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<P><FONT SIZE=2 FACE="Arial">2 part question - both regarding Humidity Control in eQUEST (v3.6):</FONT>
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<P><FONT SIZE=2 FACE="Arial">1.</FONT>
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<P><FONT SIZE=2 FACE="Arial">I'm trying to model dehumidification in a VAV system, and I keep getting this error message:</FONT>
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<P><FONT SIZE=1 FACE="Courier New"> **WARNING**********************************************************************</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> ZONE East Perim Zn (T.E37) </FONT>
<BR><FONT SIZE=1 FACE="Courier New"> might have insufficient heating capability.</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> Check that the SYSTEM or ZONE HEATING-CAPACITY plus this</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> ZONEs BASEBOARD-RATING is adequate to maintain the ZONE</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> specified DESIGN-HEAT-T for the calculated peak ZONE load</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> (see LS-A or LS-B for the ZONE peak load.)</FONT>
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<P><FONT SIZE=1 FACE="Courier New"> SYSTEM Sys1 (VAVS) (T) </FONT>
<BR><FONT SIZE=1 FACE="Courier New"> which supplies the above listed ZONE, has a design heating</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> coil exit temperature, HEAT-SET-T,(plus any zone reheat)</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> below its MAX-SUPPLY-T or the ZONE DESIGN-HEAT-T, which</FONT>
<BR><FONT SIZE=1 FACE="Courier New"> might account for the insufficient heating capability.</FONT>
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<P><FONT SIZE=1 FACE="Courier New"> **WARNING**********************************************************************</FONT>
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<P><FONT SIZE=2 FACE="Arial">I tried doubling the heating capacity, but it sends out the same message. I have experimented with various systems, and it seems like the only system I came across that does seem to be able to model this (or at least shows a rise in energy usage) is the packaged single zone. (I am thinking of using this instead since there is a VAV option with this). Has anyone else run across this? The documentation says that the program should do humidity control with the VAV system.</FONT></P>
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<P><FONT SIZE=2 FACE="Arial">2. </FONT>
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<P><FONT SIZE=2 FACE="Arial">When I model the building with the packaged single zone system and dehumidification, if I use the add on desiccant option (either liquid or solid), I get a huge increase in heating energy. This seems counterintuitive - I would assume there would be a reduction in heating energy from the lack of reheat (there is some penalty associated with recharging the desiccant, but that shouldn't outweigh the benefits of reheat reduction).</FONT></P>
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<P><FONT SIZE=2 FACE="Arial">Any guidance on this would be greatly appreciated.</FONT>
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<P><FONT SIZE=2 FACE="Arial">Thanks</FONT>
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<P><B><FONT COLOR="#000000" FACE="Garamond">Vikram Sami,</FONT></B> <FONT COLOR="#000000" FACE="Garamond">LEED AP</FONT><B></B>
<BR><FONT COLOR="#000000" FACE="Garamond">Direct Phone 404-253-1466 | Direct Fax 404-253-1366</FONT>
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