AMS Tracker Thermal Control System (TTCS) TTCS Design Description
TTCS simulation status report
description
Transcript of TTCS simulation status report
2023年4月21日
Tracker Thermal Control System
TTCS simulation status reportTTCS simulation status report
SYSU: S.S.Lv, D.C. Mo, Z.C. Huang, Z.H. He
NLR: E. van Johannes, P.Aswin
CGS: C.Vettore, M.Molina
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Tracker Thermal Control System
OutlineOutline
• Status of TTCS modeling
• Simulation result– Cold orbit result– Hot orbit result
• Summary
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Status of TTCS modelingStatus of TTCS modeling
• Modified and debugged the cmdv1.3 (combined model draft version 1.3)– Reversed the flow direction– Considered the contact conductance between the h
eatpipe and the facesheet of the radiator– Modified the thermal link of peltier– IF data debugged etc.
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Reverse the flow directionReverse the flow direction
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Contact conductance between the face sheet Contact conductance between the face sheet and HPand HP
Outside facesheet 5xxxx
ROHACELL HP 6xxxx
Inside facesheet 7xxxx
Condenser 9xxxx
MLI 10xxxx
5xxxx 6xxxx 7xxxx 9xxxx
Layers of the radiator
R56`=8.27E4W/K R56=181W/K
R67`=3.07E5W/K
R67=188W/KR79`=171W/K
R79=209W/K
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Cases selected for simulationCases selected for simulation
Beta Angle SuggestedEnv
Screening rank
TTCB-P TTCB-S Ram RadPeak
Ram RadAvg
Wake RadPeak
Wake RadAvg
RadAvg
Delta T
75 -15-20-15 hot H1 H5 H1 H1
75 -15+00-15 hot H2 H2 H2
75+15+15+15 cold C1 C1 1
75 -15+00+15 cold C6 C1 C1
-75+00+00-15 cold C9 C1
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Results of cold casesResults of cold cases
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Temperature and QBYPR=+75+15+15+15
170
190
210
230
250
270
290
3. 7 4. 9 6. 2 7. 4 8. 7 9. 9 11. 2 12. 4 13. 7 14. 9 16. 2 17. 4Time(hr)
Tem
pera
ture
(K
) a
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
Sub
cool
ing(
K)
/Q (
W)
0
T_set(TL1000)
T_HX_liq_in(TL2101)
T_HX_liq_out(TL5000)
T_cds_out_ram(TL10032)
T_cds_out_wake(TL10033)
T_Uss(TTCBP.27100)
T_HX_2phase_in(XL10023)
T_HX_2phase_out(XL10025)
T_subcooling(TL1000-TL1)
Q_uss(HR1517~1520)
Q_preheater(PHbot+PHtop)
Q_cold orbit(Qheat)
Q_heatleak from Acc(HR1132)
Cold case1: BYPR=+75+15+15+15Cold case1: BYPR=+75+15+15+15
Tset=258KFR=2g/s
Cold orbit heaters
Pre-heaters
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Temperature and QBYPR=+75-15_0+15
170
180
190
200
210
220
230
240
250
260
270
3.7 4.9 6.2 7.4 8.7 9.9 11.2 12.4 13.7 14.9 16.2 17.4Time(hr)
Tem
pera
ture
(K
) a
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
Sub
cool
ing(
K) /Q
(W
) 0
T_set(TL1000)
T_HX_liq_in(TL2101)
T_HX_liq_out(TL5000)
T_cds_out_ram(TL10032)
T_cds_out_wake(TL10033)
T_Uss(TTCBP.27100)
T_HX_2phase_in(XL10023)
T_HX_2phase_out(XL10025)
T_subcooling(TL1000-TL1)
Q_uss(HR1517~1520)
Q_preheater(PHbot+PHtop)
Q_cold orbit(Qheat)
Q_heatleak from Acc(HR1132)
Cold case2: BYPR= Cold case2: BYPR= +75-15_0+15+75-15_0+15
Cold orbit heaters
Tset=258KFR=2g/s
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Cold case3: BYPR= -75_0_0-15Cold case3: BYPR= -75_0_0-15
Temperature and QBYPR=-75_0_0-15
