Heat Transfer in Furnace of 1 000 MW Coal-fired Unit Under Different Load Conditions

Chu SHI; Ran LI; Zhen YANG; Yuanyuan DUAN

doi:10.12096/j.2096-4528.pgt.19069

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Heat Transfer in Furnace of 1 000 MW Coal-fired Unit Under Different Load Conditions

Energy Clean and Efficient Utilization in Coal-fired Power Systems | 更新时间：2025-07-04

- Heat Transfer in Furnace of 1 000 MW Coal-fired Unit Under Different Load Conditions
- Power Generation Technology Vol. 40, Issue 3, Pages: 213-219(2019)
- 作者机构：
  
  清华大学能源与动力工程系, 北京市海淀区 100084
- 作者简介：
- 基金信息：
  
  National Key Research Development Program of China(2015CB251502)
- DOI：10.12096/j.2096-4528.pgt.19069
  CLC：
- Received：11 April 2019，
  
  Published：30 June 2019
- 稿件说明：
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Chu SHI, Ran LI, Zhen YANG, et al. Heat Transfer in Furnace of 1 000 MW Coal-fired Unit Under Different Load Conditions[J]. Power Generation Technology, 2019, 40(3): 213-219.
DOI：

Chu SHI, Ran LI, Zhen YANG, et al. Heat Transfer in Furnace of 1 000 MW Coal-fired Unit Under Different Load Conditions[J]. Power Generation Technology, 2019, 40(3): 213-219. DOI： 10.12096/j.2096-4528.pgt.19069.

摘要

以1 000 MW超超临界塔式锅炉为研究对象，建立了锅侧和炉侧的三维耦合传热计算模型。基于锅炉的设计参数，采用该模型计算了锅炉传热过程。对超超临界锅炉不同负荷条件进行数值模拟，分别选取锅炉的最大连续蒸发量（boiler maximum continuous rating，BMCR）工况、75% BMCR工况和50% BMCR工况来考察机组在调峰时锅炉传热规律。通过对炉侧炉膛壁面、炉膛内部、炉膛水平截面温度和热流分布以及水冷壁管壁和工质温度分布的分析，发现BMCR工况、75% BMCR工况的温度和热流在炉膛内的变化趋势一致，而50% BMCR工况的温度变化缺乏一般性规律，并且在螺旋水冷壁区域容易出现传热恶化现象。

Abstract

A 3D coupled mathematical model of 1 000 MW ultra-supercritical tower boiler was established. Based on the design parameters of the boiler

the model calculated the flow and heat transfer process of the boiler in operation. The model was used to simulate different load conditions of the supercritical boiler. The boiler maximum continuous rating (BMCR) condition

75% BMCR condition and 50% BMCR condition were selected to explore the heat transfer during peak shaving operation. By analyzing the temperature and heat flux distribution in the furnace and the temperature distribution in the tube and on the water cooled wall

it is found that the temperature and heat flux change of the BMCR

75% BMCR are in the similar trend while the temperature change of the 50% BMCR is irregular

and the heat transfer deterioration is prone to occur in the spiral water cooled wall region.

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