Influence of measurement and estimation of heat loss on efficiency of CFB boiler

JIAO Tongshuai; YAN Weiping; CAO Ying; CHEN Xin; WANG Hua

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Influence of measurement and estimation of heat loss on efficiency of CFB boiler

Thermal Power Generation Vol. 45, Issue 12, Pages: 45-49(2016)

更新时间：2025-09-28

- Influence of measurement and estimation of heat loss on efficiency of CFB boiler
- 作者机构：
  
  1. 华北电力大学能源动力与机械工程学院
  2. 山东省特种设备检验研究院济宁分院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：2016
- 稿件说明：
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JIAO Tongshuai, YAN Weiping, CAO Ying, et al. Influence of measurement and estimation of heat loss on efficiency of CFB boiler[J]. Thermal Power Generation, 2016, 45(12): 45-49.
DOI：

JIAO Tongshuai, YAN Weiping, CAO Ying, et al. Influence of measurement and estimation of heat loss on efficiency of CFB boiler[J]. Thermal Power Generation, 2016, 45(12): 45-49. DOI：

摘要

为衡量现行《电站锅炉性能试验规程》(GB 10184—1988)中散热损失的估计方法对电厂锅炉效率的影响

对一台440t/h循环流化床(CFB)锅炉进行了散热损失现场测试及不确定度分析。测试时

将锅炉系统外表面分成134块区域

共设置1 333个测点

在每个测点处

表面温度、环境温度、环境风速各读取3个数。经计算可得

该锅炉系统的散热损失为0.731%

不确定度为0.08%

测试结果具有很高的准确度。但按现行国标和行业标准的估计方法确定的散热损失为0.432%

导致锅炉效率存在0.382%的单侧不确定度。

Abstract

In order to measure the deviation of utility boiler efficiency caused by the estimation method of heat loss in the current Performance Test Code for Utility Boiler(GB 10184—1988)

heat loss field test and uncertainty analysis of a 440t/h circulating fluidized bed(CFB)coal-fired utility boiler was carried out.The outside sulface of the boiler system was divided into 134 zones and 1 333 measurement points were arranged.At each measurement point

the surface temperature

ambient temperature

environmental wind speed were taken 3records respectively.After calculation

the heat loss of the boiler system and the uncertainty are respectively 0.731% and 0.08%.The test result is of high precision.However

according to the current national standard and industrial standard

the heat loss determined by these estimation methods is0.432%

leading to that the boiler efficiency has unilateral uncertainty of 0.382%.

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