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    • 15. 发明专利
    • EVAPORATOR
    • JPS6241594A
    • 1987-02-23
    • JP17924885
    • 1985-08-16
    • TOKYO ELECTRIC POWER COMITSUBISHI HEAVY IND LTD
    • YOKOYAMA TAKASHIYAMAZAKI TAKETOSHINAGAYAMA KATSUYAOGATA JUNJITOYOFUKU MASAYOSHIOKI YOSHINORI
    • F28F13/16
    • PURPOSE:To disturb the temperature boundary layer in the vicinity of the surface of a heat transfer pipe, to reduce the overheat degree and to increase the heat transfer performance by applying a voltage between the heat transfer pipe and a plurality of metal wire electrodes disposed at an interval without contacting the outer periphery of the heat transfer tube, thereby forming an electric field. CONSTITUTION:A plurality of metal wire electrodes 12 are disposed at the outer periphery of a heat transfer tube 11 to extend in parallel at a suitable interval without making contact with the outer periphery of the heat transfer tube 11 and further along the longitudinal direction of the heat transfer tube 11. An electrode supporter 13 is wound around the electrodes 12 in the longitudinal direction thereof. When a heating medium flows within the heat transfer tube 11 and a non-conductive medium such as Flon or the like flows on the outside of the tube, the medium outside the tube boils up by the heat from the medium on the heating side and generates air bubbles. In such a state, when a voltage is applied between the heat transfer tube 11 and the electrode 12 to form an electric field, the boiling of the medium on the tube outside is suppressed, and generated air bubbles are rapidly reduced whereby the surface temperature of the heat transfer tube 11 is lowered and approached to the temperature of the medium on the tube outside and thus the heat transfer is promoted.