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    FLOW RESISTANCE REDUCTION METHOD
    5.
    发明专利
    FLOW RESISTANCE REDUCTION METHOD 失效

    公开(公告)号：JP2000087921A

    公开(公告)日：2000-03-28

    申请号：JP26449098

    申请日：1998-09-18

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YABE AKIRA ,  OZAKI KOICHI ,  MATSUMOTO SOHEI ,  INADA TAKAAKI

    IPC: F15D1/12

    Abstract: PROBLEM TO BE SOLVED: To provide a flow resistance reduction method which improves a flow resistance reduction effect between a solid and a liquid mainly on the subject of a laminar flow region which has a relatively low flow velocity and of which flow resistance can hardly be reduced until now and provide a flow resistance reduction surface. SOLUTION: It is considered that the reason why flow resistance increases when a relatively rough uneven part 5 is formed on the interface of a solid 1 as shown in Fig. (C) is that part of lumps of a liquid 2 intrudes into recessed parts and adheres to a solid 1. On the other hand, it is considered that the reason why the flow resistance increases when the interface of the solid 1 is a mirror surface 3 as shown in Fig. (A) is that the surface energy of the solid increases because of the mirror surface and the lumps of the liquid 2 spread over and adhere to the solid 1 as if a thin film were stuck, so that wettability is increased. In order to resolve those problems, a fine uneven part 4 is formed on the interface of the solid 1 as shown in Fig. (B), so that the surface energy is reduced and a superior water-repellent surface to which the liquid 2 hardly adheres is formed, and thereby, the flow resistance is reduced.

    TRANSPORTATION OF COLD HEAT UTILIZING SILANE COUPLING AGENT, STORAGE OF COLD HEAT, METHOD AND APPARATUS FOR FORMING ICE SLURRY
    7.
    发明专利
    TRANSPORTATION OF COLD HEAT UTILIZING SILANE COUPLING AGENT, STORAGE OF COLD HEAT, METHOD AND APPARATUS FOR FORMING ICE SLURRY 失效

    公开(公告)号：JP2000087021A

    公开(公告)日：2000-03-28

    申请号：JP26424898

    申请日：1998-09-18

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YABE AKIRA ,  INADA TAKAAKI

    IPC: C09K5/06 ,  C08G77/04 ,  F25D3/00

    Abstract: PROBLEM TO BE SOLVED: To reduce the cost of cold heat transportation by means of ice slurry prohibited from recrystallization by transporting via pipes and pumps ice slurry formed by cooling a fluid, added with vinyltriethoxysilane as a silane coupling agent. SOLUTION: A liquid (e.g. water) added with vinyltriethoxysilane, γ- glycidoxypropyltriethoxysilane or γ-methacryloxypropyltriethoxysilane as a silane coupling agent is cooled to form ice slurry followed by further addition of an ice nucleus forming bacterium, if required, and the ice slurry is transported via pipes and pumps. Further, a liquid added with vinyltriethoxysilane, γ- glycidoxypropyltriethoxysilane or γ-methacryloxypropyltriethoxysilane as a silane coupling agent is cooled to form ice slurry, which is stored to reserve cold heat.

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