Exergy analysis of a steam power plant at full and partial load conditions

IF 1.1 4区工程技术 Q4 ENERGY & FUELS

International Journal of Exergy Pub Date : 2023-01-01 DOI:10.1504/ijex.2023.128784

Uchenna G. Azubuike, Linus C. Egbuhuzor, Howard O. Njoku, Onyemaechi V. Ekechukwu

引用次数: 2

Abstract

Exergy performances were investigated for a 220 MW gas-fired steam turbine power plant operating at full and partial loads. The analyses relied on full and partial plant load design data. Compared to other components, boiler exergy efficiencies, 42.8%, 42.5% and 41.8%, were the least at 100%, 75% and 50% loads, respectively. The condenser exergy efficiency was least (40.29%) at 25% load. Exergy efficiencies of high pressure heater 6 were the highest across all the loads. For the entire plant, overall exergy efficiencies increased from 28.29% at 25% load to 33.18% at 100% load.

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某蒸汽电厂全负荷和部分负荷工况的火用分析

研究了220mw燃气汽轮机电厂在全负荷和部分负荷下的火用性能。分析依赖于全部和部分电厂负荷设计数据。与其他组成部分相比，锅炉的火用效率在100%、75%和50%负荷时最低，分别为42.8%、42.5%和41.8%。25%负荷时冷凝器的火用效率最低，为40.29%。高压加热器6的火用效率是所有负荷中最高的。对于整个电厂来说，总能源效率从25%负荷时的28.29%提高到100%负荷时的33.18%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Exergy 物理-能源与燃料

CiteScore

2.10

自引率

15.40%

发文量

107

审稿时长

6 months

期刊介绍： IJEX is dedicated to providing an interdisciplinary platform for information and ideas in the field of exergy and thermodynamic optimisation. It publishes a wide range of original, high-quality research papers, and ancillary features, spanning activities from fundamental research to industrial applications. IJEX covers aspects of exergy analysis of engineering and non-engineering systems and processes in a large variety of disciplines, ranging from mechanical engineering to physics and chemical engineering to industrial ecology. Topics covered include: -Thermodynamic systems -Energy-related applications -Process optimisation -Energy systems, policies, planning -Exergy/environment modelling -Exergetic life cycle assessment -Industrial ecology -Sectoral exergy utilisation -Waste exergy emissions -Second-law efficiency -Thermo- and exergo-economics -Exergy in sustainable development -Criticisms of and problems with use of exergy -Entropy generation minimisation -Constructal theory and design