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2008年 第2卷 第2期

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《能源前沿（英文）》 >> 2008年 第2卷 第2期 doi: 10.1007/s11708-008-0027-0

Heat flux distribution on circulating fluidized bed boiler water wall

1.Department of Thermal Engineering, Tsinghua University; 2.Harbin Boiler Works Co Ltd

发布日期： 2008-06-05
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The future of circulating fluidized bed (CFB) combustion technology is in raising the steam parameters to supercritical levels. Understanding the heat flux distribution on the water wall is one of the most important issues in the design and operation of supercritical pressure CFB boilers. In the present paper, the finite element analysis (FEA) method is adopted to predict the heat transfer coefficient as well as the heat flux of the membrane wall and the results are validated by direct measurement of the temperature around the tube. Studies on the horizontal heat flux distribution were conducted in three CFB boilers with different furnace size, tube dimension and water temperature. The results are useful in supercritical pressure CFB boiler design.

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