Acta Photonica Sinica, Volume. 49, Issue 8, 0822001(2020)
Design and Test of Thermo Electric Cooling System for Space Based Telescope Detector Assembly
Figures & Tables(24)
Fig. 2. Space environmental heat flux on radiator in extreme cases
Fig. 3. Schematic of thermal control system for the detector assembly
Fig. 9. Sensitivity analysis of the cooling heat loads and thermal resistance on the input power
Table 1. Space environmental heat flux absorbed by the radiator in the hottest and coldest case
View tableView in ArticleTable 1. Space environmental heat flux absorbed by the radiator in the hottest and coldest case
Case q solar minq solar maxq albedo minq albedomaxq irminq irmaxq total minq total maxq averageHottest case 0 0 0 37.4 0 236.0 0 273.4 101.7 Coldest case 0 0 0 16.8 50.5 73.7 50.5 90.5 67.1
Table 2. Heat pumped requirements analysis results of TEC
View tableView in ArticleTable 2. Heat pumped requirements analysis results of TEC
Radiation heat load/mW Conduction heat load/mW Active heat load/mW Total heat loads (no margin) Total heat loads (including margin) To image area ( ε h=0.45)80 70 140 853 1 000 To storage area ( ε h=0.05)9 To silicon area ( ε h=1.0)28 To SiC area ( ε h=0.825)525
Table 3. Thermo-electric parameters of the top and bottom TEC
View tableView in ArticleTable 3. Thermo-electric parameters of the top and bottom TEC
Part No. N α /(V•K-1)ρ /(Ω•cm)k /(W•cm-1•K-1)G /cmQ MAX/WI MAX/AV MAX /VΔ T MAX/℃CP14, 71, 10, L1, W4.5 71 1.934×10-4 9.2×10-4 1.61×10-2 0.077 18.7 3.9 8.6 68 CP14, 71, 06, L1, W4.5 71 1.934×10-4 9.2×10-4 1.61×10-2 0.118 28.7 6.0 8.6 67
Table 4. Performance analysis of the top and bottom TEC
View tableView in ArticleTable 4. Performance analysis of the top and bottom TEC
Parameters Top TEC Bottom TEC Part No. CP14-71-10L CP14-71-06L Heat loads of TEC 1 W 4.92 W Cold side temperature of TEC -75℃ -52.5℃ Hot side sink temperature of TEC -52.5℃ -30℃ Hot side thermal resistance of TEC 0.05 K/W 0.05 K/W Input voltage of TEC 2.39 V 3.06 V Input current of TEC 1.64 A 2.87 A Input power of TEC 3.92 W 8.77 W Hot side heat dissipation of TEC 4.92 W 13.69 W
Table 5. TEC environment parameters comparison between simulation and test
View tableView in ArticleTable 5. TEC environment parameters comparison between simulation and test
Results Heat load/W Detector temp/℃ Hot side boundary temperature of top TEC/℃ Hot side thermal resistance of top TEC/（K·W-1） Hot side boundary temp of bottom TEC/℃ Hot side thermal resistance of bottom TEC/（K·W-1） Temperature difference of top TEC Temperature difference of bottom TEC Analysis 1 -75 -52.5 0.05 -30 0.05 22.5 22.5 Test 0.7 -75 -65 0.065 -34 0.065 10 31
Table 6. TEC working parameters comparison between simulation and test
View tableView in ArticleTable 6. TEC working parameters comparison between simulation and test
Results Current of top TEC/A Voltage of top TEC/V Input power of top TEC/W Cop of top TEC Current of ottom TEC/A Voltage of bottom TEC/V Input power of bottom TEC/W Cop of bottom TEC Total input power/W Total heat dissipation/W Total COP Analysis 1.64 2.39 3.92 0.26 2.87 3.06 8.77 0.56 12.7 13.7 0.08 Test 0.7 0.9 0.63 1.11 3.2 3.3 10.9 0.12 11.6 12.3 0.06
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Wen-gang YANG, Xue-wu FAN, Chen-jie WANG, De-jin QIN, Bao-peng LI, Yun-fei DU, Liang-jie FENG, Hui ZHAO, Wei GAO. Design and Test of Thermo Electric Cooling System for Space Based Telescope Detector Assembly[J]. Acta Photonica Sinica, 2020, 49(8): 0822001
Paper Information
Category: Optical Design and Fabrication
Received: May. 9, 2020
Accepted: Jun. 16, 2020
Published Online: Nov. 27, 2020
The Author Email: FAN Xue-wu (fanxuewu@opt.ac.cn)
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