SciFi Module Cooling

Documents

Cooling system as built

Refrigerant :Now using C6F14, but we could replace it in the future by 3M's NOVEC649

See the CERN EN-CV detector cooling pages.

Manifold Design

Chiller: Julabo's Presto A80 *Julabo's Presto A80 operating manual

All numbers yet to be checked:

  • Transfer line (chiller <=> manifold) 2 18 m stainless steel 16mm ID (20mm OD ?) => VTL = 8 l
  • Manifold
  • Manifold lines (manifold <=> distributors) 8 5m copper 8mm ID (12mm OD ?) => VML = 3.14 l
  • Four distributor boxes connecting to flexibles inside or outside the frame (inner / outer):
    • Box 1: bottom inner flexibles
    • Box 2: upper inner flexibles
    • Box 3: upper outer flexibles
    • Box 4: bottom outer flexibles
  • Detector lines and flexibles:
    • Detector lines full copper length per loop (distributor <=> flexibles), supply length = return length, here the copper length of supply+return (one loop):
      • Box 1: 0.6 m
      • Box 2: 1.07 m
      • Box 3: 1.22 m
      • Box 4: 1.5 m
  • upload sketch / synoptic...
  • volume of liquid:
    • chiller Julabo A80 has an internal volume of about 5 l
    • transfer lines (16mm ID) about 8 l
    • tubes from manifold to dtributor boxes (8mm ID) about 1 l
    • adding some other volumes ... One arrives between 15 and 20 l.

Notes from meetings and discussions

Tests and installation

  • Tests at Point 8:
    • Manifold received from EPFL on 31 Mar 2015
    • Check leak tightness of manifold (week 15), help from Olivier Crespo-Lopez
    • Set up chiller and manifold with C6F14. Connect all four outlets/inlets, but leave only one for module tests. Mimic a resistance on the other three with dummy loads. (week 15)
    • Set up winCC control software, integrate to BGV winCC (week 18)
    • Test chiller control with external PT100 at manifold
    • Test chiller with external interlock ?
    • Monitor and quantify loss of fluid over time.
  • Tests at Point 4:
    • Install chiller and manifold, connect transfer lines (week XX)
    • Check leak tightness of transfer lines and manifold (week XX) with four dummy loads.
    • After connecting modules: perform final adjustment of four valves to equalize flow (week XX)
  • Permeation/diffusion of C6F14 through Silicone tubes: Valdir's presentation BGV meeting #70, 17.11.2015.
  • Changed to all metal during TS1 in Jun 2016 and further short accesses
  • 8jun2016, measured Leak rate at 5 bar nitrogen: Q = dP V / t = 200 mbar 4 l / 3600 s = 0.22 mbar l / s (at 5 bar pressure) in mass, using 28 g / (22.4 l 1000 mbar) this is F = 0.28 kg/s (at 5 bar pressure) which is way too much. What do we want ? We want say F < 1 kg / month = 0.4 mg / s = 3.14e-7 mbar l /s .... Can we detect a leak rate of 3.14e-7 mbar l /s ??
  • 25 july 2016 (Olivier Crespo-Lopez and Colin Barschel):
    • evacuated lines, filled with C6F14, checked circulation at 1bar, 15C => All OK, all SiPM temperatures are coherently going down after a few minutes to 15C.
    • Flow on flowmeters is quite equal, see here.
    • All four maniforld valves are almost 100% open.
    • Olivier checked also leaks with a C-F sensor and found none, except near the Julabo Presto cork (something may have to be done about that).
    • Tested remote control with cerhost on windows control PC. Works. Setpoint 12C, see here.
  • Monitoring of level / losses:
    • level calibration: prestoA80-level-calibration-with-level-index.png
    • monitoring pictures of level:
      PrestoA80-2016-07-25-11_21_08.jpg PrestoA80-2016-07-29-07_45_00.png PrestoA80-2016-08-02-22_21_00.png PrestoA80_2016-08-07_09h27.png PrestoA80_2016-08-08_12h37.png PrestoA80-2016-08-09_11h10.jpgREFILL PrestoA80-2016-08-09_11h15-JustAfterRefill.jpg PrestoA80-2016-08-11_16h13.jpg PrestoA80-2016-08-11_18h12.png PrestoA80-2016-08-15_11h30.png PrestoA80-2016-08-18_10h00.png PrestoA80-2016-08-23_16h40.png PrestoA80-2016-08-25_10h05.png PrestoA80-2016-08-29_11h40.png
    • Losses estimated to be about 1.3 +/-0.5 liters in 15 days at 14C and 1bar.
    • Refill of 2016-08-09: C6F14 can weight before / after filling 20.2 kg / 14.6 kg (difference 5.6 kg or 3.3 liters)
    • Intervened again with Sylvain on 11 aug 2016, but made no important change. Sylvain added some teflon on teh cork (between cork and o-ring). Unlikely that it will solve the problem. We decided we will produce a 70mm diameter plate (3mm thick) and close temporarily the hole with this plate and vacuum seal (future access).
    • new accurate determination of losses: 0.11-0.22 liter/day, see plot and level calibration here losses-JulAug2016.png levelcalib.png

