电站锅炉鳍片管省煤器鳍片尺寸优化模型

在电站锅炉省煤器典型工况下，以矩形直鳍片的高度和厚度优化为目的，从鳍片管换热机理和传热控制方程出发，得到了在鳍片金属质量一定条件下换热量最大时的鳍片尺寸选取的数学模型，并以某一电站锅炉省煤器为对象，说明了寻优的方法和步骤，计算分析了烟气流速及污染系数对优化尺寸的影响规律。

Optimization Model for Economizer Fin Size in a Utility Boiler

On the basis of heat exchange mechanism and heat transfer control equations of finned tubes a mathematical model is derived for the selection of fin sizes with the maximum heat transfer under the condition of a given fin-metal mass. The objective is to optimize the height and thickness of rectangular straight fins under the typical operating conditions of a utility boiler economizer. Moreover, with the economizer of a utility boiler serving as an object of study the optimization method and procedures are outlined along with a calculation and analysis of the influence of flue-gas flow speed and pollution factor on the optimized sizes.