Angle Factor for Radiation to a Bank of Oval Tubes in Staggered Arrangement 椭圆形炉管管排的角系数计算
In this paper, the wall-temperature working state of each bank of finned tubes on a working condensing heat exchanger were calculated by finite element method, which was on a gas fired boiler end. 用有限差分法对一台已在燃气锅炉尾部运行的冷凝换热装置的各排翅片管束的壁面温度进行了计算。
The major causes of low heat efficiency for the high-pressure once-through boiler include high tail smoke temperature, fouling of finned tube of convection bank of tubes and high excess air coefficient. 锅炉尾部排烟温度高、对流管束翅片积灰和过量空气系数偏大是导致高压直流锅炉热效率低的主要原因。