  • 12-14 Sept 2016
    • Insulation of all connections finished.
    • Relay for power switch of the chiller installed.
      • Set at 10.10.10.61 (ECS network)
      • Can be controlled by logging in any of the bgvctrl / bgvgw machines as rootbgv and running firefox 10.10.10.61
      • Julabo power supply connected to Relay No1 which is the only one active at the moment
2016-09-20_JulaboCtrl.png

  • Monitor of level / losses
    • Since 16/09@10h the chiller has been set to -25C and the level indication was 5/8 with a load of ~60%.
    • TODO - log at the first change of level.
2016-09-20_10h_Julabo.png

To do list

  • Control software:
    • we want monitoring of level and more precise level measurement => contact Julabo
    • set trending, alarms with SMS in WinCC => Mariana
  • Consolidation of installed:
    • check loss of fluid over time
      • the cork is probably the main cuplrit. Do something about it ?
      • upgrade: insert a circulation pump with heat exchange between tranfer lines and PrestoA80, making a real closed-system for the C6F14 and use silicone oil in the Presto A80 (see NIKHEF SciFi test setup with closed-system for Novec 649).
    • power cycle the chiller from outside, ready but not yet connected (Bernd Dehning)
    • redo the external PT00 with proper connection
    • connect dry air interlock

Photos

2015/03/30: Manifold Assembly at EPFL

The full set of photos can be found here: http://phopchev.web.cern.ch/phopchev/BGV/BGV_Manifold_Photos_Florian_20150327.zip
20150319_181011.jpg 20150319_181039.jpg 20150325_102918.jpg 20150325_102930.jpg
20150325_103104.jpg 20150326_163856.jpg 20150326_163918.jpg 20150326_175901.jpg
20150326_175912.jpg 20150327_084634.jpg    

