<div dir="ltr"><div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Hello.</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">I have a question regarding slab-on-grade hydronic floor under the "plant and systems" menu.</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<br></div><div><font color="#222222" face="arial, sans-serif">I'm trying to create a solar heating system with the following components: </font></div><div><font color="#222222" face="arial, sans-serif">1) "simplified flat plate solar collector",</font></div>
<div><font color="#222222" face="arial, sans-serif">2) "Variable speed domestic WHC pump" and </font></div><div><font color="#222222" face="arial, sans-serif">3) "slab-on-grade hydronic floor".</font></div>
<div><font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif">I have linked all these three components and defined where heat is being injected in the zone. I have also set up the control loop with sensor, actuator and defined period data. But when I want to run a simulation and check the results I just get a message saying "Library is incomplete or corrupt... Do you want to - attempt to continue (DANGEROUS) or - give up?"</font></div>
<div><font color="#222222" face="arial, sans-serif"><br></font></div><div style><font color="#222222" face="arial, sans-serif">I don't understand what is wrong.</font></div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">I know that a former student at my University has built up a similar system, instead of a hydronic floor, he used a hot water tank, and he managed to run simulations. He had 4 connections, and not 3 as I have. But I don't understand why one would the fourth connection..? <br>
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<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">He had the following connections:</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
recieving comp. - sending comp.:</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Solar collector - Pump (mass frac.: 1, temp: 0)</div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Hot water tank - Solar collector (mass frac.: 1, temp: 0)</div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Pump - Hot water tank (mass frac.: 1, temp: 0)</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Hot water tank - Pump (mass frac.: 0, temp: 20)</div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">He told me that he found a similar connection in one of esp-r exemplar models, therefore he implemented it in his model. But I haven't found it myself.</div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">My question is: </div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">What kind of connections are needed to run simulations for a system with a solar collector, pump and hydronic floor?</div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<div>I am still a novice using ESP-r, so any replies would be appreciated.</div><div> </div><div>Regards, <span style="background-color:rgb(255,255,204)">Ida Auråen</span></div></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
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