中国电机工程学报Issue(17)：2769-2777,9.DOI:10.13334/j.0258-8013.pcsee.2014.17.004
基于ASME PTC4-1998标准的锅炉热效率微分偏差修正方法分析及比较
Analysis and Comparison on the Differential Deviation Correction Method for Boiler Thermal Efficiency Based on ASME PTC4-1998 Codes
摘要
Abstract
Calculating the boiler thermal efficiency has become an indispensable task to evaluate and inspect the economy and energy-saving potential in coal-fired power plant at present. When a parameter changes, the existing correction method of boiler thermal efficiency is inconvenient to analyze its influence to the boiler thermal efficiency, and it is also inconvenient to analyze the reason and location which causes the reduction of the boiler thermal efficiency in operation. A new correction method which combined differential deviation method with first order Taylor formula was proposed to revise the various losses and boiler thermal efficiency, and comparison and analysis of correction calculation method were also conducted between the innovative correction method and ASME PTC4-1998. Taking a 1025 t/h boiler for example, various losses and boiler thermal efficiency were calculated under two different test conditions. The results show that the difference of the losses and boiler thermal efficiency calculated by differential modification method and ASME PTC4-1998 is tiny after modification, so the new method is convenient to guide operation for the boiler and also can be applied into the engineering practice.关键词
锅炉热效率/修正计算/微分偏差/ASME PTC4-1998标准/经济性诊断Key words
boiler thermal efficiency/correction calculation/differential deviation/ASME PTC4-1998 codes/economic diagnosis分类
能源科技引用本文复制引用
李勇,韩为,王艳红..基于ASME PTC4-1998标准的锅炉热效率微分偏差修正方法分析及比较[J].中国电机工程学报,2014,(17):2769-2777,9.基金项目
吉林省科技发展计划资助项目(20110409)。The Jilin Provincial Science and Technology Plan Program(20110409) （20110409）
