<BODY><P>Are there any examples of modeling UFAD with DOE2.1E (or EQUEST).</P>
<P>This is a commercial project with electric heating in climate zone 3A. The baseline System No. is 8 - VAV w/PFP Boxes). The proposed is also PIU (DOE2). The perimeter zones up to 3 ft are served from the ceiling. </P>
<P>The remaining interior zones have UFAD. The CHW coil leaving temp of the primary air is 48F. The UFAD supply temp is 65 F. The ceiling return air temp is 78. The System MIN-SUPPLY-T = 65 and COOL-SET-T = 48. ZONE-FAN-RATIO = 1.74 ?? 80% glass.</P>
<P>The Baseline primary air is 53F and ceiling supply is 55F. The ceiling return air temp is 76. System MIN-SUPPLY-T = 55 and COOL-SET-T = 53. ZONE-FAN-RATIO = 1.1. 40% glass.</P>
<P>Is all this correct? Increasing the ZFR increases the Fan energy. Increasing the MIN-SUPPLY-T from 55F to 65F increased the System Supply Air and Fan energy considerably.</P>
<P>For UFAD is it acceptable to assume the following space volume temps?</P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN style="COLOR: red"><FONT face=Times>$ Baseline Summer & Winter Space Volume Temp = 75 $</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN style="COLOR: red"><FONT face=Times><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN style="COLOR: red"><FONT face=Times>$ UFAD: 75F from 0' to 7' 85F from 7.1' to 10' Avg Summer Space Temp = 78F $<o:p></o:p></FONT></SPAN></P>
<P><SPAN style="FONT-SIZE: 10pt; COLOR: red; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><FONT face=Times size=3>$ UFAD: 75F from 0' to 7' 65F from 7.1' to 10' Avg Winter Space Temp = 72F $</FONT></SPAN></P><SPAN style="FONT-SIZE: 10pt; COLOR: red; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><FONT face=Times color=black>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"><FONT size=3>STD62.1-2004 Table 6-2 ‘<SPAN style="LETTER-SPACING: 0.3pt">Zone Air Distribution Effectiveness (Ez)’ shows<o:p></o:p></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN style="LETTER-SPACING: 0.3pt"><FONT face="Times New Roman"><FONT size=3>Ez = 1.0 for Ceiling Supply of Cool Air<o:p></o:p></FONT></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"><FONT size=3><SPAN style="LETTER-SPACING: 0.3pt">Ez = 1.2 for </SPAN><SPAN style="LETTER-SPACING: 0.1pt">Floor Supply of Cool Air and Ceiling Return.<o:p></o:p></SPAN></FONT></FONT></P>
<P><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; LETTER-SPACING: 0.1pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">How would you apply this in DOE2.1E for Under-floor Air Distribution?</SPAN></P>
<P><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; LETTER-SPACING: 0.1pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">How is occupancy based lighting modeled? Based on 10CFR435 Table 401.3.3. Lighting Schedule = Max Design Lighting * Base Lighting Schedule * 0.7 ?</SPAN></P>
<P><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; LETTER-SPACING: 0.1pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">How is occupancy based ventilation modeled? Percent Outdoor Air for Hour = Maximum Design Percent Outdoor Air * Occupancy Schedule Fraction. Apply this schedule in MIN-AIR-SCH ?</SPAN></FONT></SPAN></P>
<P><SPAN style="FONT-SIZE: 10pt; COLOR: red; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><FONT face=Times color=black size=3>V.C. Thomas</FONT></SPAN></P></BODY>
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