest-users] Pump kW/gpm

[Howe, Timothy]

Correct, I did reference Section 11, but the ECB and PRM have the same pumping power requirements, and Section 11 gives the details on how to reach those pumping power requirements.

FYI you will never get 19.0000000 W/GPM or 22.000000 W/GPM, it is always very close, say 18.87 or 21.95 for example,  which is close enough for energy modeling and EAC1 purposes.

I used to use the hunt and peck method which Eddie referenced until I read Section 11.

Tim.



Timothy Howe, MS, LEED® AP
Mechanical Engineer
Stantec
61 Commercial Street
Rochester NY 14614
Ph:   (585) 413-5347
Fx:   (585) 272-1814
Cell: (585) 330-8681
stantec.com<http://www.stantec.com>

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From: Eddie Corwin [mailto:ecorwin at altanova-energy.com]
Sent: Monday, November 29, 2010 12:22 PM
To: Omar Katanani; Howe, Timothy; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Pump kW/gpm

The ASHRAE 90.1 Section that Timothy referred to is meant to be used with the Energy Cost Budget method.  This is not he method that LEED uses.  To get your pump power equal to 19 W/GPM, I would suggest adjusting the static head of the pump until you get the desired W/GPM from the output file.

-Eddie

__________________________________________________________
From: Omar Katanani <omar at ecoconsulting.net>
To: "Howe, Timothy" <Timothy.Howe at stantec.com>; equest-users at lists.onebuilding.org
Sent: Mon, November 29, 2010 12:09:46 PM
Subject: Re: [Equest-users] Pump kW/gpm

Thanks Timothy!

I never read section 11 of ASHRAE 90.1...

Is this method approved for LEED purposes?

Thanks!
Omar

___________________________

Omar Katanani
Sustainable Design Engineer
Email: omar at ecoconsulting.net


EcoConsulting (Lebanon)
Nahas Building, 4th floor
4 St-Maron Street / Georges Haddad Avenue
Postal Code: 2028 5806 SAIFI
Beirut, Lebanon
Tel:       +961 (0) 1 971 266
Mobile:    +961 (0) 3 045 045


EcoConsulting (UK) Ltd
28 Marshalsea Road
London, SE1 1HF
Tel: +44 (0)207 939 0989
Fax: +44 (0)207 939 0981
Website: www.ecoconsulting.net<http://www.ecoconsulting.net>



-----Original Message-----
From: Howe, Timothy [mailto:Timothy.Howe at stantec.com]
Sent: Mon 11/29/2010 4:09 PM
To: Omar Katanani; equest-users at lists.onebuilding.org
Subject: RE: Pump kW/gpm

Enter the following:

Chilled Water:
Head: 75
Motor eff: 1
Mech eff: .65

Hot Water:
Head: 60
Mech eff: 1
Motor eff: .60

Condenser Water:
Head: 60
Mech eff: 1
Motor eff: .60

Leave everything else blank to autosize.

Source: ASHRAE 90.1-2007 Section 11 Page 72


Timothy Howe, MS, LEED® AP
Mechanical Engineer
Stantec
61 Commercial Street
Rochester NY 14614
Ph:   (585) 413-5347
Fx:   (585) 272-1814
Cell: (585) 330-8681
stantec.com<http://stantec.com><http://www.stantec.com>

The content of this email is the confidential property of Stantec and should not be copied, modified, retransmitted, or used for any purpose except with Stantec's written authorization. If you are not the intended recipient, please delete all copies and notify us immediately.

ü Please consider the environment before printing this email.

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Omar Katanani
Sent: Monday, November 29, 2010 6:24 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Pump kW/gpm

Dear all,

Can someone tell me where I can enter the pump kW/gpm in eQUEST?

I can see 2 input boxes: 1 for kW and 1 for gpm. If I need to enter 22W/gpm for my baseline chilled water loop pump, how can I do this if I do not have numbers for the wattage and flow?

Thanks!
Omar
___________________________
Omar Katanani
Sustainable Design Engineer
Email: omar at ecoconsulting.net<mailto:omar at ecoconsulting.net>

EcoConsulting (Lebanon)
Nahas Building, 4th floor
4 St-Maron Street / Georges Haddad Avenue
Postal Code: 2028 5806 SAIFI
Beirut, Lebanon
Tel:          +961 (0) 1 971 266
Mobile:    +961 (0) 3 045 045

EcoConsulting (UK) Ltd
28 Marshalsea Road
London, SE1 1HF
Tel:  +44 (0) 207 939 0989
Fax:  +44 (0) 207 939 0981
Website: www.ecoconsulting.net<http://www.ecoconsulting.net><http://www.ecoconsulting.net/>


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