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Patent Searching and Data


Title:
【発明の名称】熱機能性混相流体
Document Type and Number:
Japanese Patent JP3363922
Kind Code:
B2
Abstract:
PURPOSE:To provide a fluid which has a high coefficient of thermal conductivity and has less restrictions for the utilization by a method wherein an expandable solid particle group of a multi-phase fluid is expanded by making it absorb the heat of a high temperature part, and the expandable solid particle group is moved to the vicinity of a high temperature wall to be heat transported, and at the same time, to be heat-shrunk. CONSTITUTION:A solid particle 6 of an expandable solid particle group for a functional multi-phase fluid has a structure for which a volatile or volume expandable substance 7 is covered by a stretchable substance 8. When the multi-phase fluid containing the expandable solid particles 6 flows in a tube upward, the diameter of the expand solid particle is small at a low temperature part at which the temperature of the multi-phase fluid is low, and the density is larger than the density of the ambient medium. In this case, the expandable solid particles 6 flow at the central part of the tube. In the meantime, at a high temperature part, the volatile or volume expandable substance 7 in the expandable solid particle 6 which flows in the high temperature part changes, and the expandable solid particle drastically expands, and becomes lighter than the ambient fluid, and acts like an air bubble. After going through the condition of an air-borne particle, the expandable solid particle 6 flows along the tube wall surface, and promotes the heat conductivity by disturbing the temperature boundary-layer, and at the same time, absorbs heat by itself.

Inventors:
Shoji Serizawa
Isao Kataoka
Kiyoyuki Horii
Application Number:
JP25108392A
Publication Date:
January 08, 2003
Filing Date:
September 21, 1992
Export Citation:
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Assignee:
Japan Science and Technology Agency
International Classes:
B01J8/08; F28D19/00; F28D20/00; F28F23/00; (IPC1-7): F28D19/00
Attorney, Agent or Firm:
Toshio Nishizawa