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<p>Hoofar,</p>
<p> The 11th parameter of Type557a (GHP Library: Ground Heat
Exchangers: Vertical: U-Tube: Standard: ) asks you to specify the
number of u-tubes per bore.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<p> <br>
</p>
<div class="moz-cite-prefix">On 03/09/2020 07:09, Hemmatabady,
Hoofar via TRNSYS-users wrote:<br>
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cite="mid:b9f0dabf77444963af748dc1b30b9bba@geo.tu-darmstadt.de">
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<p>Hello everyone,</p>
<p><br>
</p>
<p>I have a question regarding type 557 in TRNSYS. There are
mainly two type (U-tube & Tube-in-tube). How can a
<u>2U-tube</u> ground heat exchanger be modelled? Should I
change some parameters of the single U-tube one?</p>
<p>Is there probably a more user-friendly mathematical reference
for type 557 other than type557-DST manual (I mean overview
and mathematical reference like other TRNSYS components)?</p>
<p><br>
</p>
<p>Best regards,</p>
<p>Hoofar Hemmatabady</p>
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<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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