Load consumption resource query [RE-wrenches]

[August Goers]

Allan,

For commercial applications we use data sheets when at all possible and then
start making assumptions. 

I'd also take a look the free RETscreen tool (retscreen.net). The latest
version has an energy efficiency calculator and a good solar hot water
calculator. Once you get the hang of it you can start estimating loads
pretty well. The question mark help button provides lots on info on how to
estimate loads. 

This link has some useful data for households, some of these items might
apply to your situation:

http://www.eia.doe.gov/emeu/recs/recs2001/enduse2001/enduse2001.html

Hope this helps a little?

-August

August Goers

Luminalt Energy Corporation
Office:  (415) 564-7652
Mobile: (415) 559-1525
www.luminalt.com
august at luminalt.com

-----Original Message-----
From: Kurt Albershardt [mailto:info at es-ee.com] 
Sent: Wednesday, April 30, 2008 4:48 PM
To: RE-wrenches at topica.com
Subject: Re: Load consumption resource query [RE-wrenches]


> typical loads for appliances in a commercial kitchen. I fully intend to
> promote efficiency, of course, but I need a base from which to start,
> and many loads used in a high-end guest lodge don't match those in a
> typical off-grid home.

I have found reasonable data on some of the commercial kitchen appliances
from manufacturers' data sheets.  We have then applied duty cycles to those
(along with occupancy numbers and banquet loads) to try and guesstimate the
demand.

On the thermal side, a decent array of commercial dishwasher data and guest
room use figures are available in software packages provided by the
commercial water heater manufacturers.  (e.g. Rheem's CertiSpec3.)  My ME
advises me to halve their numbers as a starting point (they are in the
business of selling heaters...)





.


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