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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
The new heater should have that capability, but we will have to talk to safety again.</div>
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<span style="text-decoration: none; display: inline !important; background-color: rgb(255, 255, 255);" class="ContentPasted1">We just used the lowest temperature value in the SDS and</span> were trying to stay below the flash point of the mineral oil (184 C,
hardware interlocks set to 180 C). With the beampipe at 100C the highest we got to on the heater itself was 172 C.</div>
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<span class="ContentPasted0" style="margin: 0px; text-decoration: none; display: inline !important; background-color: rgb(255, 255, 255);">So we may be able to use a higher temperature due to the configuration we have. The next higher temperature we could use
as a limit is the lowest value for the boiling point (which has a huge range of 218 to 800 C). Even if we used the lowest value I think we could reach 120 C on the beampipe.</span><br>
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<span class="ContentPasted0" style="margin: 0px; text-decoration: none; display: inline !important; background-color: rgb(255, 255, 255);">For sure we want to stay below the auto-ignition temperature of 325 C though.</span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Rolf Ent <ent@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 12:43 PM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org>; Amrit Yegneswaran <yeg@jlab.org>; Brian Eng <beng@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: EIC beam line test stand flow test</font>
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Hi Brian, Marc,</div>
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this does look much better. Is there any way we can get the inner beam pipe termperature</div>
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to 120C and redo the test, or are there practical constraints that we can not go above 100C?</div>
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It seems to me that if there is 1 mm of aerogel we may have a workable solution (assuming</div>
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that this extra material does not kill performance)?</div>
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Rolf<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Brian Eng via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 11:49 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org>; Amrit Yegneswaran <yeg@jlab.org>; Brian Eng <beng@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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Attached is a summary table (as a PDF, wasn't sure best way to send this).</div>
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Some takeaways:</div>
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- We can get to the 100 C beam pipe temperature with this setup</div>
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- There's about a 20 C increase between the beampipe temperature vs silicon temperature</div>
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- However, taking into account that the beampipe started off 15 C warmer than the previous setup it isn't nearly as large and this 5 C differential is very similar to the Ansys simulation</div>
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End result we'd still lose about 15-20 C in the beampipe when there is enough flow (in the 1-2 m/s range) to get the silicon layer to ~30 C.</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Brian Eng via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 11:07 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org>; Amrit Yegneswaran <yeg@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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Quick and dirty plots from Excel, which is kind of a pain/slow to change plot settings with a file of this size.</div>
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I'll send a summary table shortly. On quick glance the beampipe temperature is maintained better with the aerogel than without it, but still maybe not good enough.</div>
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Marc,</div>
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Could you take another run and log from startup (room temp) to steady state then flow 10 and 25?</div>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Amrit Yegneswaran via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 10:33 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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marc,</div>
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make the plot from 1200 onwards i.e. for flow 150 -250 lpm</div>
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it appears that at these flow rates the temperature of RTD C is around 27 C</div>
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<div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 9:15 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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Hi Patrizia and Rolf,</div>
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The flow tests are complete. The beam line pipe was heated to ~100C and air was flowed at 10, 20, 50, 100, 150, 200, and 250 liters per minute. Each flow test ran for 3 hours. After each test the controls waited for 3 hours to allow monitored temperatures to
recover to approximately the same starting temperature for every test.</div>
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Sensor locations:</div>
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RTD_A, B, and C - inner surface of outer pipe (silicon)</div>
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RTD_D - outer surface of inner pipe (beryllium beam pipe)</div>
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RTD_H1, and H2 - outer surface of the heated pipe (for controls)<br>
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Brian,</div>
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The full data log is located at <a href="file:///O:\DSG\EIC\Software\LabVIEW\Teststand_data\0502_0504_flowtest.xlsx" data-auth="NotApplicable" id="LPlnk579716">
O:\DSG\EIC\Software\LabVIEW\Teststand_data\0502_0504_flowtest.xlsx</a></div>
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Regards,</div>
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Marc<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Brian Eng via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 11:49 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org>; Amrit Yegneswaran <yeg@jlab.org>; Brian Eng <beng@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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Attached is a summary table (as a PDF, wasn't sure best way to send this).</div>
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Some takeaways:</div>
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- We can get to the 100 C beam pipe temperature with this setup</div>
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- There's about a 20 C increase between the beampipe temperature vs silicon temperature</div>
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- However, taking into account that the beampipe started off 15 C warmer than the previous setup it isn't nearly as large and this 5 C differential is very similar to the Ansys simulation</div>
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End result we'd still lose about 15-20 C in the beampipe when there is enough flow (in the 1-2 m/s range) to get the silicon layer to ~30 C.</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Brian Eng via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 11:07 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org>; Amrit Yegneswaran <yeg@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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Quick and dirty plots from Excel, which is kind of a pain/slow to change plot settings with a file of this size.</div>
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I'll send a summary table shortly. On quick glance the beampipe temperature is maintained better with the aerogel than without it, but still maybe not good enough.</div>
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Marc,</div>
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Could you take another run and log from startup (room temp) to steady state then flow 10 and 25?</div>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Amrit Yegneswaran via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 10:33 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org>; Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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marc,</div>
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make the plot from 1200 onwards i.e. for flow 150 -250 lpm</div>
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it appears that at these flow rates the temperature of RTD C is around 27 C</div>
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<div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Dsg-eic_tracker <dsg-eic_tracker-bounces@jlab.org> on behalf of Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Sent:</b> Thursday, May 4, 2023 9:15 AM<br>
<b>To:</b> Marc Mcmullen via Dsg-eic_tracker <dsg-eic_tracker@jlab.org><br>
<b>Cc:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> [Dsg-eic_tracker] EIC beam line test stand flow test</font>
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Hi Patrizia and Rolf,</div>
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The flow tests are complete. The beam line pipe was heated to ~100C and air was flowed at 10, 20, 50, 100, 150, 200, and 250 liters per minute. Each flow test ran for 3 hours. After each test the controls waited for 3 hours to allow monitored temperatures to
recover to approximately the same starting temperature for every test.</div>
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Sensor locations:</div>
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RTD_A, B, and C - inner surface of outer pipe (silicon)</div>
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RTD_D - outer surface of inner pipe (beryllium beam pipe)</div>
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RTD_H1, and H2 - outer surface of the heated pipe (for controls)<br>
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Brian,</div>
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The full data log is located at <a href="file:///O:\DSG\EIC\Software\LabVIEW\Teststand_data\0502_0504_flowtest.xlsx" data-auth="NotApplicable" id="LPlnk579716">
O:\DSG\EIC\Software\LabVIEW\Teststand_data\0502_0504_flowtest.xlsx</a></div>
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Regards,</div>
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Marc<br>
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