Numerical Modeling and Design of an Inspection Device with Thermoelectric Coolers for the Coke Oven

Abstract:

In order to inspect on wall condition inside the coke oven, an inspection device has been developed to protect a camera inside and sustains high temperature long enough so that it can be permanently-installed on the pusher ram beam. The temperature of the coking chamber during operation is about 1200 °C while the maximum tolerable temperature of a camera is less than 40 °C. The device has to function as a good thermal insulator with cooling element for the camera at the pusher head and for signal cables along the beam. In this paper, the necessary conditions of the inspective device were found out by building a three-dimensional numerical model of the device to simulate the temperature distribution inside the device with CFD commercial software.

• Periodical: Key Engineering Materials (Volumes 419-420)
• Pages: 29-32
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.419-420.29
• Online since: October 2009
• Authors: Tung-Hsin Yeh, Jiin Yuh Jang, Yu Bin Chen, Der Her Wang
• Keywords: Coke Oven, Numerical Simulation, Thermoelectric Cooler

References

[1] H. Matsushita, H. Inamasu, M. Satou and N. Takayama: Development of an Observation Device Installed Permanently on the Pusher for Coke Oven Inside Observation, 4th International Congress on the Science and Technology of Ironmaking(ICSTI'), C212. (2006).

[2] B.E. Launder and D. B. Spalding: Mathematical Models of Turbulence, Chap. 5, pp.90-100, Academic, London. (1972).

[3] CFD-ACE, CFD Research Corporation, Alabama, USA. (2003) 280.

[5] A-A Heat sink TEC Copper Camera Quartz glass IR filter Insulation A A Air Air 420 280 Unit： mm Fig. 1: The Schematic diagram of the insulated box Computational Domain y z x Air Inlet Box surface heat flux Air Outlet Quartz Glass IR Filter Camera Lens TEC Hot-end heat source=+q'+Pin Cold-end heat sink= -q', Fig. 2: The computational domain and boundary conditions V (m/s) Fig. 3: The stream line distribution inside the inspection device T (℃).

DOI: 10.1115/1.800741.ch6

[30] [35] [45] [50] [55] [60] [80] [65] [70] [75] [40] T (℃).

[30] [50] 200 350 500 650 800 950 1100 1200 Air CCD TEC Fig. 4: The temperature distribution of the insulation and CCD camera.

[3] 3. 5 4 4. 5 5 flow rate (Nm3/min).

[10] [20] [30] [40] [50] [60] [70] [80] T ( oC ) air inlet temperature to insulated box CCD Tmax Fig. 5: Themaximum tempreatue of CCD camera versus flow rate of cooling air.