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<p class=MsoNormal>Hello all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am working on a model for a LEED submission. The
location is a very cold climate (northern Minnesota) and thus relies on radiant
floor and FTR to handle envelope load heating (with water to water heat pump),
with airside heat pump units only functioning to heat air to the space
temperature. Using the proper corrections for a DOAS, outside air, etc.,
modeling the proposed case has not been a problem. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Appendix G says that I should select system 4 – PSZ-HP
as my baseline. If I want to heat using only the airside system, the
cooling design flow is actually less than the heating design flow for exterior
zones because of the extremely cold climate. Should I keep the design
heating and cooling flows the same as in the proposed case and just use
electric baseboards to make up the envelope heating difference, or should I
bump up the airflows to whatever they need to be and let the airside system do
all of the heating?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Todd<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#005480'>Todd Lagus, EIT<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:#807F83'>Mechanical Engineer<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:#807F83'>Sebesta Blomberg <br>
sebesta.com</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>
<span style='color:#807F83'>| P 651.634.7236 | F 651.634.7400<o:p></o:p></span></span></p>
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