Part of the wall in the cold water is heated in boiling water into steam after vaporization, the saturated steam from the steam drum into the upper part of the outflow in the superheater.

• 部分水在冷壁中被加热沸腾后汽化成水蒸汽，这些饱和蒸汽由汽包上部流出进入过热器中。