<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Prof Bina,</p>
<p> Type927 models an on/off heat pump that has a constant speed
compressor. In order to maintain a desired outlet temperature you
would need to use a model of a variable speed compressor heat pump
that can internally adjust its capacity. We have written such a
model and it is scheduled for release sometime later this year.</p>
<p> A double u-tube well can be modeled using Type557, which is in
the TESS GHP library.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 08/20/2020 04:27, saeid
mohammadzadeh via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CABCqxAJVBGG2QqnMFA5+Qq-8ZE-tTq4MTo3Y7-JM_pOMZUEqyA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small">Dear
users;</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small"><br>
</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small">I
hope you all are well and safe. I am modeling a water to water
ground source heat pump (Type 927) in our lab and would like
to validate it with the actual data. </div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small">I
have two main questions as follows:</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small">1-
How we can control the heat pump unit based on the outlet load
temperature (for example 40 C in winter). Since there is no
thermostat in the room, only we give the desire outlet load
temperature (temperature of the water that goes to the fan
coil in the room). Therefore, HP maintains this temperature
all time. </div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small">2.
In the gound loop side, the fluid goes to the two parallel
vertical "double" U-tube wells. So my question is how is it
possible to model Double U_tube in TRNSYS? </div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small"><br>
</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small">Thank
you very much in advance, I am looking forward to hearing from
you.</div>
<div class="gmail_default"
style="font-family:arial,helvetica,sans-serif;font-size:small"><br>
</div>
<div>
<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div
style="color:rgb(0,0,0)"><i
style="font-size:12.8px"><font size="2" color="#000000"><i><font
face="arial,
helvetica,
sans-serif"
color="#000000">Best
Regards</font></i></font></i><br>
</div>
<div
style="color:rgb(0,0,0)"><i><font
size="2"
face="arial,
helvetica,
sans-serif">Saeid
Mohammadzadeh
Bina, Dr. (Eng.)</font></i></div>
<div
style="color:rgb(0,0,0)"><i
style="font-size:12.8px;color:rgb(34,34,34)"><font size="2" face="times
new roman, new
york, times,
serif"
color="#000000"><i><font
size="3"
face="arial,
helvetica,
sans-serif"
color="#000000">-------------------------------------------------</font></i></font></i></div>
<div
style="color:rgb(0,0,0);font-family:HelveticaNeue,"Helvetica
Neue",Helvetica,Arial,"Lucida Grande",sans-serif"><font
size="2" face="times
new roman, new york,
times, serif"
color="#000000">
<div align="left"><font
style="font-size:16px" size="3" face="arial, helvetica, sans-serif"><font
size="2"
face="times
new roman, new
york, times,
serif"
color="#000000">
<div
align="left"><em><font
face="times
new
roman,serif">Akita
<var></var>University</font></em><br>
</div>
</font></font><font
face="arial,
helvetica,
sans-serif"><font
size="2"
face="times
new roman, new
york, times,
serif"
color="#000000">
<div
align="left"><span
style="font-family:"Times New Roman",serif"><i>Graduate
school of
International
Resource
Sciences</i></span><font
face="times
new
roman,serif"><em>.<br>
1-1 Tegata
gakuen-machi,
Akita
010-8502,
Japan</em></font></div>
<div
align="left"><font
face="times
new
roman,serif"><em>Tel: </em></font><em
style="font-family:"times new roman",serif">+815068665026
(Japan)</em></div>
<div
align="left"><em
style="font-family:"times new roman",serif">
+989141011757
(Iran)</em><em
style="font-family:"times new roman",serif"> </em></div>
</font></font></div>
<div align="left"><font
style="font-size:16px" size="3" face="garamond, new york, times, serif"><em>E-mail: </em></font><a
href="mailto:s.mohammadzadeh66@gmail.com" target="_blank"
moz-do-not-send="true"><em>d9515254@s.akita-u.ac.jp</em></a><em
style="font-size:16px"> </em></div>
<div
style="font-size:16px"
align="left"><em
style="font-family:garamond,"new
york",times,serif;font-size:medium;background-color:rgba(0,0,0,0);margin:0px;padding:0px;color:blue">
<a
href="mailto:mohammadzadehsaeid@yahoo.com"
rel="nofollow"
style="font-family:garamond,"new
york",times,serif;font-size:medium;background-color:rgba(0,0,0,0);margin:0px;padding:0px;color:blue"
target="_blank" moz-do-not-send="true">mohammadzadehsaeid@yahoo.com</a></em></div>
</font><font
style="font-size:16px"
size="2" face="times
new roman, new york,
times, serif"
color="#000000">
<div align="left">
<div
style="font-family:HelveticaNeue,"Helvetica
Neue",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:16px"><i><font
size="2"
face="times
new roman, new
york, times,
serif"
color="#000000"><i><font
size="3"
face="arial,
helvetica,
sans-serif"
color="#000000">-------------------------------------------------<br>
<br>
</font></i></font></i></div>
</div>
</font></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a>
<a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
</body>
</html>