Hi All,<div><br></div><div>I am recently working on the setting of the waterside free-cooling system in a retail with large footage. The cooling load of the interior space in winter is big and the outside temperature in winter is around 4C (39F), large potential for water-side free-cooling.</div>
<div><br></div><div>In eQuest, I created a new chiller and set the type to "Water Economizer", chose the same loops as the other chillers and installed individual pumps to it. But the modelling result shown no energy saving.</div>
<div><br></div><div>I have no idea on how to control the system. Is there any important control settings?</div><div><br></div><div>Thank you very much.</div><div><br></div><div><p class="MsoNormal"><a name="_MailAutoSig"><span style="font-size:10.0pt;
font-family:"Arial","sans-serif";mso-fareast-font-family:SimSun;mso-fareast-theme-font:
minor-fareast;color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">Best Regards,</span></a></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;color:#1F497D;mso-themecolor:dark2;
mso-no-proof:yes">____________________________________</span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><b><span style="font-size:16.0pt;mso-bidi-font-size:11.0pt;font-family:"Rage Italic";
mso-fareast-font-family:STXingkai;mso-bidi-font-family:Arial;color:black;
mso-no-proof:yes">Larry LI</span></b></span><span style="mso-bookmark:_MailAutoSig"><b><span style="font-size:16.0pt;font-family:"Rage Italic";mso-fareast-font-family:STXingkai;
mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
color:black;mso-no-proof:yes"></span></b></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><b><span style="font-size:10.0pt;mso-bidi-font-size:11.0pt;font-family:"Bell MT","serif";
mso-fareast-font-family:STXingkai;mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;color:black;mso-no-proof:yes">LEED AP BD+C</span></b></span><span style="mso-bookmark:_MailAutoSig"><span lang="EN-US" style="font-size:10.0pt;
font-family:"Bell MT","serif";mso-fareast-font-family:SimSun;mso-fareast-theme-font:
minor-fareast;mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-themecolor:
dark2;mso-ansi-language:EN-US;mso-no-proof:yes"></span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;color:#1F497D;mso-themecolor:dark2;
mso-no-proof:yes"> </span></span><span style="mso-bookmark:_MailAutoSig"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D;
mso-themecolor:dark2;mso-no-proof:yes"></span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Bell MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:dark2;mso-no-proof:
yes">Building Physics </span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><b><span style="font-size:11.0pt;font-family:"Bell MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">Arup</span></b></span><span style="mso-bookmark:_MailAutoSig"><b><span lang="EN-US" style="font-family:"Calibri","sans-serif";
mso-ascii-theme-font:minor-latin;mso-fareast-font-family:SimSun;mso-fareast-theme-font:
minor-fareast;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:dark2;mso-ansi-language:
EN-US;mso-no-proof:yes"></span></b></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Bell MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">L5 Festival Walk, 80 Tat
Chee Avenue,</span></span><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-theme-font:minor-bidi;
color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes"></span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Bell MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">Kowloon Tong, Kowloon, Ho<a name="QuickMark"></a>ng Kong</span></span><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;color:#1F497D;mso-themecolor:dark2;
mso-no-proof:yes">,</span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Bodoni MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:black;mso-no-proof:yes">Main :</span></span><span style="mso-bookmark:
_MailAutoSig"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;color:black;
mso-no-proof:yes"> </span></span><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"MS PGothic","sans-serif";mso-bidi-font-family:
Arial;color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">+852 2528 3031</span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Bell MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:black;mso-no-proof:yes">Direct :</span></span><span style="mso-bookmark:
_MailAutoSig"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";
mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;color:black;
mso-no-proof:yes"> </span></span><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"MS PGothic","sans-serif";mso-bidi-font-family:
Arial;color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">+852 3447 6306</span></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"><b style="mso-bidi-font-weight:
normal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:
Arial;color:black;mso-no-proof:yes"><a href="http://larry.li">larry.li</a></span></b></span><span style="mso-bookmark:_MailAutoSig"><b style="mso-bidi-font-weight:normal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes">@<a href="http://arup.com">arup.com</a> </span></b></span><span style="mso-bookmark:_MailAutoSig"><b style="mso-bidi-font-weight:normal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:
Arial;color:#1F497D;mso-themecolor:dark2;mso-no-proof:yes"></span></b></span></p>

<p class="MsoNormal"><span style="mso-bookmark:_MailAutoSig"></span><a href="http://www.arup.com/"><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Bell MT","serif";mso-fareast-font-family:
SimSun;mso-fareast-theme-font:minor-fareast;mso-bidi-font-family:Arial;
color:blue;mso-no-proof:yes">www.arup.com</span></span><span style="mso-bookmark:
_MailAutoSig"></span></a><span style="mso-bookmark:_MailAutoSig"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ascii-theme-font:
minor-latin;mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;
mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;color:#1F497D;mso-themecolor:dark2;mso-no-proof:
yes"></span></span></p></div><div><br></div>