For steam boilers, what does "evaporation capacity" mean?

2021/11/29

When purchasing a steam boiler, it is best for users to have a certain understanding of the various parameters of the boiler. This will not only ensure that the appropriate boiler model is purchased, but also will not be deceived by bad boiler manufacturers and lose costs in vain. For steam boilers, "evaporation capacity" is a relatively important parameter, Zhengzhou Fangkuai Boiler Factory will come to show you.

The amount of steam produced by a steam boiler per hour is called the boiler’s evaporation, also known as "output" or "capacity". It is represented by the symbol "D", and the commonly used unit is t/h.
       The boiler evaporation capacity is divided into rated evaporation capacity, economic evaporation capacity and maximum continuous evaporation capacity.
       (1) Rated evaporating capacity The steam boiler uses the fuel specified in the design under the rated steam pressure, the rated steam temperature, and the rated feed water temperature, and the evaporative capacity per hour specified when the efficiency is guaranteed. The evaporation capacity indicated on the metal nameplate of the boiler product is the rated evaporation capacity of the boiler.
       (2) Economic evaporation capacity In continuous operation of the steam boiler, the evaporation capacity at the highest efficiency is called economic evaporation capacity. The economic evaporation is about 75% to 80% of the rated evaporation.
       (3) Maximum continuous evaporation The maximum evaporation that the steam boiler can achieve during long-term continuous operation under the conditions of rated steam parameters, rated feed water temperature and use of the designed fuel is called the maximum continuous evaporation. At this time, the efficiency of the boiler will be reduced, so try to avoid the boiler running under the maximum continuous evaporation capacity.

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