Study on maintaining a constant cold water outlet temperature of an adsorption refrigerator with two adsorbent-coated heat exchangers that alternatively adsorb and desorb the water
| Project/Area Number |
18K04457
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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 23020:Architectural environment and building equipment-related
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| Research Institution | Yamaguchi University |
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Principal Investigator |
Koganei Makoto 山口大学, 大学院創成科学研究科, 教授 (60555738)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 吸着式冷凍機 / 出力変動 / 出力一定化 / サイクルタイム / 吸着材 / 制御 / 冷凍能力 / 冷水温度 / 出力制御 |
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| Outline of Final Research Achievements |
Because an adsorption refrigerator employs two adsorbent-coated heat exchangers that alternatively adsorb and desorb the water, the large fluctuations of the output temperature of the cold water (between 4 and 5 °C) have remained an issue. In this study, the amount of cooling water supplied to a heat exchanger coated with an adsorbent was varied to maintain a constant cold-water temperature at the outlet. We confirmed that the mean deviation of the cold-water outlet temperature could be improved to within ±0.2℃ by reducing the output to 80-90% of the steady-state cooling capacity. This study also conducted a logical analysis that attempts to maintain a constant temperature of cold water in an adsorption/desorption model by varying the flow rate of the cooling water in the apparatus. The validity of the theoretical formula was confirmed by comparison with experimental data.
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| Academic Significance and Societal Importance of the Research Achievements |
吸着式冷凍機は、低温の温水（50～80℃）を利用して冷水を作ることができる冷凍機であるため、太陽熱をはじめ、生産工程で発生する熱、燃料電池の排熱等の様々な低温排熱利用が可能であることから、その有効利用に対する期待は大きいが、出力（冷水出口温度）の変動が普及阻害要因の一つになっている。
本研究により、吸着式冷凍機の出力（冷水出口温度）を一定化するための制御法が明らかになったので、吸着式冷凍機の普及促進に繋がることが期待される。
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Report
(4 results)
Research Products
(4 results)
