| Project/Area Number |
02650288
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
電子機器工学
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| Research Institution | Oita University |
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Principal Investigator |
NAKANO Tadao Oita University, Faculty of Engineering, Professor, 工学部, 教授 (40038063)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Terukazu Oita University, Faculty of Engineering, Assistant, 工学部, 助手 (10187213)
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| Project Period (FY) |
1990 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1991: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1990: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Magnetic separation / Enrichment of oxygen content in air / Permeation membranes of oxygen |
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| Research Abstract |
1. Analysis of an oxygen particle in high gradient magnetic field : Magnetic attractive force on an oxygen particle is derived from the magnetic field distribution produced by the ferromagnetic single wire placed in homogineous magnetic field. The trajectory of an oxygen particle is obtained by the computer simulation based on the magnetic, gravitational, and inertia forces. An oxygen particle existing arotind the 3.8 times of the ferromagnetic wire radius is attracted to the wire when magnetic field of 1T is applied.
2. Observation of the air flow change by the application of the magnetic field : The temperature around the magnetic pole piece decreases abruptly when the magnetic field is turned on, and increases to initial temperature by turning off the magnetic field. These changes of the temperature occur at magnetic field above 0.6T and the variation of the temperature increases according to the increase of the magnetic field. These restilts can be explained as follows. The air flow
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occurs by the application of magnetic field and it decreases the temperature around the magnetic pole. piece. By turning off the magnetic field, the air flow stops and the temperature increasingly returns to the initial temperature. These phenomena suggests that the oxygen particles are attracted to the magnetic pole pieces by applying the magnetic field.
3. Analysis of the magnetic field produced by ferromagnetic wire matrices : Magnetic field produced by the ferromagnetic wire matrices inserted in a homogeneous magnetic field are calculated by the Finite Element Method. It is shown that ferromagnetic wire matrices with large saturation magnetization and small radius are necessary to enhance the magnetic attractive force an oxygen particles.
4. Experiments of the separator : As a trial separator, a canister is manufactured in which magnetic stainless steel wires are packed as a magnetic filter and thin Teflon films are pasted both sides of the canister. This canister is inserted in a homogenous magnetic field produced by an electromagnet and raw air is introdlied in it. Changes of the oxygen content are measured for the range of the magnetic field of 1.5T-2. OT. As a result, enriched oxygen content in an air with 2%*3% high is obtained. Less
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