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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Good afternoon all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am wondering if anyone has found a good way to model
condensing boilers with Trace. From discussions with Trane staff it
appears that a new curve could be produced, although I did not receive much
guidance from them. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I think one way to do it would be to create multiple boiler
plants, the multiple boilers provide a way to do a sort of hot water reset
temperature based on OSA. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>My thought is that I can create a linear hot water supply
water reset based on OSA temperature (using appendix G requirements) from 120°F
@ 50°F to 180°F @ 20°F, with each boiler based on a 10°F OSA increment.
>From these temperature setpoints I would assume that the;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> Heating Hot Water return temp = Heating Supply –
20°F (Temp rise from Aerco curve) <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I would then be able input the corresponding efficiency at
that point for the boiler.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Has anyone had any experience with this? Any advice
would be greatly appreciated.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks and have a great day,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Josh<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Josh Goffin</span></font><font size=2><span style='font-size:10.0pt'> </span></font><font
size=1><span style='font-size:7.5pt'>Energy Auditor/Analyst</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Enertia Energy Inc.</span></font><font size=2><span style='font-size:
10.0pt'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><font size=1
face="Times New Roman"><span style='font-size:7.5pt'>9400 SW
Beaverton-Hillsdale Hwy. Suite 205</span></font></st1:address></st1:Street><o:p></o:p></p>
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<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=1
face="Times New Roman"><span style='font-size:7.5pt'>Beaverton</span></font></st1:City><font
size=1><span style='font-size:7.5pt'>, <st1:State w:st="on">OR</st1:State> <st1:PostalCode
w:st="on">97005</st1:PostalCode></span></font></st1:place><font size=1><span
style='font-size:7.5pt'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=1 face="Times New Roman"><span style='font-size:
7.5pt'>Phone: 503-972-7841<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Times New Roman"><span style='font-size:
7.5pt'>Cell: 503-956-3459<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Times New Roman"><span style='font-size:
7.5pt'>Fax: 503-972-7850<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Times New Roman"><span style='font-size:
7.5pt'>JoshG@EnertiaEnergy.com<o:p></o:p></span></font></p>
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