盘管式热载体炉的优化设计探讨

Study of the Optimization of the Design of Coiled Heating Medium Furnace

为提高盘管式热载体炉的经济效益，以热载体炉每年的一次投资费用及运行费用之和为目标函数，用数学规划方法对盘管式热载体炉的管内流速及传热面积等量进行了优化计算。结果表明，热载体最佳流速及相应的传热面积主要随炉膛出口烟温（或炉膛辐射热强度）、炉管管径及热载体入炉温度的变化而改变。若采用炉膛最经济出口烟温以及相应的管内最佳流速与传热面积进行设计，将使热载体炉的经济效益明显提高。文中的优化设计方法也可用于立管型盘管式加热炉的优化设计。

In order to promote economical benefit of the coiled heating medium furnace, the velocity in the pipe and heat transfer area were optimumly calculated using the mathematical programme method, using the sum of investment and running cost of the coiled heating medium furnace per year as objective function. The results showed that the optimun velocities of the heating medium and correspondent area of heat transfer are changed with the smoke temperature at exit of the furnace tank (or furnace radiant heating intensity), the diameter of a pipe and temperature of heating medium into the furnace. Application of the most economic smoke temperature at exit of a furnace tank, correspondent the optimum velocity and area of heat transfer will enable the economic benefit of the heating medium furnace to increase considerably. The computation methods in optimization can be applied to optimum design of vetical coiled heating furnace.