<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>Our approach has been similar, but with lower equivalent furnace efficiencies because of the typical flue losses and the bigger convective losses (heat off the top of the units). Manufacturer claims of 85% efficiency seem typical for tube style units. Also note that most of the gas models do incorporate an exhaust fan for draw-thru.</div>
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<div>From the DOE2 point of view, the energy savings are realized by the significantly lower space temperatures these systems allow. In a cold environment repair garage application our most recent model predicts a 30-40% energy savings over conventional ceiling-hung unit heaters; matching the historical data we know of. j# </div>
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<div>Sharpe Energy Solutions, Inc</div>
<div>Ashland, OR 97520</div>
<div> </div>
<BLOCKQUOTE style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 8px; FONT-FAMILY: verdana; COLOR: black; MARGIN-LEFT: 8px; FONT-SIZE: 10pt" id=replyBlockquote webmail="1">
<DIV id=wmQuoteWrapper>-------- Original Message --------<BR>Subject: Re: [Equest-users] Infrared Heaters<BR>From: Charles Land <<a href="mailto:cland@geo-marine.com">cland@geo-marine.com</a>><BR>Date: Thu, September 09, 2010 11:36 am<BR>To: Peter Hillermann <<a href="mailto:peterh@westallarchitects.com">peterh@westallarchitects.com</a>>, "'BLafley'"<BR><<a href="mailto:BLafley@cetonline.org">BLafley@cetonline.org</a>>, "<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>"<BR><<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><BR><BR>Im not sure what your talking about as far as renewable energy, but ive always modeled infrared by dropping the zone temp setpoint by ten degrees, setting the fan energy to zero and making the furnace 100% efficient. Some times I lower the heating design temperature as well.<BR><BR>-----Original Message-----<BR>From: <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] On Behalf Of Peter Hillermann<BR>Sent: Thursday, September 09, 2010 12:42 PM<BR>To: 'BLafley'; <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><BR>Subject: Re: [Equest-users] Infrared Heaters<BR><BR>Bill,<BR><BR>Do you have a chart that shows how much renewable energy the unit consumes<BR>and then uses to create heat? What you need to do is create the item in 2<BR>parts. Its renewable component, which might be a solar collector and then<BR>you set up a radiant heater in the room either as baseboard or as your<BR>system in that zone.The thing that I have noticed while modeling is there<BR>are 2 things you are looking at.. products in your building and how they<BR>consume energy, by amount and efficiency. The second is what are you doing<BR>to replace the energy... renewable or are you pulling it from the grid. The<BR>model does not care where it comes from as long as when you use the<BR>renewable it is as efficient as you say it is. I typically use PVWatt<BR>calculator and do manual calculations because someone taught me that. You<BR>can also set up a collector in the utility&economics tab under photovoltaic<BR>modules. This is where you will need the solar information on your<BR>collector.<BR><BR>The weather file needs to be correct because this is where it is pulling<BR>your solar radiation data from watts/meter squared or watts/feet squared.<BR><BR>Hope this helps. (Easier to do by hand)<BR><BR>Thanks,<BR><BR>PETER HILLERMANN<BR><BR><a href="mailto:peterh@westallarchitects.com">peterh@westallarchitects.com</a><BR><BR>westall<BR>architects<BR>3404 pierce drive<BR>chamblee, georgia 30341<BR><BR>o 770.458.4113<BR>f 770.458.5352<BR>c 678.898.2936<BR><BR><a href="http://westallarchitects.com">westallarchitects.com</a><BR><BR><BR><BR><BR>-----Original Message-----<BR>From: <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a><BR>[<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] On Behalf Of BLafley<BR>Sent: Thursday, September 09, 2010 10:22 AM<BR>To: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><BR>Subject: [Equest-users] Infrared Heaters<BR><BR>Hello,<BR><BR>Does anyone have any experience modeling ceiling hung infrared heaters in<BR>eQuest?<BR><BR>Thanks,<BR>--<BR>Bill Lafley<BR>Energy Analyst<BR>Center for Ecological Technology (CET)<BR>320 Riverside Drive - 1A Florence, MA 01062 <a href="mailto:blafley@cetonline.org">blafley@cetonline.org</a><BR><<a href="mailto:blafley@cetonline.org">mailto:blafley@cetonline.org</a>> / 413-586-7350 ext. 222<BR>413-695-2730 (cell) Visit <a href="http://www.cetonline.org">www.cetonline.org</a> <<a href="http://www.cetonline.org">http://www.cetonline.org</a>><BR>Support our work <<a href="https://www.merchantamerica.com/cet/echopay/index.php>">https://www.merchantamerica.com/cet/echopay/index.php></a>;<BR><BR>_______________________________________________<BR>Equest-users mailing list<BR><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><BR>To unsubscribe from this mailing list send a blank message to<BR><a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><BR><BR>_______________________________________________<BR>Equest-users mailing list<BR><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><BR>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><BR>_______________________________________________<BR>Equest-users mailing list<BR><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><BR>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><BR></DIV></BLOCKQUOTE></span></body></html>