Thermal Control System TCS status report

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Thermal Control System (TCS)status report

• Dar-Jen Sun (AIDC)
• Marco Molina (CGS)

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• AIDC status report
• Jig design
• Test coupon
• FM H/W preparation
• CGS/SDU status report
• TCS STA integration complete!
• Radiators mechanical and thermal design
• CAB LHP ANALYSIS
• Heaters and thermostats procurement

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TCS STA Integration completed

• Main radiators STA
• Links STA
• Brackets FM STA
• crates STA
• Tracker radiators STA
• Rods FM

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AMS02 STA with SDU
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Radiators design status

• G. Duchini (CGS)
• A. Assenza (CGS)
• I.Corradino (CGS)
• C. Vettore (CGS)
• Y. Qu (SDU)
• F. Yan (SDU)
• X. Zhu (SDU)
• ZC. Zhao (SDU)

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Main radiator (RAM) thermal design status

• Heat pipe bending constraint (as recommended by
  the HP manufacturer) has been implemented
• Radiator heater lay-out (two different sets) has
  been confirmed
• J electronics Switch-on sequence analyzed and
  verified
• JPD Close-On-Rise thermostats set-point selected
  (-25C/-19C)
• JPD Close-On-Rise thermostat position depending
  on TVT results on first J/JT/JPD set

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RAM radiator heat pipe schedule

• 15th March 2007 heat pipes shape delivery to
  Iberespacio
• 4th April 2007 16 drawings approval
• 29th May 2007 heat pipes ready in Madrid

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TRACKER radiator heat pipe schedule

• 5th March 2007 heat pipes shape delivery to
  Iberespacio
• 27th March 2007 7 drawings approval
• 17th May 2007 tracker heat pipes ready in Madrid

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WAKE radiator heat pipes

• 26th April 9th May 2007 heat pipes shape
  delivery to Iberespacio
• 10th May 29th May 2007 drawings approval
• 1th July 19th July 2007 WAKE heat pipes ready
  in Madrid (to be confirmed by IE)

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RAM Heat pipe layout modification
New Drawing
Old Drawing
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RAM temperature predictions (hottest case)
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Main radiator (WAKE) thermal design status

• Heat pipe bending constraint (as recommended by
  the HP manufacturer) has been implemented
• PDS mass saving guidelines implemented
• Embedded heat pipe cold-plate has been replaced
  by a smarter heat pipe layout
• Final heat pipe layout on-going
• First set of 3-D heat pipes (not affected by the
  heat pipe re-arrangement) ready to be sent to
  pipe manufacturer

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WAKE RADIATOR HP LAYOUT REDESIGN
Original layout 2 horizontal20 vertical
Current Layout ------ 3U HP
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RAM RADIATOR ASSY
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RAM RADIATOR ASSY
RADIATOR
REMOVABLE HANDELS
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RAM RADIATOR ASSY
REMOVABLE POLYCARBONATE PROTECTION (4 PARTS)
(Spaced from the White Painted surfaces)
REMOVABLE PROTECTION
RADIATOR
REMOVABLE HANDLE
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RAM RADIATOR ASSYRADIATOR PANEL SECTIONS
ROHACELL and SKINS JOINT
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RAM RADIATOR ASSY HEAT PIPE VENTING
HEAT PIPE VENTING HOLE
HEAT PIPE
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RAM RADIATOR ASSYTYPICAL INSERTS POSITIONING
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TRACKER RADIATOR ASSY
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TRACKER RADIATOR ASSY
REMOVABLE HANDLES
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TRACKER RADIATOR ASSY
REMOVABLE POLYCARBONATE PREOTECTIONS (3 PARTS)
(Applied on the White Painted surfaces)
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WAKE RADIATOR
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WAKE RADIATOR STATUS

• First issue for INNER SKINS and OUTER SKINS
  drawings delivered on 20.04.07.
• To be implemented
• I/F holes for white paint protection panels on
  outer skins
• I/F holes to cab lhp on outer skins
• I/F holes to TB and Thermostats on inner skins

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INSERTS example of a bonding insert
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WAKE RADIATOR ASSEMBLY
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RAM RADIATOR BONDING to USS
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WAKE RADIATOR BONDING to USS
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Changes to the FM design (1)

• After STA integration
• MID brackets length has been reduced by 2mm

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Changes to the FM design (2)

• PANEL cut-out reduced by 3mm
• for MID-BRACKETS (both radiators)
• CAB mounting bolts on lower side of box ( only
  WAKE)

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CAB 2 phase model

• Gongming Xin (SDU)
• Stefano Zinna (UniBG)

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CAB LHP 2 Phases Modeling

• Cases needed to run
• Steady State of CAB in Worst Hot Case (105W)
• Steady State of CAB in Worst Cold Case (35.5W)
• CAB Ramp-UP process
• In different CAB/LHP mode
• CAB
• Ramp Up nominal mode (6 CCS CS)
• Ramp Up module failure mode (5 CCS CS)
• LHP
• Nominal mode (2 LHPs working)
• Failure mode (1 LHP failure)

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• Modeling start with
• SINDA/FLUINT
• parameters based on the preliminary design of CAB
  LHP
• One LHP working (Failure mode of LHP) in the
  beginning.

CAB
LHP Condenser Layout on the Wake Radiator
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Characteristics of 2 phases model (1 LHP)

• Working fluid--Ammonia
• 4446 thermal nodes, 42 fluid lumps
• Conductance to radiator 800(W/m2/K)Area
• Conductance from Eva-Saddle to CAB Baseplate
  1000(W/m2/K)Area

• Evaporator model shown as below

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Status

• The modeling has been completed with
• Parametric analysis done for some critical
  parameters (e.g. power, heat transfer coefficient
  in wick-Uw, Back conductance-Uback, and the ratio
  of Uw/Uback)
• Model running for one LHP in both worst hot and
  worst cold cases for CAB
• Results achieved for both cases, but need to be
  reviewed.
• Ramp-Up process (LHP failure mode) ready to run
  once the model is validated.

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Heaters and thermostats procurement

• M. Molina

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Thermostats (19 for the EHV, 5 for the Ecrate
and 10 for the RHV)

• Two options
• US source 18 weeks lead time export license
• E.G. 12 weeks for ECAL thermostats
• E.G. 16 weeks for ECAL thermostats intermediate
  consignee change (to allow installation in
  Annecy)
• European source 26 weeks, no license required

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Thermostats

• Procurement started, on the basis of verbal
  agreement with INFN PI (F. Cervelli and M.
  Incagli) on 26th March 2007
• J. Berdugo statement at JSC we will follow
  Franco CERVELLI, who else? taken literally
• RHV thermostats ordered as well
• Paperwork (proposals from CGS to INFN and
  CIEMAT) still ongoing as per today (NO PROBLEM,
  provided we get the purchase order)
• 5 thermostats (on stock) for E-crates expected
  within 4 weeks (End of May 2007)
• All the others 29 Thermostats expected for
  September 24th

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Heaters

• 11 weeks lead time
• Expected delivery June 15th, 2007