Energy and Exergy Performances of Corn Straw and SiC during the Microwave Heating Process

  • ZHAO Wenke ,
  • CAO Weitao ,
  • CUI Longfei ,
  • ZHANG Yaning
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  • School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

网络出版日期: 2025-09-01

基金资助

The authors sincerely appreciate the financial supports from the National Natural Science Foundation of China (52076049), Heilongjiang Province “Double First-class” Discipline Collaborative Innovation Achievement Project (LJGXCG2023-080), Heilongjiang Provincial Key R&D Program (2023ZX02C05), and Heilongjiang Provincial Key R&D Program “Unveiling the Leader” Project (2023ZXJ02C04).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Energy and Exergy Performances of Corn Straw and SiC during the Microwave Heating Process

  • ZHAO Wenke ,
  • CAO Weitao ,
  • CUI Longfei ,
  • ZHANG Yaning
Expand
  • School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Online published: 2025-09-01

Supported by

The authors sincerely appreciate the financial supports from the National Natural Science Foundation of China (52076049), Heilongjiang Province “Double First-class” Discipline Collaborative Innovation Achievement Project (LJGXCG2023-080), Heilongjiang Provincial Key R&D Program (2023ZX02C05), and Heilongjiang Provincial Key R&D Program “Unveiling the Leader” Project (2023ZXJ02C04).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

摘要

玉米秸秆与碳化硅(SiC)在微波加热过程中的能量和㶲特性研究,有助于促进农业废弃物利用,减轻环境污染,提升废弃物价值,提高农民收入。本研究对不同质量比(SiC与玉米秸秆),微波功率和反应器体积下玉米秸秆微波加热过程的能量和㶲特性(吸热量,能量效率,热量㶲和㶲效率)进行了比较和分析。实验结果表明,将SiC与玉米秸秆的质量比从0增加到1显著改善了能量和㶲特性:吸热量从5466 J增加到6195 J,能量效率从9.1% 提高到20.7%,热量㶲从1102 J增加到1312 J,㶲效率从1.8%提高到4.4%。同样地,将微波功率从400 W提高到 600 W,吸热量从5752 J增加到6195 J,能量效率从11.1% 提升至20.7%,热量㶲从1177 J增加到1312 J,㶲效率从2.3% 提升至4.4%。相反,将反应器容积从100 mL增大到300 mL则导致各项性能下降:吸热量从5758 J降至5700 J,能量效率从11.6% 降至 9.0%,热量㶲从1122 J降至1118 J,㶲效率从2.3%降至1.8%。质量比对能量和㶲特性的影响显著,而反应器容积的影响较小。

本文引用格式

ZHAO Wenke , CAO Weitao , CUI Longfei , ZHANG Yaning . Energy and Exergy Performances of Corn Straw and SiC during the Microwave Heating Process[J]. 热科学学报, 2025 , 34(5) : 1857 -1866 . DOI: 10.1007/s11630-025-2173-7

Abstract

The energy and exergy performances of the corn straw and Silicon Carbide (SiC) in the microwave heating process are crucial to sufficiently utilize crop residues for mitigating environmental pollution, promoting waste value, and improving farmer incomes. In this study, the comprehensive energy and exergy performances (the absorbed energy, energy efficiency, absorbed exergy, and exergy efficiency) of the mass ratio (SiC to corn straw), microwave power, and reaction chamber volume were compared and analyzed. The effect of the mass ratio of SiC to corn straw on energy and exergy performances based on the experimental data was newly studied. Also, the parametric analysis of the microwave power and reaction chamber for the microwave heating process of corn straw assisted by SiC was conducted. The findings indicate that increasing the mass ratio of SiC to corn straw from 0 to 1 significantly improves performance metrics: final absorbed energy increased from 5466 J to 6195 J, energy efficiency from 9.1% to 20.7%, absorbed exergy from 1102 J to 1312 J, and exergy efficiency from 1.8% to 4.4%. Similarly, increasing microwave power from 400 W to 600 W enhanced final absorbed energy from 5752 J to 6195 J, energy efficiency from 11.1% to 20.7%, absorbed exergy from 1177 J to 1312 J, and exergy efficiency from 2.3% to 4.4%. Conversely, enlarging the reaction chamber from 100 mL to 300 mL resulted in decreases: final absorbed energy dropped from 5758 J to 5700 J, energy efficiency from 11.6% to 9.0%, absorbed exergy from 1122 J to 1118 J, and exergy efficiency from 2.3% to 1.8%. These results underscore the substantial influence of the mass ratio on energy and exergy performances, while indicating that the reaction chamber volume has a minimal impact on the performances.

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