HULL FRICTION RESISTANCE REDUCING DEVICE
PROBLEM TO BE SOLVED: To reduce the friction resistance of a hull, and to save energy by blowing out micro bubbles of a gas/water mixed phase so as not to separate from a hull surface. SOLUTION: The hull friction resistance reducing device has a tank storing gas/water mixed phase fluid, a pump 24 su...
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| creator | ONARI HIROBUMI KANDA MASAMITSU KAMIIRISA HIKARI TAKANO TSUKASA |
| description | PROBLEM TO BE SOLVED: To reduce the friction resistance of a hull, and to save energy by blowing out micro bubbles of a gas/water mixed phase so as not to separate from a hull surface. SOLUTION: The hull friction resistance reducing device has a tank storing gas/water mixed phase fluid, a pump 24 supplying the gas/water mixed phase fluid 14 from the tank 22 to a nozzle, and the nozzle blowing out the gas/water mixed phase fluid supplied from the pump to a stern along a hull wall. A controlling means controlling the flow speed of the gas/water mixed phase fluid blowing out from the nozzle so as to be smaller than a wall surface speed incline of a border layer corresponding to present ship speed by inputting a ship speed signal is provided. To the tank, a gas/water mixed phase fluid producing means producing micro bubbles by inducing gas to a turning swirling current center by fluid and shearing a center gas flowing pipe with a swirling current is connected. COPYRIGHT: (C)2008,JPO&INPIT |
| format | Patent |
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| subjects | CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION EQUIPMENT FOR SHIPPING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING |
| title | HULL FRICTION RESISTANCE REDUCING DEVICE |
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