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Wang Taiyong
Lu Shizhong
College of Mechanical Engineering,
Tianjin University,
Tianjin 300072, China
Xü Zhixue
Tianjin Petrochemical Crop.,
Tianjin 300271, China |
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STUDY ON LOCATION OF HOT SPOT AT TUBE WALL FOR FIRED CYLINDRICAL
FURNACE COMBUSTION*
Abstract:
Based on the analysis of heat radiation intensity from flame, a new mathematical model of the tube-wall temperature of heated tubes is developed by taking down-fired, upright-tube cylindrical furnace for example. The proposed mathematical model can be employed to indicate both the position and size of the hot spot at fire-facing wall of heated tube of combustion chamber, and is characteristic of simplicity
and efficiency. If coupled with thermoelectric couple or
infrared viewer, the presented location method of combustion hot spot can offer engineers very valuable proposal to keep furnace running more safely. The same is true for any other type of tubular furnaces.
Key words: Cylindrical furnace Combustion Heat radiation intensity Tube-wall temperature Hot spot |