LI Yi, WU Qing-wen, CHEN Li-heng etc. Thermal control system of carbon dioxide detection instrument[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 1053-1061
LI Yi, WU Qing-wen, CHEN Li-heng etc. Thermal control system of carbon dioxide detection instrument[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 1053-1061 DOI: 10.3788/OPE.20152304.1053.
Thermal control system of carbon dioxide detection instrument
According to the structure characteristics and working modes of a dioxide detection instrument and considering its space environments
a thermal control system for the detection instrument was designed by combination of passive thermal control and active thermal control. Firstly
the structure and the internal heat source were introduced
the heat flux of the instrument was analyzed
and the difficulties of thermal control were obtained. Then
the thermal design of the instrument was carried out and the combination method of passive thermal control and active thermal control was used for the thermal isolation
thermal transmission and the thermal compensation. According to the space environment and thermal control measures
a thermal analysis model was constructed and the thermal transfer was solved with a TMG code. The simulation results show that the temperature of the main frame in the optical system is 13.3 ℃-21.7 ℃
which meets the design requirements. Finally
the thermal design was verified with a vacuum thermal balance test and the test results indicate that the temperature of the main frame in the optical system is 13.0 ℃-20.3 ℃. The tested value is in agreement with the calculated ones
which meets the thermal design targets and verifies that the thermal design is reasonable.
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