Topic attachments
I Attachment History Action Size Date Who Comment
Texttxt 2014_03_14--Summary_Cooling_for_BGV.txt r1 manage 4.9 K 2014-03-18 - 15:44 PlamenHopchev  
JPEGjpg 20150319_181011.jpg r1 manage 786.8 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150319_181039.jpg r1 manage 832.2 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150325_102918.jpg r1 manage 1064.5 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150325_102930.jpg r1 manage 2085.3 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150325_103104.jpg r1 manage 945.8 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150326_163856.jpg r1 manage 961.3 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150326_163918.jpg r1 manage 1177.8 K 2015-06-25 - 12:38 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150326_175901.jpg r1 manage 868.6 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150326_175912.jpg r1 manage 873.3 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 20150327_084634.jpg r1 manage 1886.8 K 2015-04-01 - 15:25 PlamenHopchev ManifoldPhotos1
JPEGjpg 2016-08-04_15.25.57.jpg r1 manage 1373.4 K 2016-08-10 - 11:13 MassiFL NIKHEF scifi test setup with closed-system for Novec 649
PNGpng 2016-09-20_10h_Julabo.png r1 manage 11.9 K 2016-09-20 - 19:14 AndreasAlexopoulos Julabo settings at 16/09/2016 and webUI
PNGpng 2016-09-20_JulaboCtrl.png r3 r2 r1 manage 52.4 K 2016-09-20 - 19:25 AndreasAlexopoulos Julabo settings at 16/09/2016 and webUI
Unknown file formatdocx LHC-BGV-EC-0003-1-0.docx r1 manage 4325.5 K 2015-01-21 - 15:36 PlamenHopchev  
PDFpdf LHC-BGV-EC-0003-1-0.pdf r1 manage 513.9 K 2015-01-21 - 15:36 PlamenHopchev  
PDFpdf MANIFOLD_90000_REV02.2_01.pdf r1 manage 459.7 K 2016-01-08 - 12:45 MassiFL manifold with type of connections
PDFpdf MANIFOLD_90000_REV02.2_02.2.pdf r1 manage 980.9 K 2016-01-08 - 12:45 MassiFL manifold with type of connections
PDFpdf Olivier_Girard--Master_Report.pdf r1 manage 9555.3 K 2014-10-29 - 17:47 PlamenHopchev  
JPEGjpg PrestoA80-2016-07-25-11_21_08.jpg r1 manage 2045.2 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
PNGpng PrestoA80-2016-07-29-07_45_00.png r1 manage 9.7 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
PNGpng PrestoA80-2016-08-02-22_21_00.png r1 manage 12.2 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
JPEGjpg PrestoA80-2016-08-09_11h10.jpg r1 manage 2328.4 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
JPEGjpg PrestoA80-2016-08-09_11h15-JustAfterRefill.jpg r1 manage 2082.8 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
JPEGjpg PrestoA80-2016-08-11_16h13.jpg r1 manage 2424.5 K 2016-08-11 - 18:14 MassiFL presto A80 level on 11 aug 2016
PNGpng PrestoA80-2016-08-11_18h12.png r1 manage 9.6 K 2016-08-11 - 18:16 MassiFL presto A80 level on 11 aug 2016
PNGpng PrestoA80-2016-08-15_11h30.png r1 manage 9.7 K 2016-08-29 - 11:52 MassiFL monitoring pictures of level
PNGpng PrestoA80-2016-08-18_10h00.png r1 manage 12.5 K 2016-08-29 - 11:52 MassiFL monitoring pictures of level
PNGpng PrestoA80-2016-08-23_16h40.png r1 manage 9.7 K 2016-08-29 - 11:52 MassiFL monitoring pictures of level
PNGpng PrestoA80-2016-08-25_10h05.png r1 manage 9.5 K 2016-08-29 - 11:52 MassiFL monitoring pictures of level
PNGpng PrestoA80-2016-08-29_11h40.png r1 manage 9.1 K 2016-08-29 - 11:52 MassiFL monitoring pictures of level
PNGpng PrestoA80_2016-08-07_09h27.png r1 manage 9.8 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
PNGpng PrestoA80_2016-08-08_12h37.png r1 manage 9.9 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
JPEGjpg debitmetres-20160725-IMG_5840.jpg r1 manage 1250.6 K 2016-07-25 - 13:59 MassiFL debitmetres 1st circulation through all-metal circuit 25-jul-2016
PNGpng levelcalib.png r1 manage 36.1 K 2016-08-29 - 11:53 MassiFL PrestoA80 level calibration in liters
PNGpng losses-JulAug2016.png r1 manage 37.3 K 2016-08-29 - 11:52 MassiFL C6F14 losses July-August 2016
PNGpng prestoA80-level-calibration-with-level-index.png r1 manage 32.0 K 2016-08-11 - 17:27 MassiFL picture of PrestoA80 level scale calibration
PNGpng prestoA80-level-calibration.png r1 manage 27.8 K 2016-08-10 - 10:50 MassiFL monitoring pictures of level
PDFpdf prestoA80-operatingmanual-19513044-V1.pdf r1 manage 3571.7 K 2016-08-10 - 11:04 MassiFL Julabo's Presto A80 operating manual
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Topic revision: r27 - 2016-09-21 - AndreasAlexopoulos
 
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