Hi Andy,<br><br>Auto-sizing is a good way to go. That makes the schedule inputs for CDD and HDD very important. Also, make sure the Zone Sizing option is "Adjust loads" and the System Sizing Option is "Coincident". When using the Auto-size, set the System Heat Sizing Ratio to
1.25 and the System Cool Sizing Ratio to 1.15. Similarly for any central plant equipment, set the capacity ratio to 1.15 for cooling equipment and 1.25 for heating equipment.<br><br>You can find out what the auto-sized capacities are in the SV-A output reports for systems, and the PV-A output reports for plant equipment.
<br><br>Gail Stranske<br>CTG Energetics<br><br><div><span class="gmail_quote">On 2/15/07, <b class="gmail_sendername">Andy McNamara</b> <<a href="mailto:andyjmc@gmail.com">andyjmc@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello,<br><br>As I mentioned previously, I am creating an energy model for a LEED project. In
"baselining" the building, one of the stipulations of ASHRAE 90.1 2004 is:<br>"G3.1.2.2 Equipment Capacities. The equipment capacities for the baseline building design shall be based on sizing runs for each orientation and shall be oversized by 15% for cooling and 25% for heating"
<br><br>I think that means I use "auto-size", but then how do I capture what that size is and oversize it accordingly? I am guessing that the results may be in the SIM file. Can anyone provide tips for executing this? Is there a better way to do that auto-sizing for each orientation?
<br><br>Thanks,<br>Andrew McNamara<br>
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