前言目前燃油锅炉的需要量正在急剧增加。在锅炉设计和运行时,对高热负荷受热面的传热必须要有确当的估算。特别是蒸发受热面通常是布置在燃烧室内的,很可能引起与热负荷、冷水速度、蒸汽干度等有关联的膜态沸腾,因此要重视管壁温度的掌握和受热面布置的合理性。根据实践所得的相对于不同冷水速度下热负荷与管壁温度的关系归纳成线算图。燃烧室中热负荷的分布在燃烧室中,根据燃料、空气的显热所得到的平均烟气温度是假想的计算值,也没有实际的燃烧室内烟气温度分布规律。实际的燃烧器轴线方向上 Foreword At present, the demand for oil-fired boilers is rapidly increasing. In the design and operation of the boiler, there must be a reasonable estimate of the heat transfer to the heating surface with a high thermal load. In particular, the evaporative heating surface is usually arranged in the combustion chamber, which is likely to cause membrane boiling associated with heat load, cold water velocity, and steam dryness. Therefore, attention should be paid to the control of the wall temperature and the rationality of the heating surface arrangement. According to the practice, the relationship between the heat load and the tube wall temperature at different speeds of cold water is summed up as a line diagram. The distribution of heat load in the combustion chamber is in the combustion chamber. The average flue gas temperature obtained from the sensible heat of the fuel and air is the imaginary calculated value, and there is no actual combustion chamber flue gas temperature distribution law. Actual burner axis direction