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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nick/Rashmi-<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>One limitation of the Well-Water-to-Water Heat-Pump (or W2WHP,
TYPE = HEAT-PUMP) is that only a chilled water or 2-pipe circulation loop can
be attached to it. This can be an issue if the central heat pump is
designed to supply both hot and chilled water. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>From other BLDG-SIM and EQUEST-USER posts, for simulating WSWHPs
that can produce both hot and cold water simultaneously, I gather that analysts
often opt to use loop-to-loop heat pump (or L2LHP, TYPE = LOOP-TO-LOOP-HP)
instead, since you can connect both a chilled water and hot water loop to the
chiller. However, from experience, I know that many of the water-to-water
heat pumps available are NOT loop-to-loop heat pumps, but rather a series of
water-to-water heat pumps that are manifolded to allow some circuits to operate
in heating while others are operating in cooling, with all circuits sharing
a common condenser water loop. If you read the description of the L2LHP
chiller closely, the L2LHP operates much differently than the W2WHP machine.
Also, I would be wary of using the default DOE-2 performance curves for
loop-to-loop and well-water-to-water chillers, as I found that the default
performance curves were quite different from what is currently available in the
US market.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The approach you have outlined, I believe, is on the right track,
if the correct chiller type is being simulated. However, it seems unlikely that
estimating the ground loop loads/temperatures using a building model with single-zone
WSHPs will produce the same results as the W2WHP/chilled beam system you
described. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Here are some reasons:<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l3 level1 lfo8'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Does not account for pump heat (both positive and negative impact
depending on it the system is in heating or cooling) on the building
circulation (chilled beam) loops.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l3 level1 lfo8'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Using the “DX/DX heating/cooling ground source heat pump”
option you mentioned, you will basically get single-zone WSHP systems, where
the WLHP loop is connected to the eQUEST GSHX (well-field) model. This
method may be taking too much credit for periods when there is high diversity
in the building. If a small fraction of the building requires cooling,
the chilled water system would have to run and the W2WHP would impart a load on
the ground loop and GSHX. However, in a building model with single zone water-to-air
heat pumps, I believe the load on the loop could, in theory, be balanced by a
fraction of units in heating and cooling, so that the ground temperature
leaving the building is the same as it was coming in. <o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l3 level1 lfo8'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>3)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Finally, part-load performance curves for water-to-air heat
pumps are likely not appropriate for a water-to-water heat pump system.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Here is a suggested alternative (that I have fully implemented
in eQUEST):<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l5 level1 lfo9'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Take the hourly LOADS on the lake/well loop model you have
created.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l5 level1 lfo9'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Apply them, with the appropriate schedules, as a internal energy
source in a single space building.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l5 level1 lfo9'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>3)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This space is served by a single zone, water-to-air heat pump,
which has a WLHP condenser loop and a GSHX, as would be typically be created by
a the wizard.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l5 level1 lfo9'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>4)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Make all the surfaces of the space adiabatic, zero out all other
loads and the system fan energy, and set you cooling/heating EIRs to 1.0.
