烧液体燃料负荷变化范围大的船用蒸汽锅炉,其鳍片式经济器按陆用锅炉机组整理的标准方法进行计算是不能完全反映出船用的特点的。在标准方法中没有引出热有效系数和烟气流速的关系式,而这对船用锅炉工作条件是必须考虑的。提出按折算的给热系数进行传热计算,这在烧重油的条件下确定这一折算的给热系数有困难,因为缺乏对选择一系列系数,其中包括沾污系数的详细介绍。所有这些使计算复杂化,而且降低其准确性。为了使计算方法精确,曾对装鳍片式经济器的船用锅 Burning liquid fuel load changes in a wide range of marine steam boilers, the fin economizer according to the standard method of land-based boiler unit to calculate is not fully reflect the characteristics of the ship. In the standard method, there is no correlation between the thermal efficiency factor and the flue gas velocity which must be taken into account for the operating conditions of a marine boiler. A heat transfer calculation based on the conversion of the heat transfer coefficient was proposed, which made it difficult to determine this converted heat transfer coefficient under the conditions of burning heavy oil because of the lack of a detailed description of the selection of a series of coefficients, including the coefficient of contamination. All of this complicates the calculation and reduces its accuracy. In order to make the calculation method accurate, once installed on the finned economizer marine pot