Efficiency analysis of 50 kWe SOFC systems fueled with biogas from waste water

IF 5.4 Q2 CHEMISTRY, PHYSICAL
Hendrik Langnickel , Markus Rautanen , Marta Gandiglio , Massimo Santarelli , Tuomas Hakala , Marco Acri , Jari Kiviaho
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引用次数: 17

Abstract

Solid oxide fuel cell systems (SOFCs) are able to convert biogas from e.g. waste water plants highly efficiently into electricity and heat. An efficiency study of industrial sized solid oxide fuel cell systems installed at a waste water treatment plant is presented. The site consist of a biogas cleaning unit, two Convion C50 SOFC systems and a heat recovery section. The electric and total efficiencies of the systems are analyzed as a function of the electric net power output. The two systems achieved consistently high electric (50–55%) and total (80–90%) efficiencies in an electric net power output range between 25 kW and 55 kW. The study also shows that the high system efficiencies are independent of the CH4 content in the biogas. The results indicate that fuel cell systems are able to perform power modulation according to the power demand, while achieving constant high efficiencies. This is a clear benefit in comparison to micro turbines and combustion engines which are normally used for converting biogas into electricity and heat.

以废水沼气为燃料的50kwe SOFC系统效率分析
固体氧化物燃料电池系统(sofc)能够高效地将废水厂的沼气转化为电能和热能。介绍了工业规模固体氧化物燃料电池系统在污水处理厂的效率研究。该基地由一个沼气净化装置、两个Convion C50 SOFC系统和一个热回收部分组成。系统的电力效率和总效率作为净电力输出的函数进行了分析。这两个系统在25 kW和55 kW之间的净电力输出范围内实现了持续的高电力效率(50-55%)和总效率(80-90%)。研究还表明,系统的高效率与沼气中的CH4含量无关。结果表明,燃料电池系统能够根据功率需求进行功率调制,同时实现恒定的高效率。与通常用于将沼气转化为电能和热能的微型涡轮机和内燃机相比,这是一个明显的优势。
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
CiteScore
9.10
自引率
0.00%
发文量
18
审稿时长
64 days
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