Finned tube type heat exchanger

申请号 JP17541984 申请日 1984-08-23 公开(公告)号 JPS6152591A 公开(公告)日 1986-03-15
申请人 Toshiba Corp; 发明人 YOSHIOKA SHINPEI; KUBOTA TORU;
摘要 PURPOSE:To elongate the heating operation time as well as to enable to educe the defrosting time, by a method wherein one side surface within two confronting surfaces of each fin is made hydrophilic natured, and the other surface is made repellant. CONSTITUTION:Many of plate type fins are attached to a tube 11 in which medium is flowed nearly parallel with the space, and within two confronting surfaces of each fin 12, one surface is made hydrophilic natured and another surface is made repellent. Though frost is generated on the hydrophilic natured surface by the frosting while the heating operation, the frosting is delayed on the repellant surface, so to speak, the heating operation time can be elongated until the time when it becomes necessary to remove frost, the space of the fin 12 being closed by the frosting on both surfaces. In time of de-frosting, since water by thawing of frost flows down along the side of the hydrophilic natured surface, and on the repellant surfaces water is removed rapidly from the fins 12, the de-frosting time is reduced.
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