<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">Hi Joe,<div>Thanks for your reply!</div><div>Is the DOE-2.2 manual the DOE help in the eQuest?</div><div>Esmi<br><br><br><br><br><div></div><div id="divNeteaseMailCard"></div><br>At 2013-04-18 03:17:00,"Joe Huang" <yjhuang@whiteboxtechnologies.com> wrote:<br> <blockquote id="isReplyContent" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
Do you not have a copy of a DOE-2.2 or DOE-2.1E manual? That would
make it hard to understand how DOE-2 works.<br>
DOE-2 has many performance curves, depending on the type of
equipment. The EIR-FT curves are either bi-linear or bi-quadratic
functions of the entering wetbulb and outdoor drybulb temperature.
The EIR-FPLR curves can be linear, quadratic, or cubic functions of
the Part Load Ratio (PLR). <br>
<br>
By the way,what I said yesterday was in reference to packaged
SYSTEMS. If your model contains a PLANT model with a Chiller, then<br>
the keywords for the chiller performance curves change somewhat.<br>
<br>
Joe<br>
<pre class="moz-signature" cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
<a class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.whiteboxtechnologies.com">www.whiteboxtechnologies.com</a>
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
<br>
On 4/16/2013 11:09 PM, Esmireta wrote:
<blockquote cite="mid:935b773.6a8c.13e169d22c4.Coremail.e2fye2@163.com" type="cite">
<div style="line-height: 1.7; color: rgb(0, 0, 0); font-size:
14px; font-family: arial;">Hi Joe,
<div>In the simulation of a district cooling system, the
guidance requires a virtual plant with a constant average
efficiency.</div>
<div>In the DOE curves, how can I know the meaning of the
equation and the coefficients in it? It seems there is no
useful information in the DOE help.</div>
<div>Thanks!</div>
<div>Esmi<br>
<br>
<br>
<br>
<br>
<br>
At 2013-04-17
10:35:35,"Joe Huang" <a class="moz-txt-link-rfc2396E" href="mailto:yjhuang@whiteboxtechnologies.com"><yjhuang@whiteboxtechnologies.com></a>
wrote:<br>
<blockquote id="isReplyContent" style="padding-left: 1ex;
margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204,
204, 204);"> DOE-2 modifies the COOL-EIR using several
curves COOL-EIR-FT as a function of outdoor conditions and
COOL-EIR-FPLR as a function of the Part Load Ratio. I
suppose you could set those to be constant. Another way
would be to just take the Cooling Load from the SS-D report
and divide that by your constant COP. But my question would
be, why do you want to do that ?<br>
<br>
Joe<br>
<pre class="moz-signature" cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.whiteboxtechnologies.com">www.whiteboxtechnologies.com</a>
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
<br>
On 4/16/2013 6:55 PM, Esmireta wrote:
<blockquote cite="mid:1c92a31c.2da3.13e15b3f21b.Coremail.e2fye2@163.com" type="cite">
<div>Dear all,
<div>I wonder how to set the COP of a chiller as
constant? after I set the chiller type, the electric
input ratio type is determined, which means the
self-made constant curve cannot be input.</div>
<div>Thanks!</div>
<div>Esmi</div>
</div>
<br>
<br>
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