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过去我们所看到的国外设计或我们自己所设计的锅炉房,计算蒸汽需要量总是按照各用户所提出的最大蒸汽需要量计算,然后再加上约占总需要量10～15%的管道损失及锅炉房自用蒸汽量。但是选择锅炉时,锅炉的蒸发量是按正常蒸发量计算。日久相沿,此种计算方法已成为常规惯例了。可是,为什么全厂需热量要按最大蒸发量计算,而选择锅炉时却按锅炉的正常蒸发量,而不按锅炉的最大蒸发量计算呢?这是值得商讨的问题。我认为蒸汽需要量既按最大需要量计算,那末锅炉的蒸发量亦应按最大蒸发量计算。同时,我建议某些锅炉的计算最大蒸发量应采用下列数值:
In the past, we have seen foreign designs or boiler rooms designed by ourselves. The calculated steam demand is always calculated according to the maximum steam demand proposed by each user, and then the pipeline accounts for about 10 to 15% of the total demand. Loss and boiler room own steam. However, when the boiler is selected, the evaporation of the boiler is calculated as normal evaporation. As time goes by, this method of calculation has become a routine practice. However, why does the whole plant need to calculate the maximum evaporation amount of heat, but when the boiler is selected, it is calculated according to the normal evaporation of the boiler instead of the maximum evaporation amount of the boiler? This is a problem that is worth discussing. I think that the steam requirement is calculated on the basis of the maximum demand. Then the evaporation of the boiler should also be calculated on the basis of the maximum evaporation. At the same time, I suggest that the calculated maximum evaporation of some boilers should use the following values: