[Equest-users] Fan Motor Efficiency Change

[Demba Ndiaye]

Sorry John,

Did not realize you are talking about fans. When I saw Motor Class, my mind immediately jumped to pump because that is the only place where eQuest allows to input it.

Yeah, for fans, as Jeremy pointed out, you have two keywords in eQuest: SUPPLY-EFF and MECH-SUPPLY-EFF. The first is the combined efficiency (fan + motor) and the second is the mechanical efficiency of the fan alone.

_____________
Demba NDIAYE

From: John Aulbach [mailto:jra_sac at yahoo.com]
Sent: Wednesday, July 28, 2010 2:12 PM
To: Jeremy McClanathan; Demba Ndiaye; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Fan Motor Efficiency Change

Thank you, Jeremy. By "plug and chug", that seemed to be the Parameter that changed in running a test building through Standard, High, and Premium Efficiency.

Wouldn't it be nice if some of this stuff was discussed more in the Manuals ??

John

________________________________
From: Jeremy McClanathan <jmcclanathan at CDiengineers.com>
To: John Aulbach <jra_sac at yahoo.com>; Demba Ndiaye <Demba.Ndiaye at setty.com>; "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Wed, July 28, 2010 10:56:45 AM
Subject: RE: [Equest-users] Fan Motor Efficiency Change


I account for motor eff by changing the total eff, where total eff = motor eff * mech eff.  I believe the keyword for total eff in the inp file is SUPPLY-EFF for supply fans.

___________________________________________

Jeremy McClanathan, LEED® AP
CDi ENGINEERS
4200 194th St SW, Ste 200, Lynnwood, WA 98036
P 425-672-1071 | F 425-778-8769
P Please consider the environment before printing this email.



From: John Aulbach [mailto:jra_sac at yahoo.com]
Sent: Wednesday, July 28, 2010 10:51 AM
To: Demba Ndiaye; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Fan Motor Efficiency Change

Thank you, Demba.

But this is for a PUMP. Not a FAN.

John

________________________________
From: Demba Ndiaye <Demba.Ndiaye at setty.com>
To: John Aulbach <jra_sac at yahoo.com>; "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Wed, July 28, 2010 10:39:34 AM
Subject: RE: [Equest-users] Fan Motor Efficiency Change
John,

In the INP, it is the “MOTOR-CLASS” input. You see in the INP something like:

FLOW             = 300
                NUMBER           = 1
                HEAD             = 80
                MECH-EFF         = 0.776
                MOTOR-CLASS      = HI-EFF
                CAP-CTRL         = ONE-SPEED-PUMP

_____________
Demba NDIAYE

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of John Aulbach
Sent: Wednesday, July 28, 2010 12:34 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Fan Motor Efficiency Change

I should know this one, but draw a blank.

The Wizard asks if you want Standard, Hi Efficiency, or Premium Efficiency motors for your fan system.

How do those show up in the .INP file? That will give me a clue as to what Parameters to modify for changing to PE motors.

Thanks.

John R. Aulbach, PE, CEM
Senior Energy Engineer
________________________________
Partner Energy
1990 E. Grand Avenue, El Segundo, CA 90245
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745
www.ptrenergy.com<http://www.ptrenergy.com/> | jaulbach at ptrenergy.com<mailto:%7C%20jaulbach at ptrenergy.com>





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