For Steam Boilers, "evaporation capacity" is a more important parameter
The amount of steam produced by a steam boiler per hour is called the evaporation capacity of the boiler, also known as "output" or "capacity". It is represented by the symbol "d", and the common unit is t/h.
 
The evaporation capacity refers to the amount of steam produced per hour when the steam boiler operates continuously for a long time. The common unit is t/h. Ash, using the original design fuel, under the rated feed water temperature and designed working pressure and guaranteed efficiency, the evaporation capacity generated by the boiler per hour is continuously operated for a long time. In actual work, it is impossible for the rated conditions to remain unchanged. Therefore, the boiler In actual operation, the maximum evaporation per hour is the maximum evaporation, and the efficiency of the boiler will be reduced at this time.