[Equest-users] DHW Process Flow

[Tom Butler]

Thanks John, 

The pump energy is also increasing.  The value eQuest calculates for the flow rate is 2.394, for a building with 60 residents. It seems like I either need to apply a time based conversion (making it gallons per second?) or move the decimal on the flow rate I have calculated, but I'm not sure which.

tb

-----Original Message-----
From: John Aulbach [mailto:jra_sac at yahoo.com] 
Sent: Wednesday, August 19, 2009 5:07 PM
To: Tom Butler
Subject: Re: [Equest-users] DHW Process Flow

Are you pumping at a constant flow rate? Your load may be varying, but your pumping may not.

Worth a look see.

John Aulbach

--- On Wed, 8/19/09, Tom Butler <TButler at lasarchitect.com> wrote:

> From: Tom Butler <TButler at lasarchitect.com>
> Subject: [Equest-users] DHW Process Flow
> To: equest-users at lists.onebuilding.org
> Date: Wednesday, August 19, 2009, 12:14 PM
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> I am modeling a dormitory for EAc1 in
> version 3.60. I’ve
> calculated the peak DHW load by using the flow rate of all
> of the fixtures on
> the hot water loop (410 gpm). I have a schedule that
> accounts for the vacant
> periods during the breaks and reduced usage in the summer
> when the building is partially
> occupied. When I use the 410 gpm rate as the process flow
> the energy
> consumption for hot water is astronomically high.  
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> What fact do I need to apply to the
> calculated flow rate to
> get realistic results? 
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> Thanks 
> 
> Tom Butler, LEED® AP
> 
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