2021 Fiscal Year Final Research Report
Measurement of vapor transfer resistance in pores of adsorbents during isothermal reaction, and theoretical prediction of resistance considering the pore characteristics of adsorbents
| Project/Area Number |
19K04239
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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 | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 蒸気吸着 / 等温 / 物質移動抵抗 |
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| Outline of Final Research Achievements |
Several types of heat transfer enhancing vapor adsorbents were prepared by applying an adsorbent to the heat transfer plate. The adsorption and desorption reaction rates of the adsorbent were measured isothermally by the quartz crystal microbalance method to obtain the equivalent diffusion resistance of vapor transfer in the adsorbent. The resistance during desorption was larger for adsorbents with smaller pore diameters and pore diameter distributions than for adsorbent with larger ones. In addition, there was no significant difference between the resistance of water vapor and alcohol vapor in the hydrophobic pores. Furthermore, in combination with theoretical analysis, pore diffusion resistance and surface diffusion resistance were separated. A method for clarifying the relationship between pore characteristics and surface diffusion resistance was presented.
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| Free Research Field |
熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
異なる細孔構造をもつ複数の種類の吸着材を対象に、蒸気の移動抵抗に及ぼす細孔特性、例えば、細孔直径、構造、表面性状の影響を等温条件のもとで実験的に明らかにする手法を提示した。そして、抵抗値の分離を行い、表面拡散抵抗の理論予測のための方法を提示した。
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