Thermodynamic analysis of integrated adiabatic chemical looping combustion and supercritical CO2 cycle

Rei Yu Chein, Wei Hsin Chen

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

In this study, an integrated adiabatic operated chemical looping combustion and supercritical CO2 Brayton cycle using biomass as feedstock was studied based on the thermodynamic analysis. Based on comparisons of species and adiabatic flame temperature in the product gas, it was found that high air and oxygen carrier flow rates are required in adiabatic chemical looping combustion for obtaining the results from the conventional combustion under adiabatic operation. Using the product gas from the fuel reactor and flue gas from the air reactor as heat sources for the simple recuperated supercritical CO2 Brayton cycle, it is found that the cycle efficiency increases with increased turbine inlet temperature and decreased condenser exit temperature under various compressor discharge pressures. The overall thermal efficiency of the integrated system, defined as the ratio of total net work of the power cycle to the higher heating value of biomass, depends on the CO2 mass flow rates in the power cycles and also increases with increased compressor discharged pressures. The maximum cycle and overall thermal efficiencies are found to be 51% and 21%, respectively.

原文English
文章編號113643
期刊Energy Conversion and Management
DOIs
出版狀態Accepted/In press - 2020

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 核能與工程
  • 燃料技術
  • 能源工程與電力技術

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