Development of a cognitive and predictive risk mitigation system of hydrogen dispersion based on large-eddy sensing
| Project/Area Number |
22710157
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Social systems engineering/Safety system
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| Research Institution | Ehime University (2011-2013)
Tohoku University (2010) |
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Principal Investigator |
MATSUURA Kazuo 愛媛大学, 理工学研究科, 准教授 (20423577)
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | Hydrogen / Safety / CFD / Sensing / Control / 水素エネルギー / リスク緩和 / センシング / 制御 / 換気 |
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| Research Abstract |
I proposed a real-time sensing-based risk-mitigation control of hydrogen dispersion in a partially open space with low-height openings using forced ventilation. Related to the space, a plot of acceptable exhaust low rates for various leak low rates and leak positions (an acceptability diagram), a method for estimating the instantaneous hydrogen amount accumulating near the roof, and a hunting-preventive (HP) control scheme for the exhaust low rate based on the least-squares method were presented. A sensing-based risk-mitigation control strategy to control the exhaust volume low rate was then proposed. I proposed two acceleration methods that improved the ventilation performance of the original HP scheme after hydrogen leakage ceased. I developed a system that controls fan speed according to hydrogen concentration at a hydrogen sensor, and showed experimentally the possibility of self-excited oscillation of the system.
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Report
(4 results)
Research Products
(23 results)