170
180
190
200
210
220
230
240
250
260
270
3.7 4.9 6.2 7.4 8.7 9.9 11.2 12.4 13.7 14.9 16.2 17.4Time(hr)
Tem
pera
ture
(K
) a
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
Sub
cool
ing(
K) /Q
(W
) 0
T_set(TL1000)
T_HX_liq_in(TL2101)
T_HX_liq_out(TL5000)
T_cds_out_ram(TL10032)
T_cds_out_wake(TL10033)
T_Uss(TTCBP.27100)
T_HX_2phase_in(XL10023)
T_HX_2phase_out(XL10025)
T_subcooling(TL1000-TL1)
Q_uss(HR1517~1520)
Q_preheater(PHbot+PHtop)
Q_cold orbit(Qheat)
Q_heatleak from Acc(HR1132)
Tset=258KFR=2g/s
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Comparison of the cold orbit resultsComparison of the cold orbit results
CasesBYPR
Subcooling(K) cold orbit heater duty cycle
+75+15+15+15
11.3~15.8 51%
+75-15_0+15
16.7~19.9 67%
-75_0_0-15 16.1~18.9 46%
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Summary for cold caseSummary for cold case
• The result of the cmdv1.3 shows that a power of 40W for the cold orbit heaters should be enough for keeping the loop running in the extreme cold cases.
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Hot casesHot cases
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BYPR=+75-15-20-15BYPR=+75-15-20-15
Temperature and QBYPR=+75-15-20-15
255
260
265
270
275
280
285
290
295
300
305
310
5.4 6.7 7.9 9.2 10.4 11.7 12.9 14.2 15.4Time(hr)
Tem
pera
ture
(K
) a
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
Sub
cool
ing(
K) /Q
(W
) 0
T_set(TL1000)
T_HX_l i q_i n(TL2101)
T_HX_l i q_out(TL5000)
T_cds_out_ram(TL10032)
T_cds_out_wake(TL10033)
T_Uss(TTCBP.27100)
T_HX_2phase_i n(XL10023)
T_HX_2phase_out(XL10025)
T_subcool i ng(TL1000-TL1)
Q_uss(HR1517~1520)
Q_preheater(PHbot+PHtop)subcoolings
Tset=293KFR=2g/s
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Qual i ty and temperature of the inlet of the pump
276
278
280
282
284
286
288
290
292
294
0.6
1.3
2.1
2.8
3.6
4.3
5.1
5.8
6.6
7.3
8.1
8.8
9.6
10.3
11.1
11.8
12.6
13.3
14.1
14.8
15.6
Time/hr
Temp
erat
ure(
K)
A
0
0.02
0.04
0.06
0.08
0.1
0.12
Qual
ity
A
LOOP.TL1LOOP.XL1
BYPR=+75-15-20-15BYPR=+75-15-20-15
2 phase
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BYPR=+75-15-20-15BYPR=+75-15-20-15BYPR=+75-15-20-15
250
260
270
280
290
300
310
1.0 2.3 3.5 4.8 6.0 7.3 8.5Time/hour
Tem
pera
ture
(K) o
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
(sub
cool
ing/
K) or
(Q
/W)
T_set(TL1000)
T_HX_l i q_i n(TL2101)
T_HX_l i q_out(TL5000)
T_cds_out_ram(TL10032)
T_cds_out_wake(TL10033)
T_Uss(TTCBP.27100)
T_HX_2phase_i n(XL10023)
T_HX_2phase_out(XL10025)
T_subcool i ng(TL1000-TL1)
Q_uss(HR1517~1520)
Q_preheater(PHbot+PHtop)
Tset=293KFR=4g/s
Pre-heaters
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Summary of the hot casesSummary of the hot cases
• In the extreme hottest cases, TTCS loop is running with little sub cooling.
• Proposed solutions and impacts– Higher the set point– Higher the mass flow rate
• Higher pressure drop of the loop (up to 1600mbar)
• Higher the pre-heater power
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Future workFuture work
• Building and debugging the TTCS v1.0– modified the length and volume to the latest loop l
ayout– More reliable accumulator model.
• Involving of the tracker people in modeling is started, and to be strengthened.
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Thank youThank you