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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi, All:<o:p></o:p></p><p class=MsoNormal>I make a simple model to check how much energy does the VAV system can saving. <o:p></o:p></p><p class=MsoNormal>The result shows like below:<o:p></o:p></p><p class=MsoNormal>Something puzzle me :<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Also the fan power increase a lot , how could both Space cooling & Space heating decrease? I set both of the 2 models the same T-schedule and the same Fan power. Maybe the Space Heating can be understand by the fan <span lang=ZH-CN style='font-family:宋体'>△</span>T, but how I can’t explain the cooling decrease.<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>I just set CAV as single zone with reheat and constant Volume, is that right?<o:p></o:p></p><p class=MsoNormal><img width=315 height=280 id="图片_x0020_1" src="cid:image002.jpg@01CD2C88.42F613D0"><o:p></o:p></p><p class=MsoNormal>Any suggestion should be appreciation.<o:p></o:p></p><p class=MsoNormal>Thanks a lot. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Joey <o:p></o:p></p></div></body></html>