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<DIV>All</DIV>
<DIV>Since Eric has not "corrected" Mathew, I will:</DIV>
<DIV>The eQuest POWERED induction unit SYSTEM (i.e. TYPE = PIU) just refers to fan-powered reHEAT boxes in VAV systems. The eQuest INDUCTION UNIT SYSTEM models an archaic system that can be made somewhat analogous to modern ACTIVE chilled beam systems by overriding some of the system defaults. However, no matter what the user specifies in the zone, this simulates constant volume airflow to all connected zones whenever the central AHU is active. </DIV>
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<DIV>The natural ventilation system keywords only apply to PSZ and related SYSTEM types, so can only be utilized in the most basic small commercial building models. And I'm fairly certain wind direction is not considered even by the more sophisticated S-G method, among other shortcomings. </DIV>
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<DIV>Fred Porter</DIV>
<DIV>Architectural Energy<BR><BR>>>> Mathew Higgins <higgins@edi-arch.com> 12/23/2008 12:05 PM >>><BR>Eric, please correct me if I'm wrong but I though a chilled beam was an <BR>induction unit; and eQuest has both powered and non-powered induction <BR>units. Also, if you look at the HVAC units you input there is an Outdoor <BR>Air tab that will let you specify either an Air Change Rate or <BR>Sherman-Grimsrud Method (based on wind) for Natural Ventilation. Either <BR>method requires the creation of schedules, but I've found both to be <BR>effective.<BR><BR>Matthew Higgins, LEED AP + ASHRAE-HPBD<BR>Technical Specialist<BR>Environmental Dynamics, Inc.<BR>Architecture and Sustainability Consulting Services<BR>505.242.2851<BR><BR>Any data provided by the Consultant, verbal or written, are to be considered opinions of building energy and/or daylight performance. The Client understands that the Consultant has no control of occupant habits, equipment or material performance or characteristics, site or climate conditions or the Contractor's method of assembly, and that the Consultant's opinions regarding building energy/daylight performance are made on the basis of the Consultant's professional judgment and experience. The Consultant makes no warranty, express or implied, that the energy/daylight performance of the building will not vary from the Consultant's opinion of building energy/daylight performance.<BR><BR>Eric Shadd wrote:<BR><BR>> Since eQUEST/DOE2.2 can't don't have natural ventilation or chilled <BR>> beam systems, how are these handled for Title 24 compliance?<BR>> <BR>> Regards,<BR>> Eric Shadd, PE<BR>> Project Manager, Energy Analysis Services<BR>> Architectural Energy Corporation<BR>> 142 Minna Street<BR>> San Francisco, CA 94105<BR>> PH: 415-970-6511<BR>> FX: 415-957-1381<BR>><BR>>------------------------------------------------------------------------<BR>><BR>>_______________________________________________<BR>>Bldg-sim mailing list<BR>><A href="http://lists.onebuilding.org/listinfo.cgi/bldg">http://lists.onebuilding.org/listinfo.cgi/bldg</A>-sim-onebuilding.org<BR>>To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG<BR>> <BR>><BR><BR>_______________________________________________<BR>Bldg-sim mailing list<BR><A href="http://lists.onebuilding.org/listinfo.cgi/bldg">http://lists.onebuilding.org/listinfo.cgi/bldg</A>-sim-onebuilding.org<BR>To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG<BR></DIV></BODY></HTML>