增压可加速燃烧反应、强化传热，从而缩小锅炉体积，甚至可降低锅炉造价；减压则适与其反。我国地形多高原，尤其是西部地区。随着海拔高度的增加，大气压力明显降低。这种降低对煤粉燃烧及锅炉炉膛容积选择会造成一定影响。 Boosting can accelerate the combustion reaction, heat transfer enhancement, thereby reducing the boiler size, and even reduce boiler costs; decompression is appropriate and the opposite. How high is the topography of our country, especially in the west? As the altitude increases, the atmospheric pressure is significantly reduced. This reduction will have a certain impact on the pulverized coal combustion and boiler furnace volume selection.