Hi Joe,<br><br>The info is actually pretty robust, it just hasn't been covered for while and no one seems to be using it much. So kudos to you. I am going to attach a screen shot below, but also refer you to Volume 3 of the manuals. That's where you'll find lots of in depth discussions. Some of the commands may be slightly different in name and format but I think you'll be able to figure them out.<br>
<br>Cheers,<br><br>Carol<br><br>
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<div id="d2h_breadcrumbs" class="d2h_breadcrumbs"><a class="d2h_breadcrumbsNormal" href="volume3topics.htm">Volume 3: Topics</a><span class="d2h_breadcrumbsLinkSeparator"> > </span><a class="d2h_breadcrumbsNormal" href="centralplantcomponents1.htm">Central Plant Components</a><span class="d2h_breadcrumbsLinkSeparator"> > </span><a class="d2h_breadcrumbsNormal" href="loadmanagementandequipctrl.htm"><font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOAD</font>-<font style="background-color: rgb(49, 106, 197);" color="#ffffff">MANAGEMENT</font> and EQUIP-CTRL</a><span class="d2h_breadcrumbsLinkSeparator"> > </span><a class="d2h_breadcrumbsNormal" href="examplesofequipctrlandloadmanagementsequences.htm">Examples of EQUIP-CTRL
and <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOAD</font>-<font style="background-color: rgb(49, 106, 197);" color="#ffffff">MANAGEMENT</font>
Sequences</a></div>
<h4>Example 1: Chiller Staging</h4>
<p class="MsoBodyText">Assume a central plant has three chillers: 200 tons, 400
tons, and 600 tons. By default, the program will use the 200 ton chiller
whenever the <font style="background-color: rgb(49, 106, 197);" color="#ffffff">load</font>
is in the range of 100-200 tons, the 400-ton chiller for <font style="background-color: rgb(49, 106, 197);" color="#ffffff">loads</font> in the range of
201-400 tons, etc.</p>
<p class="MsoBodyText">In this example, this is not the optimum control sequence,
however, because the 200 and 600-ton machines are newer and much more efficient
than the 400-ton machine. The following sequence will optimally <font style="background-color: rgb(49, 106, 197);" color="#ffffff">load</font> the newer machines
and reserve the 400-ton machine for periods of maximum <font style="background-color: rgb(49, 106, 197);" color="#ffffff">load</font>:</p>
<p class="DOE-2Input">CHLR-CTRL = EQUIP-CTRL<br>TYPE =
COOLING<br>CIRCULATION-LOOP = COOLING-LOOP<br><br><font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-1 =
2.4 <i>Millions of Btuh</i><br>CHILLERS-1 =
(CHLR-200)<br><br><font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-2 = 7.2<br>CHILLERS-2 =
(CHLR-600)<br><br><font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-3 = 9.6<br>CHILLERS-3 =
(CHLR-600,CHLR-200)<br><br><font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-4 = 14.4<br>CHILLERS-4 =
(CHLR-600,CHLR-200,CHLR-400)<br>..</p>
<p class="MsoBodyText">The spacing between <font style="background-color: rgb(49, 106, 197);" color="#ffffff">load</font> ranges is for clarity only; as with all BDL input,
spacing has no effect on the meaning of the input. </p>
<p class="MsoBodyText">Some types of equipment, such as chillers and cooling
towers, have a capacity that varies hourly in accordance with ambient
temperature and/or other conditions. Therefore, it often makes sense not to have
to specify a fixed <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU range, but to allow the range to default to the
hourly capacity of the equipment listed within the range. If you do not specify
the <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU
keyword, the value will default to the hourly capacity. The following is
equivalent to the example above, but takes into account the varying hourly
capacities:</p>
<p class="DOE-2Input">CHLR-CTRL = EQUIP-CTRL<br>TYPE =
COOLING<br>CIRCULATION-LOOP = COOLING-LOOP<br><br>CHILLERS-1 =
(CHLR-200)<br>CHILLERS-2 = (CHLR-600)<br>CHILLERS-3 =
(CHLR-600,CHLR-200)<br>CHILLERS-4 =
(CHLR-600,CHLR-200,CHLR-400)<br>..</p>
<p class="MsoBodyText">Also, while the above input works, it uses more keywords
than is needed; also for clarity. The following input is equivalent:</p>
<p class="DOE-2Input">CHLR-CTRL = EQUIP-CTRL<br>TYPE =
COOLING<br>CIRCULATION-LOOP = COOLING-LOOP<br><br>CHILLERS-1 =
(CHLR-200)<br>CHILLERS-2 = (CHLR-600,CHLR-200,CHLR-400)<br>..</p>
<p class="MsoBodyText">This input, while shorter than the previous, is also
somewhat overspecified because the default sequencing for the EQUIP-2 list is
the order entered. In other words, the CHILLERS-SEQ-2 did not need to be listed
