Hi Kathryn,<br><br>Thanks for sharing your solution to the Georgia project. It sounds like a really good idea, simple yet effective. It's funny I don't think I would have thought of using 2 DOAS units, but why not?<br>
<br>WRT to the furnace. My ta<br><br><div class="gmail_quote">On Wed, Mar 30, 2011 at 1:59 PM, Kathryn Kerns <span dir="ltr"><<a href="mailto:kathryn.kerns@bceengineers.com">kathryn.kerns@bceengineers.com</a>></span> wrote:<br>
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<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial">Everyone, I may have asked this before, but has anybody run
across a section of ASHRAE 90.1 or LEED describing the operation of a baseline
furnace in a PSZ unit? Do we assume the heating modulates or does it stage? And
if it stages, how many stages? I have been modeling baseline furnace heating as
modulating since that is what naturally appears in eQuest, but I wonder. I know
in reality that a lot of small furnace heaters cycle to maintain space heat. </span></font></p>
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<p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;font-family:Arial">Also, I promised I would share results of my struggle to model
dehumidification for a project in Georgia. I was sort of successful,
I think. What I ended up doing was attaching 2 DOAS in series. The first DOAS
had a cooling only heat pump and the second unit had heating only heat pump. The
first unit handled the outside air and passed space/return air to the second
DOAS. The second unit supplied space/return air to the terminal units.
This way I got to define set points for the first DOAS cooling supply
temperature (space/return temperature) and the second DOAS heating supply (space/return
temperature). The amount of energy consumed and size of each unit was adjusted
to approximate a horseshoe dehumidification unit. It seemed to work. </span></font></p>
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<p style="margin:0in;margin-bottom:.0001pt"><b><b><font color="black" face="Arial" size="3"><span style="font-size:12.0pt;font-family:Arial;color:black">Kathryn Kerns</span></font></b></b></p>
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