Maximum useful energy rate and efficiency of a recuperative Brayton cogeneration plant

被引：0

作者：

郝小礼 ^{[1
]}

张国强 ^{[2
]}

机构：

[1] School of Energy and Safety Engineering,Hunan University of Science and Technology

[2] College of Civil Engineering,Hunan University

来源：

Journal of Central South University | 2013年 / 20卷 / 01期

关键词：

recuperative Brayton cycle; cogeneration; optimization; thermodynamics;

D O I：

暂无

中图分类号：

TM621 [火力发电厂、热电站];

学科分类号：

080802 ;

摘要：

A thermodynamic model was developed to analyze the performance of cogeneration plant based on irreversible recuperative Brayton cycle. A parameter, dimensionless total useful energy rate (DTUER), was used as the criterion for performance optimization of cogeneration plant. The effects of cycle parameters, internal irreversibilities, and recuperator efficiency on maximum DTUER and on the efficiency at maximum DTUER were numerically investigated. The relation between DTUER and cogeneration efficiency was also analyzed. The results show that there exists an optimal compressor pressure ratio which maximizes the DTUER. It is also found that there exists an optimal power-to-heat ratio which results in a dual-maximum DTUER.

引用

页码：156 / 163

页数：8

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