With a few other adjustments (not enough time to list them all), you can more
or less get the load on the WSHP loop to be the same as internal energy source
load applied to the space. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>In essence, you are taking the loads directly from the lake-well
loop and transferring them to the other model what includes the GSHX model of
the well-field. From this secondary model, you can then extract the
temperatures returning from the well-field. The rest is similar to you
described, except you could even get as detailed as 8760 hourly load and temperature
schedules in each model.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Any thoughts from others who have simulated/studied these
systems before?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>David Reddy<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Madison Engineering, PS<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>444 NE Ravenna Blvd, Suite 406<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Seattle, WA 98115<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>office: 206-834-0002<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>direct: 206-829-8622<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Nick
Caton<br>
<b>Sent:</b> Friday, July 24, 2009 11:09 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] [Bldg-sim] loop to loop heatpump in equest<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I’ve chatted with Rashmi and feel like others may want to
know how this can be done in the future... Also copying [Equest-users] on
this discussion as advised by a list administrator. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>See attached screengrab for a simple visual of how I accomplished
this...<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Setting up the 4-pipe system sourced from a closed ground loop:<o:p></o:p></span></p>
<ol style='margin-top:0in' start=1 type=1>
<li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Create a
‘chiller’ of the type ‘water-to-water heat pump’<o:p></o:p></span></li>
<li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Create an
independent circulation loop of the type ‘lake/well’<o:p></o:p></span></li>
<li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Create a ground
loop heat exchanger of the type ‘lake/well’<o:p></o:p></span></li>
<li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Select as the
chiller CW loop and GLHX circulation loop the independent loop you created
– they should connect without errors<o:p></o:p></span></li>
<li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Assign a custom
temperature schedule for the lake/well ground loop in the screen that pops
up when you double click the GLHX (read on)<o:p></o:p></span></li>
<li class=MsoNormal style='color:navy;mso-list:l1 level1 lfo5'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Make sure the
default head/pump properties for the circulation loop and GLHX make sense
for your system – adjust as necessary. (i.e. if it’s a
closed ground loop, there shouldn’t be static head)<o:p></o:p></span></li>
</ol>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>The tricky thing is that both Rashmi and I were dealing with
closed-loop ground heat exchanger (not lake/well). The solution I came to
model this was to temporarily save the project in a separate directory to keep
my work, then go back to the wizards and heat/cool the same building reasonably
using the DX/DX heating/cooling ground source heatpump option, with all
appropriate ground and field properties well defined. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Once this is done, you can have eQuest additionally generate an
hourly report over of the resulting ground loop temperatures throughout the
year (actual procedure eludes my memory, but it’s in the archives).
Once this is done, I used that raw data to come up with the resulting weekly
average temperatures in the ground loop using excel. I then used these
figures to create a custom temperature schedule for the actual project, which
was assigned to the GLHX as mentioned above. This way you’re
reasonably accurately representing what temperatures the water-to-water
equipment is seeing coming out of the ground throughout the year based on your
actual geographic, ground loop, and soil condition variables as defined.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>The final logical step, and one I’m currently working on learning
for myself, is defining a custom performance curve for the water-to-water
equipment that’s representative of the real thing. I have been
advised the default chiller curves as well as the water-to-air heatpump curves
from the Climatemaster eQuest add-on are not appropriate for modeling
water-to-water heatpumps. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Best of luck!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>PS: Apologies for the screenshot’s quality – I had
issues making it small enough for the mailing list to accept.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Anthony
Hardman<br>
<b>Sent:</b> Friday, July 24, 2009 10:13 AM<br>
<b>To:</b> 'Rashmi Sonal'; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] loop to loop heatpump in equest</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Would the following get you close enough (ignoring the DOAS
side)?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l4 level1 lfo7'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Specify a water-air HP system<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l4 level1 lfo7'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Zero out the fan energy<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l4 level1 lfo7'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>3)<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Factor the load side pumping energy into the EIR of the HP<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l4 level2 lfo7'><![if !supportLists]><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>a.<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Alternatively,
you could add your load side pump energy to the source side pump<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Obviously there’s limitations either way and I’ve
never tried this, just thinking out loud. Certainly someone else out
there can comment who has attempted this?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Anthony Hardman<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:black'>Mechanical Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#9BBB59'>Geo-Energy Services<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Rashmi
Sonal<br>
<b>Sent:</b> Thursday, July 23, 2009 3:39 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] loop to loop heatpump in equest<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hi
All, <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
am trying to model a building with </span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>water-to-water heat pump connected to ground
HX and 4-pipe AHUs with induction unit at the terminal. </span><span
lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
have specified induction unit at the terminal, to model active chilled beams,
with a dedicated outdoor air unit. But with this configuration on airside I am
not able to attach the water to water heat pump to any condenser water loop on
the water side. Is there a way I can model GSHP serving active chilled beams in
equest?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks
in advance. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black'>Rashmi
Sonal, LEED AP</span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black'>Environmental
Designer<br>
Computational and Simulation Analysis (CoSA)<br>
<a href="http://www.burohappold.com" title="http://www.burohappold.com/">www.burohappold.com</a></span><span
lang=EN-GB style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black'>Tel: (+1)
212 616 0285</span><span lang=EN-GB style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
line-height:13.5pt'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#999999'>This transmission is confidential and intended solely for the
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