Xi Yang, Pengshuai Sun, Tao Pang, Hua Xia, Bian Wu, Qiming Xu, Zhirong Zhang, Zhifeng Shu. High Precision Temperature Control Design of Gas Cell in Laser Absorption Spectroscopy System[J]. Acta Optica Sinica, 2020, 40(12): 1230001
- Acta Optica Sinica
- Vol. 40, Issue 12, 1230001 (2020)
Fig. 1. Internal structural diagram of temperature control box
Fig. 2. Temperature simulation results without fan
Fig. 3. Fan wind direction
Fig. 4. Simulation results for wind direction 1. (a) Temperature ; (b) flow-field
Fig. 5. Simulation results for wind direction 2. (a) Temperature; (b) flow-field
Fig. 6. Simulation results for wind direction 2 with box chamfer. (a) Temperature; (b) flow-field
Fig. 7. Seven temperature recording points
Fig. 8. Recording point temperatures under different heat transfer coefficients
Fig. 9. Real picture of temperature control box
Fig. 10. Schematic of TDLAS gas detection temperature control experimental system
Fig. 11. Temperature curves in temperature control box within one hour under different setting temperatures. (a) 36 ℃; (b) 38 ℃; (c) 40 ℃; (d) 42 ℃
Fig. 12. Second harmonic signal
Fig. 13. CO2 concentration at room temperature and change of room temperature. (a) CO2 concentration at room temperature; (b) room temperature
Fig. 14. CO2 concentrations under different temperatures. (a) 36 ℃; (b) 40 ℃
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