【摘要】 作者借鉴常规锅炉的设计经验,建立了一套适用于计算机计算的船用余热锅炉设计模型和方法。模型考虑了温度的变化对平均传热系数和压力降的影响,采用了不用迭代求解物理场不均匀对放热系数影响的方法,克服了常规设计中的查图问题,使其适用于计算机设计。进而利用最优化方法,提出了余热锅炉结构优化设计模型。使用相应的计算机程序,对实际余热锅炉的检验计算结果表明,本文所提出的模型和方法是正确有效的。更多还原

【Abstract】 Based on the experience of conventional boiler design,a mathemati-cal model and procedures conveuient to computer calculation for marinewaste heat boiler structural design are established,in the model,the eff-ects of temperature variation on mean overall heat transfer coefficient andpressure drops are taken into consideration,and a method of itera-tion-free calculation of heat transfer coefficient instead of the (?)terationone in solving the influence of uneven field of physical properties on heattransfer coefficient is used.Next,using the method of optimization,an optional design model formarine waste heat boiler structural design is developed.The calculated results show that the design and the optimization mo-dels are good for practical application.The corresponding computer pro-grams are flexible,which can be used to calculate three types of tubeform and two kinds of tube arrangement.During optimization analysis,the influence of some main factors inboiler design such as selection of values of fouling factor and thermal ef-fectiveness are discussed.更多还原