CALCULATION METHOD FOR THERMAL EFFICIENCY OF BOILERS BASED ON THE WEIGHTED LEAST SQUARE PRINCIPLE
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CALCULATION METHOD FOR THERMAL EFFICIENCY OF BOILERS BASED ON THE WEIGHTED LEAST SQUARE PRINCIPLE
Thermal Power GenerationVol. 40, Issue 4, Pages: 45-47(2011)
作者机构:
1. 沈阳工程学院能源与动力工程系
2. 东北大学材料与冶金学院
3. 浙江国华浙能发电有限公司
作者简介:
基金信息:
DOI:
CLC:TK222
Published:2011
稿件说明:
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MA Jinfeng1, WANG Wei2, XU Youning1, et al. CALCULATION METHOD FOR THERMAL EFFICIENCY OF BOILERS BASED ON THE WEIGHTED LEAST SQUARE PRINCIPLE[J]. Thermal power generation, 2011, 40(4): 45-47.
DOI:
MA Jinfeng1, WANG Wei2, XU Youning1, et al. CALCULATION METHOD FOR THERMAL EFFICIENCY OF BOILERS BASED ON THE WEIGHTED LEAST SQUARE PRINCIPLE[J]. Thermal power generation, 2011, 40(4): 45-47.DOI:
CALCULATION METHOD FOR THERMAL EFFICIENCY OF BOILERS BASED ON THE WEIGHTED LEAST SQUARE PRINCIPLE
摘要
基于加权最小二乘法和不确定度分析原理
根据锅炉热效率不确定度的分析结果确定权重
给出了加权最小二乘锅炉热效率分析计算模型。以某电厂200 MW机组为例的计算结果表明
测量结果的扩展不确定度接近时
可以采用算术平均法计算锅炉热效率;测量结果的扩展不确定度相差较大时
则采用加权最小二乘估计模型计算锅炉热效率更加准确。
Abstract
Based on the weighted least square principle and the uncertainty analysis principle
the weight has been determined from results of uncertainty analysis for thermal efficiency of the boiler
the model for analysing and calculating thermal efficiency of boiler based on the weighted least square being given.Taking 220 MW unit in one power plant as example
the results of calculation show that the thermal efficiency of boiler can be calculated by using arithematic averiging method in case the extended uncertainties are close to each other
and the thermal efficiency of boiler can be more accurately estimated in event the deviation among extended uncertainties being large.