Tracker Thermal Control System 2015年9月13日星期日 2015年9月13日星期日...

Tracker Thermal Control System

2023年4月21日 1

AMS-TTCS Status Report

AMS-TIM meeting, CERN, Oct.28th, 2008

ZH He

On behalf of SYSU team:

Y Chen, ZC Huang, TX Li, SS Lu, DC Mo, XM Qi, XH Sun, GL Tong, ZX. Wang, ZL Weng, RA You, YC Zhang, Z Zhang.


2023年4月21日 2

OutlineOutline

• Working meeting in Zhuhai

• QM condenser test

• TTCS Functional Test for secondary loop in 3d layout

• Exceptional hot case test result

• Evaluation of air cooling solution

• Documents finished

Tracker Thermal Control SystemTTCS Zhuhai Working MeetingSeptember 29th to October 3rd

2023年4月21日 3


Condenser QM Test StatusCondenser QM Test Status

2023年4月21日 4arrival

2008/09/28 2008/09/29


2023年4月21日 5Working hard to fix


2023年4月21日 6He leak test: passed


2023年4月21日 7

Heater mounting


2023年4月21日 8

Heaters mounted


2023年4月21日 9

Thermal couple mounting


2023年4月21日 10

Heater plate mounted


2023年4月21日 11

Thermally insulated


2023年4月21日 12

Put into the chamber


2023年4月21日 13Connected to the test loop


TTCS FUNCTIONAL TEST FOR TTCS FUNCTIONAL TEST FOR SECONDARY LOOP IN 3D LAYOUTSECONDARY LOOP IN 3D LAYOUT

2023年4月21日 14


Walk- in Climate Chamber

Shorten the evaporator outlet

tubes to save room

Wake Radiator located drawn for clarity ( not build)

Wake Condenser located in bench top climate

chamber( located at the far back)

RAM and WAKE ( the tube length is kept constant )

RAM Condenser located in bench top climate

chamber ( located at the far back)

D

Top

B

Climate chamber

door

2023年4月21日 15

Layout of TTCS Layout of TTCS 22ndnd Loop Loop


2023年4月21日 16

TTCS Functional Test TTCS Functional Test for 1for 1stst loop in 3d Layout loop in 3d Layout


2023年4月21日 17

TTCS TTCS Functional Functional Test for 2Test for 2ndnd loop in 3d loop in 3d

LayoutLayout


2023年4月21日 18

• Objective:– To test the performance of TTCS in the orientation

as that in the TVT test and the Beam test.– To check any difference of performance between

the 1st and 2nd loop in gravity.

• Test items:– Test cases: extremely hot (23C), coldest (-15C)

– Operation and control test: Start-up, shut-down, heat load change, heat load imbalance, pump speed change, rapid change of condenser temperature.

Some representative results are shown below


2023年4月21日 19

Start-up Start-up

Set point

In coldest case with start-up heaterIn extremely hot case without start-up heater


2023年4月21日 20

Heat load imbalance test in extremely hot caseHeat load imbalance test in extremely hot case


2023年4月21日 21

Heat Load Change TestHeat Load Change Test

In coldest casein extremely hot case


2023年4月21日 22

Rapid Change of Condenser TemperatureRapid Change of Condenser Temperature

Pump_inlet

Set point


2023年4月21日 23

Pump speed changePump speed change

3g/s

2g/s

4g/s

In coldest casein extremely hot case


2023年4月21日 24

Walk-in Climate Chamber

Front View to (Walk-in) Climate Chamber Looking from D-side

Top

A

C

Bench Top Climate Chamber

Condensers

Connecting tubing located in a plastic pipe connected to the controlled air of

the climate chambers. Additional outside insulation to avoid condensation on the

plastic tube

Vapor flowing down Vapor flowing down for 2for 2ndnd loop loop

Open to discussOpen to discuss


2023年4月21日 25

Pump speed (RPM)

DPS (mbar) for stable loopPrimary loop (3D) Secondary loop(3D)

4000　 137mbar (dry-out )

　

5000　 200mbar (220mbar for g)

　 210mbar (dry-out ) (200mbar for g)

7500 　 420mbar 　 440mbar

10000 　 730mbar 　 740mbar

Pressure Drop Comparison in Hottest CasePressure Drop Comparison in Hottest CaseOpen to discussOpen to discuss


2023年4月21日 26

Summary Summary

• TTCS functional test is done for the 2nd loop in 3d layout.• The loop in 2nd 3d layout operated very well and passed

the test; it has some what lower performance than that in 1st loop 3d layout.

