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<p class="MsoNormal">Good morning,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m molding an existing outpatient facility and I’ve ran into an issue.
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<p class="MsoNormal">One of the HVAC units is a packaged DX unit supplying a few surgical rooms. The HVAC was designed around a class A or less operating room way back at the time of the original install. They’ve since changed to class C operating rooms which
have more strict airflow requirements. The building owners decided to modify the existing system rather than replace with new.
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That being said, the unit is still a DX cooled unit with in-duct steam humidification and HW reheat at the zone level. There is electric backup heat in the unit if the boilers fail.
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<p class="MsoNormal">Here’s the issue….<o:p></o:p></p>
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<p class="MsoNormal">The surgeons requested the rooms maintain 60 degrees all year round. The existing unit couldn’t maintain temperature. Therefore, there has been an air cooled packaged chiller added with a chilled water coil attached to the outdoor air
intake to cool and dehumidify the outdoor air before entering the unit. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I cannot find a way to model DX and chilled water at the same time. Does anyone have any suggestions?
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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