【正文】 .........................................................................................5 熱水鍋爐舉例 .........................................................................................6 煙風阻力計算的重要性 .........................................................................9 煙風阻力計算設計優(yōu)化和改進 ...........................................................10 煙風阻力計算步驟 .........................................................................................10 煙氣側阻力 計算 及引風機的 選型 ......................................................10 空氣側阻力 計算 及鼓風機的 選型 ....................................................... 11 第 2 章 煙氣側阻力計算 .....................................................................................12 爐膛出口負壓及八字煙道阻力 .....................................................................13 縱向、橫向相對截距 ...........................................................................13 斜向節(jié)距 ...............................................................................................13 單排管子阻力系數(shù) ξ10..........................................................................13 八字煙道阻力系數(shù) ...............................................................................14 煙氣動壓頭 ...........................................................................................15 前煙道箱阻力 .................................................................................................16 局部阻力系數(shù)及有效截面積 ...............................................................16 前煙箱煙氣速度 ...................................................................................17 前煙箱局部阻 力 ...................................................................................17 螺紋煙管阻力 .................................................................................................18 動壓頭 ...................................................................................................18 入口、出口阻力系數(shù) ...........................................................................18 螺紋煙管阻力 .......................................................................................18 后煙箱阻力 .....................................................................................................19 后煙箱出口阻力系數(shù)和后煙箱截面變化阻力系數(shù) ...........................19 動壓頭 ...................................................................................................19 后煙箱與 省煤器之間的阻力 ...............................................................20 后煙箱與除塵器與煙囪之間的煙道阻力 .....................................................20 除塵器阻力 .....................................................................................................20 煙囪阻力 .........................................................................................................20 煙氣動壓頭 ...........................................................................................20 沿程阻力系數(shù) .......................................................................................21 煙囪阻力 ...............................................................................................21 自生通風力 .....................................................................................................21 煙氣側全壓降 .................................................................................................22 第 3 章 引風機 ........................................................................................................ 23 煙氣容量 .........................................................................................................23 引風機應有煙氣量 .........................................................................................23 引風機應有壓頭 .............................................................................................24 引風機型號 .....................................................................................................24 引風機參數(shù) .....................................................................................................25 第 4 章 空氣側阻力計算 .....................................................................................26 吸風管路阻力 .................................................................................................26 空氣速度 ...............................................................................................26 吸風口阻力 ...........................................................................................26 沿程阻力 ...............................................................................................27 吸風管路阻力 .......................................................................................27 調風裝置阻力 .................................................................................................27 送風道阻力 .....................................................................................................28 沿程阻力 ...............................................................................................28 三通分流阻力 .......................................................................................29 送風道阻力 ...........................................................................................30 風倉室阻力 ...........................................................................................31 風道總阻力 ...........................................................................................31 第 5 章 鼓風機 ........................................................................................................33 鼓風機選擇 .....................................................................................................33 本章小結 .........................................................................................................33 結論 .............................................................................................................................34 致謝 .....................................................................................