<font color="#000066"><font face="tahoma,sans-serif">Uday,</font></font><div><font color="#000066"><font face="tahoma,sans-serif"><br></font></font></div><div><font color="#000066"><font face="tahoma,sans-serif"><br></font></font></div>
<div><font color="#000066"><font face="tahoma,sans-serif">Have you tried creating a new performance curve feeding the "Raw Data Points" from the Input Type dropdown menu? </font></font><font color="#000066" face="tahoma, sans-serif">If not, I would say try to create the Curve formula from excel (putting your Wetbuld depression and the efficiency data and look up if it's Linear, quadratic, etc) then put those values at a, b & c at Performance Curve Properties window.</font></div>
<div><font color="#000066" face="tahoma, sans-serif">The second method would, I guess, be more accurate.</font></div><div><span style="font-family:tahoma,sans-serif;color:rgb(0,0,102)"><br></span></div><div><span style="font-family:tahoma,sans-serif;color:rgb(0,0,102)"><br>
</span></div><div><span style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Hope it helps,</span></div><div><span style="font-family:tahoma,sans-serif;color:rgb(0,0,102)">Aru</span></div><div><span style="font-family:tahoma,sans-serif;color:rgb(0,0,102)"><br>
</span></div><div><br><div class="gmail_quote">On Mon, May 14, 2012 at 1:01 PM, <span dir="ltr"><<a href="mailto:equest-users-request@lists.onebuilding.org" target="_blank">equest-users-request@lists.onebuilding.org</a>></span> wrote:<br>
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<br>Today's Topics:<br>
<br>
1. User defined Indirect/Direct Evaporative cooling model<br>
(Uday Gorre)<br>
2. OA-FROM-SYSTEM (Janne Kairento)<br>
<br><br>---------- Forwarded message ----------<br>From: "Uday Gorre" <<a href="mailto:u_k_gorre@ateindia.com">u_k_gorre@ateindia.com</a>><br>To: <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><br>
Cc: <br>Date: Mon, 14 May 2012 15:24:21 +0530<br>Subject: [Equest-users] User defined Indirect/Direct Evaporative cooling model<br><div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt">Dear eQUEST users,<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt"><u></u> <u></u></span></font></p><p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt">I am modeling a Indirect/Direct Evp.cooling model in eQUEST using user defined data.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt"><u></u> <u></u></span></font></p><p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt"> In my model please find attached excel sheet for effectiveness is a function of Wet bulb depression (Difference between Outdoor DBT and WBT). But as per my observation eQUEST provides to create user defined function for effectiveness based on flow (Find attached screen shot)only. Is there any possibility to define effectiveness based on wet bulb depression. And one more doubt is generally wet bulb depression is hourly changing based on weather data, so how it account in effectiveness and how zone entering minimum supply temperature (Find attached screen shot) effects with this change because generally<span> </span>this temperature is a function of effectiveness and Wet bulb Depression.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt"><u></u> <u></u></span></font></p><p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt">Can anybody please help me how to model a user defined model.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt"><u></u> <u></u></span></font></p><p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt">Thanks & Regards <u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt"><u></u> <u></u></span></font></p><p class="MsoNormal"><font face="Calibri"><span style="font-size:11.0pt">Uday …..<u></u><u></u></span></font></p></div>
</div><br><br>---------- Forwarded message ----------<br>From: Janne Kairento <<a href="mailto:energymodelingftw@gmail.com">energymodelingftw@gmail.com</a>><br>To: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
Cc: <br>Date: Mon, 14 May 2012 13:49:54 -0400<br>Subject: [Equest-users] OA-FROM-SYSTEM<br>Hello All,<br><br>I'm currently trying to model a server room that that
uses rack cooling as the first stage of cooling. There is a RTU that
provides additional cooling and ventilation to the space. I modeled the
server room to be conditioned by fan coils and zeroed out the fan energy
and increased the coil head to account for the increased head across
the racks. I moved the RTU to the top of the Systems section in the .inp
and assigned the fan coil to get OA-FROM-SYSTEM. On the thermal zone
level, I entered 50 cfm oa/person. My question is if the RTU provides
30% OA as a percentage of design flow, will my space get the OA and the
additional airflow? Any help would be much appreciated!<br>
<br>-Joseph
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><span style="border-collapse:collapse;font-family:arial,sans-serif;font-size:13px"><i><span><span style="font-size:10pt;font-family:Georgia,serif;color:black">Fightin'</span></span><span><span style="font-size:10pt;font-family:Georgia,serif;color:black"> </span></span><span><span style="font-size:10pt;font-family:Georgia,serif;color:black">Texas</span></span><span><span style="font-size:10pt;font-family:Georgia,serif;color:black"> </span></span><span><span style="font-size:10pt;font-family:Georgia,serif;color:black">Aggie Class of 2010</span></span></i></span><div>
<span style="border-collapse:collapse;font-family:arial,sans-serif;font-size:13px"><span><span style="font-size:10pt;font-family:Georgia,serif;color:black"><i>JU, Kolkata alumni 2005</i></span></span></span></div><br>
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