2022 Fiscal Year Final Research Report
Optimal selection of hydrogen carrier candidate substances by the modeling of various thermodynamic properties and new design of processes
| Project/Area Number |
20K04332
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 19020:Thermal engineering-related
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| Research Institution | Toyama Prefectural University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 状態方程式 / 有機系水素キャリア / PρT性質 / 高精度測定 / プロセスシミュレーション |
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| Outline of Final Research Achievements |
We have measured the thermodynamic properties of candidate organic hydrogen carriers over a wide temperature and pressure ranges, and I also have developed a highly accurate Helmholtz free energy type equations of state. These equations of state are almost completed, and they have been accepted as the next standard model for REFPROP, a thermophysical property calculation software developed at NIST in the United States.
On the other hand, using a process simulator, we have completed flowsheets of hydrogenation processes for methylcyclohexane, cis-decalin, and bicyclohexyl, and have conducted sensitivity analyses for further process optimization and heat and work demands.
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| Free Research Field |
熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
蒸気発電などの大型のエネルギー変換プロセスの設計には，Helmholtz関数型状態方程式の開発が不可欠である．高精度な実測値を拡充し，多くの有機系水素キャリアに関する，世界最高精度のHelmholtz関数型状態方程式を，国際協力体制で開発した．さらにREFPROPへの実装が内定し，水素や水などとの混合系に関する熱物性の推算が容易になった点が，学術的意義である．
研究成果の社会的意義は，上記の熱物性を活用し，様々な有機系水素キャリアの反応プロセスのフローシート計算および感度解析が可能となったことで，有機系水素キャリアの選択肢の拡充および水素輸送技術の開発が，大いに促進され得る点である．
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