[Equest-users] DHW Input Rating

[eric wang]

Dan,
 
Thanks a lot for your feedback. It  is really helpful for my projects. 
 
Best,
 
Shaojie

--- On Fri, 11/7/08, Dan Russell <danr at engineeringinc.com> wrote:

From: Dan Russell <danr at engineeringinc.com>
Subject: RE: [Equest-users] DHW Input Rating
To: "shaojieworld2006 at yahoo.com" <shaojieworld2006 at yahoo.com>, "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Date: Friday, November 7, 2008, 6:19 PM








For standard office building 1 gal/person/day is about right for actual consumption.  For DHW design of office buildings ASHRAE provides the chart below, which shows a recovery rate of 0.1 to 0.35 gal/person/hour.  The difference depends on how much storage tank capacity you plan on having.  Note that these values would be for peak loading and thus 1 gal/person/hour would result in far too much consumption than normal.
 

 
Thanks,
 
 Dan Russell, EIT 
 

 

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of eric wang
Sent: Wednesday, November 05, 2008 12:13 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] DHW Input Rating
 





Hi eQUEST Folks,

 

I used schematic design wizard for sizing DHW heater and found the default value of hot water use is 1 gal/person/day in the office building. After I changed the operation hour of main schedule for occupancy. The input rating kept the same. It seems to me that the unit of hot water use should be 1 gal/person/hour.  Can anyone point out if my understanding is wrong?

 

Thanks a lot

 

Shaojie
 


      
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