A coupling method of direct and inverse heat conduction problem for transient temperature calculation of the supercharged boiler drum

Journal of Thermal Science and Technology

Feng CHEN¹  Liangxiao SHI²  Enhui SUN³  Bin LI³ 

[1] Design Institute Co. Ltd;;Department of Thermal Engine, Inner-Mongolia Electric Power Survey &School of Energy Power and Mechanical Engineering, North China Electric Power University;

关键词: supercharged boiler;    drum;    coupling method;    inverse method;    temperature field;   

DOI  :  10.1299/jtst.2016jtst0030

来源: DOAJ

【 摘 要 】

The supercharged boiler drum is partly surrounded by the furnace flue gas and hot air, and it's difficult to precisely determine the temperature field from the direct method. This paper presents the coupling method of direct and inverse heat conduction problem to calculate the transient temperature field of the drum. To reduce the influence of boundary condition, the drum is divided into two regions and the temperature fields are respectively determined from the direct and inverse method according to heating condition of the outer wall. For the junction of the two regions, the temperature determined from the inverse method is assigned to the direct method. Then the coupling method is realized, the whole temperature field of drum is obtained. The proposed method is validated through experimental data and the result simulated by ANSYS, during a cold startup process. The comparison of results shows high accuracy of the coupling method and strong adaptability of complex boundary condition.

【 授权许可】

Unknown