小型锅炉简易计算法

• 出 处: 铁路标准设计通讯
• 发表日期: 1973年01期
• 关键词: 锅炉热效率 辐射受热面 空气预热器 锅炉热平衡 省煤器 简易计算法 空气过剩系数 散热损失 排管 燃烧方式

本计算法仪适用于具有水冷壁、对流排管、省煤器的小型锅炉,不适用于备有蒸汽过热器、空气预热器及煤粉炉、沸腾炉等较复杂的情况。一、锅炉热平衡计算1.锅炉热效率锅炉热效率=100-各项热损失之和=100-〔排烟热损失+化学未烧损失+机械未烧损失+锅炉散热损失〕(％) 排烟热损失与燃料种类、排烟温度及排烟空气过剩系数有关,可查表1;化学未烧损失和机械未烧损失与燃烧方式有关,可查表2;锅炉散热损失见表3。

This calculation method is applicable to small boilers with water-cooled walls, convection pipes, and economizers. It is not suitable for more complex situations such as steam superheaters, air preheaters, pulverized coal boilers, and boiling boilers. I. Calculation of boiler heat balance 1. Boiler thermal efficiency Boiler thermal efficiency = 100 - Sum of heat losses = 100-[Fume heat loss + Chemical unburned loss + Mechanical unburned loss + Boiler heat loss] (%) Exhaust heat loss With regard to the type of fuel, smoke temperature and exhaust air excess coefficient, can check the table 1; chemical unburned loss and mechanical unburned loss is related to the combustion method, can be found in Table 2; boiler heat loss in Table 3.