the main contents are as follows : based on analyzing several kinds of computing models of the boiler efficiency, performance test code for utility boiler is selected as original version and a new boiler efficiency online computing model is presented, which only needing input the coal industrial analytical components and the main operating monitored parameters of the boiler can online compute the boiler efficiencies 本文的主要工作如下:在分析了幾種鍋爐效率計算模型的基礎(chǔ)上,選擇我國電站鍋爐性能試驗規(guī)程作為藍本,提出了一種新的鍋爐效率在線計算模型。該模型只需要輸入鍋爐燃用煤的工業(yè)分析成分和鍋爐主要運行監(jiān)控參數(shù)就可以在線計算鍋爐效率。