• Suggestion for control scenario (done by ground control):– Do not run the loop at pump speed lower than 7500RPM in any

tracker operation case for ground test.– Use the start-up heater to depress pressure spike caused by

superheating during the start-up process in nominal case and cold case.


Exceptional hot case TestExceptional hot case Test

• Purpose– To evaluate the cooling capacity and stability of

TTCS in the exceptional hot case, Tsp>23C– To provide reference of cooling scheme for beam

test and ground functional check.

• Tsp=26C Tevp 27C Ttracker 37C• For secondary Loop (worst case)

2023年4月21日 27


Setpoint Change in Exceptional hot case TestSetpoint Change in Exceptional hot case Test

Tsp: 23C to 26C

2023年4月21日 28


Tsp=26 C; T=2.5C;

Heat Load Change in Exceptional Hot Case Test Heat Load Change in Exceptional Hot Case Test

2023年4月21日 29


2023年4月21日 30

Summary Summary

• TTCS 2nd loop in 3d layout can operate at the set point temperature of 26C, with subcooling of 2.5C and heat load of 200W.

• In the exceptional case, the vapor quality is above design value (0.4).


Air Cooling Scheme EvaluationAir Cooling Scheme Evaluation

• From simulation, temperature difference between the radiator surface and the return CO2 liquid in condenser outlet is about 7C for heat load of 144W;

• For subcooling of 2C, the radiator surface temperature must be 9C below the set point temperature;

• For the highest set point temperature of 26C, the radiator surface temperature must be below 17C.

2023年4月21日 31


Solution Solution (presented by Johannes)(presented by Johannes)

• Employing force air panels on the top of the radiators to produce turbulent flowing effect, and forming a close air loop;

• Blowing chill air on the top the radiators with tracker working at half of its maximum power (72W).

2023年4月21日 32


Documents Finished since last TIMDocuments Finished since last TIMTitle DOC.# Date Prepared by

TTCS EXTREME-TEST PROCEDURE FOR 3D SECONDARY LOOP

TTCS-SYSU-TEST-TPR-014-1.0

2008-8-7 X.H.Sun

CHANGE SETPOINT TESTTTCS-SYSU-TEST-

TRP-008-1.02008-8-2

Guinian Tong

TTCS EXTREME TEST REPORT FOR 3D SECONDARY LOOP

TTCS-SYSU-TEST-TRP-009-1.0

2008-8-7 X.H.Sun

TTCS EM TEST REPORT FOR both 1ST AND 2ND LOOP IN 3D LAYOUT

TTCS-SYSU-TEST-TRP-010-1.0

2008-8-25X.H.Sun, Y.Chen

Investigation AMS TTCS air coolingTTCS-SYSU-SIMU-RP-

007-1.02008-10-22 Shushen Lv

Heat Pipe Failure Sensitivity AnalysisTTCS-SYSU-SIMU-TN-

005-2.02008-07-22 D.C.Mo

simulation on TVT testTTCS-SYSU-SIMU-TN-

006-1.02008-10-15 D.C.Mo

TTCS QM CONDENSER PERFORMANCE AND THERMAL

CYCLING TEST PROCEDURES

TTCS-SYSU-TEST-TPR-013-3.0

2008-10-9Z.ZhangZL.Weng

2023年4月21日 33


2023年4月21日 34

Tracker Thermal Control System 2015年9月13日星期日 2015年9月13日星期日...

Documents

Transcript of Tracker Thermal Control System 2015年9月13日星期日 2015年9月13日星期日...