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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi All,<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'>First I want to thank Pasha for all the help on this project I
am working on. Project is a WTWHP using geothemal loops as heat sink. WTWHP produces
chilled and hot water to chilled beams DOAS and air handling units. I have unmet
hours exceeding the allowed value. <o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I realized that I had sized the water to water heat pump for
cooling and added a boiler with a heat exchanger for supplemental heat for the
Air handling unit loop and/or to boost the geo loop to 40 F in case the loop
temp drop below the setpoint. The Equest does not allow me to add a heat
exchanger in the loop. According to Ashrae 90.1- 2004, “if simulation
software can not model the proposed design explicitly, we can substitute a
thermodynamically similar component model that can approximate performance of
the component that can not be modeled explicitly”. <o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I tried baseboard with OA reset schedule</span><span
style='font-size:11.0pt;font-family:Wingdings;color:#1F497D'>à</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> bsbd
and boiler will only activated when outside temperature drops below 30 F, this
way the chilled beam will provide heating and baseboard will kick in when OA
temp drops. This approach did not yield desirable results. Is there any other
approach available? <o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Adee<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-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
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