Comparative analysis of a CCHP system based on municipal solid waste (MSW) gasification using micro gas turbine and internal combustion engine: Energy, exergy, economic, and environmental (4E) perspectives

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-04-22 DOI:10.1016/j.energy.2025.136004

Behzad Omidi Kashani , Rahim Khoshbakhti Saray , Reza Kheiri

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Abstract

This paper introduces a thermo-economic model for a combined cooling, heating, and power (CCHP) system using municipal solid waste (MSW) as feedstock, designed to operate without external energy sources. Two configurations are evaluated: one with a micro gas turbine-based (MGTB) generator and another with an internal combustion engine-based (ICEB) system. Syngas undergoes post-treatment and is used for power generation, steam and hot water production, and heating air for processes like the MSW dryer. The MGTB system achieves energy efficiencies of 41.03 % (summer) and 42.18 % (cold season), while the ICEB system achieves 61.37 % and 67.77 %, respectively. Exergy efficiencies for the MGTB system are 9.52 % and 10.87 %, and for the ICEB system, 31.12 % and 29.93 %, respectively. The annual cost per MWh for the MGTB system is $10.38, compared to $8.69 for the ICEB system. CO₂ emissions for the MGTB system are 9548 and 8882 tons per year (hot and winter), while the ICEB system emits 7488 and 7055 tons per year, respectively. The ICEB system's higher exergy efficiency leads to lower exergy loss, a 270 % increase in the environmental improvement index, and a 26 % annual increase in the sustainability index compared to the MGTB system.

查看原文本刊更多论文

基于微型燃气轮机和内燃机的城市固体废物气化CCHP系统的比较分析：能源、能源、经济和环境（4E）观点

本文介绍了一种以城市固体废物（MSW）为原料的冷热电联产（CCHP）系统的热经济模型，该系统设计为无外部能源运行。评估了两种配置：一种是基于微型燃气轮机（MGTB）的发电机，另一种是基于内燃机（ICEB）的系统。合成气经过后处理，用于发电、蒸汽和热水生产，以及为城市生活垃圾干燥机等过程加热空气。MGTB系统在夏季和寒冷季节的能效分别为41.03%和42.18%，而ICEB系统的能效分别为61.37%和67.77%。MGTB系统的火用效率分别为9.52%和10.87%，ICEB系统的火用效率分别为31.12%和29.93%。MGTB系统每兆瓦时的年成本为10.38美元，而ICEB系统为8.69美元。MGTB系统每年（热和冬季）的二氧化碳排放量分别为9548吨和8882吨，而ICEB系统每年的排放量分别为7488吨和7055吨。与MGTB系统相比，ICEB系统较高的火用效率导致了更低的火用损失，环境改善指数增加了270%，可持续性指数每年增加26%。

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.