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<p>Pouyan,</p>
<p> Types 534 and 158 are quite similar mathematically. Type534
offers a lot more flexibility than Type158 offers. The idea in
developing Type158 was to make a simplified version of Type534
that intentionally did not offer so many options so that users
would not get confused by all of the different parameters and
possibilities. <br>
</p>
<p> For your other questions, if you have not already done so, I
would recommend referring to the documentation for each of the two
models. The documentation on Type158 can be found in the
04-MathematicalReference.pdf manual in .\Trnsys18\Documentation\
and the documentation on Type534 can be found in .\Trnsys18\Tess
Models\Documentation\11-StorageTankLibraryMathematicalReference.pdf</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 11/18/2021 04:41, Pouyan
Talebizadehsardari (Staff) via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:LO0P265MB489588D0C5C693D4B9F6D197CD9B9@LO0P265MB4895.GBRP265.PROD.OUTLOOK.COM">
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<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222">Does anyone can help me
about the differnce between the vertical cylinder thermal
storage tank without plug-in in TESS library (Type 534) and
noral thermal storage tank (Type 158)? Which one is more
accurate to use? and what is the heat loss coeficient since
the defult value is 2.5 kJ/h.m<sup>2</sup>.K in Type 158 and
5 kJ/h.m<sup>2</sup>.K in type 534?<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222">In addition, in Type 534,
what is the gas flue in the storage tank? Is it related to
the gas flue from the boiler?<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222">Thanks in advance<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;color:#222222">Pouyan<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<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
Madison, WI 53703 USA
P:+1.608.274.2577
<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>
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