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<p class="MsoNormal"><span lang="EN-US">Dear TRNSYS users,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am modelling a thermal energy storage system by using the Type 10 as thermal storage. As you know, the Type 10 can be charged
</span>by running hot air from the top to the bottom and discharged by running cold air from the bottom to the top of the bed<span lang="EN-US">.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In my simulation, I am going to first charge the Type 10 and following which discharge it. To this end, My initial temperature for the bed was 10 and with the aid of a fan, I set an entrance mass flow rate of 100 kg/hr
and temperature of 80 degrees Celsius for the bed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In addition to this, I determine a controller in such way when the average temperature of the bed reaches 70 C (during charging process), it turns off the fan and sets the flow rate in the opposite direction to 100 for
discharging process.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, it appears an error message when the discharging process attempts to begin.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I would appreciate it if anyone could assist me in this case.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Ali<o:p></o:p></span></p>
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