in this example. </p>
<p class="MsoBodyText">If sequencing is not specified, equipment is started in the
order listed. The following examples are equivalent, and illustrate how
sequencing works:</p>
<p class="DOE-2Input"> <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-2 = 999.<br>CHILLERS-2 =
(CHLR-600,CHR-200,CHLR-400)</p>
<p class="DOE-2Input"> <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-2 = 999.<br>CHILLERS-2 =
(CHLR-600,CHR-200,CHLR-400)<br>CHILLERS-SEQ-2 = ( 1, 2, 3)
</p>
<p class="DOE-2Input"> <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-2 = 999.<br>CHILLERS-2 =
(CHLR-200,CHLR-400,CHLR-600)<br>CHILLERS-SEQ-2 = ( 2, 3,
1) </p>
<p class="MsoBodyText">In all these examples, CHLR-600 starts first, followed by
CHLR-200, followed by CHLR-400. To force CHLR-600 and CHLR-200 to always start
and run together, give them the same sequence number:</p>
<p class="DOE-2Input"> <font style="background-color: rgb(49, 106, 197);" color="#ffffff">LOADS</font>-THRU-2 = 999.<br>CHILLERS-2 =
(CHLR-200,CHLR-400,CHLR-600)<br>CHILLERS-SEQ-2 = ( 1, 2,
1) </p>
<p class="MsoBodyText"> </p></div><br><br><div class="gmail_quote">On Thu, Mar 3, 2011 at 11:58 AM, Fleming, Joe <span dir="ltr"><<a href="mailto:joe.fleming@tlc-eng.com">joe.fleming@tlc-eng.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal">How would one sequence chillers in the following way?</p>
<p class="MsoNormal"> </p><p class="MsoNormal">Chiller 1 - up to 150 tons</p><p class="MsoNormal">Chiller 2 - 150-350 tons (Chiller 1 is off in this range)</p><p class="MsoNormal">Chiller 1&2 - 350-500 tons</p><p class="MsoNormal">
</p><p class="MsoNormal">The Load range tab provides a "max load", but I believe that when I move to step 2 that equest is going to keep both chillers on. </p><p class="MsoNormal">i.e. for an input such as;</p>
<p class="MsoNormal">Chiller-Seq-Max Load</p><p class="MsoNormal">Chiller 1 - 1 - 150</p><p class="MsoNormal">Chiller 2 - 2 - 350 </p><p class="MsoNormal"> </p><p class="MsoNormal">Should you utilize the different "Load Ranges" here? </p>
<p class="MsoNormal">The help file for this sections is not as robust as the other help sections.</p><p class="MsoNormal"> </p><p class="MsoNormal">Thank You</p><p class="MsoNormal"> </p><p class="MsoNormal"> </p><p class="MsoNormal">
<b>Joe Fleming</b></p><p class="MsoNormal"><i><span style="font-size: 10pt; color: rgb(51, 51, 51);">E.I., LEED AP BD+C, BEMP</span></i></p><p class="MsoNormal"><i><span style="font-size: 10pt; color: rgb(51, 51, 51);">Mechanical Engineer II</span></i></p>
<p class="MsoNormal"><span style="font-size: 10pt;"> </span></p><p class="MsoNormal"><b><span style="color: rgb(0, 99, 99);">TLC Engineering for Architecture<br></span></b><b><span style="font-size: 10pt; color: rgb(0, 99, 99);">Your 2030 Challenge Partner</span></b><b><span style="color: rgb(0, 99, 99);"></span></b></p>
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</td><td style="padding: 0in;" valign="bottom"><p class="MsoNormal"><span style="font-size: 10pt;">954-418-9296</span><span style="font-size: 10pt;"></span></p></td></tr><tr><td style="padding: 0in;" valign="bottom"><p class="MsoNormal" style="text-align: right;" align="right">
<span style="font-size: 9pt; color: rgb(51, 51, 51);">direct: </span><span style="font-size: 9pt; color: rgb(85, 85, 85);"></span></p></td><td style="padding: 0in;" valign="bottom"><p class="MsoNormal"><span style="font-size: 10pt;">954-418-4591</span><span style="font-size: 10pt;"></span></p>
</td></tr><tr><td style="padding: 0in;" valign="bottom"><p class="MsoNormal" style="text-align: right;" align="right"><span style="font-size: 9pt; color: rgb(51, 51, 51);">website: </span><span style="font-size: 9pt; color: rgb(85, 85, 85);"></span></p>
</td><td style="padding: 0in;" valign="bottom"><p class="MsoNormal"><span style="font-size: 10pt;"><a href="http://www.tlc-engineers.com/" target="_blank"><span style="color: blue;">www.tlc-engineers.com</span></a></span></p>
</td></tr></tbody></table><p class="MsoNormal"><span style="font-size: 10pt;"> </span></p><p class="MsoNormal"><a href="http://www.tlc-engineers.com/" target="_blank"><span style="color: blue; text-decoration: none;"><img src="cid:image001.gif@01CBD9B2.FBA742C0" alt="http://www.tlc-engineers.com/images/TLC_Sig_Loc_Block.gif" border="0" height="49" width="700"></span></a></p>
<p class="MsoNormal"> </p></div></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Carol Gardner PE<br>
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