Assessment of community energy supply systems using energy, exergy and exergoeconomic analysis

被引：47

作者：

Bagdanavicius, Audrius ^{[1
]}

Jenkins, Nick ^{[1
]}

Hammond, Geoffrey P. ^{[2
]}

机构：

[1] Cardiff Univ, Cardiff Sch Engn, Inst Energy, Cardiff CF24 3AA, S Glam, Wales

[2] Univ Bath, Inst Sustainable Energy & Environm, Dept Mech Engn, Bath BA2 7AY, Avon, England

来源：

ENERGY | 2012年 / 45卷 / 01期

基金：

英国自然环境研究理事会; 英国工程与自然科学研究理事会;

关键词：

Combined heat and power; Community energy supply system; District heating; Exergy; Exergoeconomics; SPECO; THERMOECONOMIC ANALYSIS; FUNCTIONAL-ANALYSIS; OPTIMIZATION; GASIFICATION;

D O I：

10.1016/j.energy.2012.01.058

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Energy, exergy and exergoeconomic analysis are often used for assessing large energy conversion systems. However exergy and exergoeconomic analysis are rarely used when small or medium scale energy generation systems, such as community CHP/CCHP plants or microcogeneration systems are evaluated. In this study energy, exergy and exergoeconomic analysis of four Community Energy Supply (CES) systems has been carried out Biomass Steam Turbine CHP (BST), Gas Turbine CHP (GT), Biomass Integrated Gasification Gas Turbine CHP (BIGGT) and Biomass Integrated Gasification Combined Cycle CHP (BIGCC) systems have been modelled. Modelling and energy/exergy analysis have been conducted using the computer programme Cycle-Tempo. Exergoeconomic evaluation of CESS has been performed using the Specific Exergy Costing (SPECO) approach. Exergy costs of the main products: heat and electricity, have been calculated. The analysis shows that gasification of biomass reduces overall system efficiency due to the exergy destruction in the thermo-chemical conversion process when air is used as an oxidizer. A GT using natural gas as a fuel and BIGCC are the most exergy efficient systems in this study with the lowest exergy cost of electricity and heat produced. The exergy cost of electricity generated in BST is the highest. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：247 / 255

页数：9

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