<div dir="auto">Dear Ali <div dir="auto"><br></div><div dir="auto">I think that I can help if you send me your model.</div><div dir="auto"><br></div><div dir="auto">Good luck</div><div dir="auto">Mukhtar</div><div dir="auto"> </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">في السبت، ٢٨ أغسطس ٢٠٢١ ٢٣:٢٣ Ali Shahrouzian via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> كتب:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Dear TRNSYS users,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I am modelling a closed loop containing of Type 670 (water to air HX), Type 10 (thermal storage) and Type 642 (Fan). In fact, I am going to charge the thermal storage by using hot air exiting from Type 670.
<u></u><u></u></p>
<p class="MsoNormal">You can imagine, cold air after passing through the Type 670 and exchanging heat with hot water (90 C) , becomes hot (75 C) and then enters the Type 10 (rock bed thermal storage). In this stage, hot air transfers its energy to storage.
Finally, cold air enters the type 670 fan and returns to it.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">By passing the time, the thermal storage becomes gradually charged, so the outlet and inlet temperatures are approximately equal. Therefore, the inlet and outlet temperatures of the Type 670 (HX) must also be the same. However, after charging
the thermal storage, the HX outlet temperature increases continuously (<span style="color:black;background:white">It reaches a temperature of 105 degrees Celsius, which is higher than the temperature of water as its heat source</span>) until an error message
is displayed. <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I would appreciate it if anyone could assist me in this case.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Best Regards,<u></u><u></u></p>
<p class="MsoNormal">Ali<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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