low excess air

基本解释

According to the results, the air excess factor in boiler furnace causes low heat efficiency.
其结果表明：炉膛内空气过剩系数偏小导致锅炉热效率偏低；
The optimum operation of pulse combustor means successful ignition and stable combustion with high intensity, low excess air and low CO emission.
脉冲燃烧器的最佳运行工况应能顺利点火并在低过剩空气系数下高强度稳定燃烧。
The potential for efficiency improvement depends mainly on the fuel type fired, the exit flue-gas temperature, the process fluid temperature, the low-level heat required, and the excess air etc.
冷凝式锅炉的热效率提高潜力主要取决于燃料种类、锅炉本体的排烟温度、工艺流体的温度、所需的低品位热能的数量、过量空气系数等。