ANALYSIS OF THERMAL ECONOMY OF INSTALLING EXTERNAL STEAM COOLER FOR ULTRA-SUPERCRITICAL 1000MW UNIT

NIU Zhongmin1; DING Yiyu2 1.Henan Province Electric Power Surney and Design Institute

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ANALYSIS OF THERMAL ECONOMY OF INSTALLING EXTERNAL STEAM COOLER FOR ULTRA-SUPERCRITICAL 1000MW UNIT

更新时间：2025-09-28

- ANALYSIS OF THERMAL ECONOMY OF INSTALLING EXTERNAL STEAM COOLER FOR ULTRA-SUPERCRITICAL 1000MW UNIT
- Thermal Power Generation Vol. 40, Issue 12, Pages: 67-69(2011)
- 作者机构：
  
  1. 河南省电力勘测设计院
  2. 中南电力设计院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK267
- Published：2011
- 稿件说明：
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NIU Zhongmin1, DING Yiyu2 1.Henan Province Electric Power Surney and Design Institute. ANALYSIS OF THERMAL ECONOMY OF INSTALLING EXTERNAL STEAM COOLER FOR ULTRA-SUPERCRITICAL 1000MW UNIT[J]. Thermal power generation, 2011, 40(12): 67-69.
DOI：

NIU Zhongmin1, DING Yiyu2 1.Henan Province Electric Power Surney and Design Institute. ANALYSIS OF THERMAL ECONOMY OF INSTALLING EXTERNAL STEAM COOLER FOR ULTRA-SUPERCRITICAL 1000MW UNIT[J]. Thermal power generation, 2011, 40(12): 67-69. DOI：

摘要

针对某超超临界1 000MW机组

提出了采用串联外置式蒸汽冷却器利用第3级抽汽过热度提高锅炉给水温度的方案。基于热力系统矩阵分析法

对该方案进行了热经济性分析。分析表明

设置外置式蒸汽冷却器可提高锅炉给水温度4.9℃

汽轮机绝对内效率相对设置前提高了0.24%

降低发电标准煤耗率约0.65g/(kW.h)

经济效益显著。

Abstract

Directing against one ultra-supercritical 1 000 MW unit

a scheme for enhancing the temperature of feed-water for boilers by using the superheat degree of the third-stage extraction steam from the external steam cooler connected in series has been put forward.Based on matrix analysis method of the thermal system

the thermal economy of said scheme has been analysed.Analysis shows that the installation of external steam cooler can enhance the temperature of feed-water for boilers by 49 ℃

the absolute internal efficiency of steam turbine relatively rose 0.24%

the standard coal consumption for power generation reduced about 0.65 g/(kW·h)

economic benefit being remarkable.

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