本文主要是对工业锅炉热平衡试验的各项误差来源及其计算方法作一较为详细的论述。然后阐明正反平衡等准确度热效率值的概念及其确定方法,并由此比较在一定热效率值范围内正反平衡的准确度。最后,简要介绍正反平衡热效率值之差在误差估价中的意义及其应用。 This article is mainly about the error sources of industrial boiler heat balance test and its calculation method for a more detailed discussion. Then the concept of positive and negative balance such as the accuracy of thermal efficiency and its determination method are clarified, and the accuracy of positive and negative balance within a certain range of thermal efficiency is compared. Finally, the significance of the difference between positive and negative equilibrium thermal efficiency values ​​in error assessment and its application are briefly introduced.