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<p class="MsoNormal">Everyone, I made an energy model of a building being served by water source heat pumps attached to a typical water loop with a fluid cooler and a boiler. I let eQuest size all the equipment including the boiler and water source heat pumps.
The PS-H Water Loop report showed the following:<o:p></o:p></p>
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<p class="MsoNormal">Notice that in January, the peak heating load is -991.9 kbtu/hr, the peak net load is -576.1 kbtu/hr, and the peak over load is -355.6 kbtu/hr. eQuest sized the water loop boiler to be -576.1 kbtu/hr. I believe these numbers are correct
and the boiler size is correct but I cannot find an explanation in a document telling me how net load and over load is calculated and what they mean. I can explain how eQuest develops the heat load, but not the other two loads. I know a typical hot water coil
system has heat load peaks equal to net load peaks and the over loads are usually zero. I am pretty sure the over load value is related to the heat pump COP, but I would like to be able to point to a written piece of documentation explaining this. Anybody
know where to look?<o:p></o:p></p>
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<p class="MsoNormal">Thanks.<o:p></o:p></p>
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<p class="MsoNormal">P.S. the energy model ran successfully with less than 10 heating hours out of throttling range.
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<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:black">Kathryn Kerns</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif"">Systems Specialist</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";font-variant:small-caps;color:teal">BCE</span></b><b><span style="font-size:10.0pt;font-family:"Times New Roman","serif";font-variant:small-caps;color:teal">
</span></b><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";font-variant:small-caps;color:teal">Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman","serif";color:black">| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></b><span style="font-size:7.0pt;font-family:"Times New Roman","serif";color:black">
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