Assessment of community energy supply systems using energy, exergy and exergoeconomic analysis
Assessment of community energy supply systems using energy, exergy and exergoeconomic analysis
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DOI：
10.1016/j.energy.2012.01.058
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发表时间：
2012-09-01
期刊：
影响因子：
9
通讯作者：
Hammond, Geoffrey P.
中科院分区：
文献类型：
--
作者：
Bagdanavicius, Audrius;Jenkins, Nick;Hammond, Geoffrey P.
能源、火用和火用经济分析常用于评估大型能源转换系统。然而，在评估小型或中型能源发电系统（如社区热电联产/热电联产电厂或微型热电联产系统）时，很少使用能源和能源经济分析。本研究对四种社区能源供应（CES）系统进行了能量、火用和火用经济分析，并对生物质蒸汽轮机热电联产（BST）、燃气轮机热电联产（GT）、生物质综合气化燃气轮机热电联产（BIGGT）和生物质综合气化联合循环热电联产（BIGCC）系统进行了建模。利用计算机程序Cycle-Tempo进行建模和能量/火用分析。使用特定火用成本（SPECO）方法对CESS进行了火用经济评估。计算了主要产品：热和电的能源费用。分析表明，当空气作为氧化剂时，由于热化学转化过程中的火用破坏，生物质气化降低了系统的整体效率。使用天然气作为燃料的GT和BIGCC是本研究中最有效的系统，其产生的电力和热量的能源成本最低。BST产生的电力的能源成本是最高的。(C) 2012 Elsevier Ltd.版权所有。
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.