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Title:
HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2014/184964
Kind Code:
A1
Abstract:
Provided is a heat exchanger having improved heat transfer performance. A heat exchanger (100) according to the present invention is characterized in being provided with a heat transfer part (102) that contacts a gas (112) and performs heat exchange, and a fine structural body (102b) having a height of 10 µm or less and a surface area that is at least ten times the surface area of a smooth surface, the fine structural body (102b) being provided to a contact surface (102a) where the heat transfer part (102) contacts the gas (112). The Reynolds number of the gas (112) is preferably 30000 or greater, and the fine structural body (102b) is preferably formed from the same material as the base material constituting the contact surface (102a). The fine structural body (102b) also preferably has a heat conductivity that is equal to or greater than that of the base material constituting the contact surface (102a).

Inventors:
KAWAMURA TOSHINORI (JP)
NAKANO HIROSHI (JP)
KITO KAZUAKI (JP)
TAMURA AKINORI (JP)
Application Number:
PCT/JP2013/063859
Publication Date:
November 20, 2014
Filing Date:
May 17, 2013
Export Citation:
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Assignee:
HITACHI LTD (JP)
International Classes:
F28F9/24; F25B39/00; F28F1/32; F28F1/40; F28F13/02
Domestic Patent References:
WO2010143564A12010-12-16
Foreign References:
JPH1026491A1998-01-27
JP2011185543A2011-09-22
JP2009018280A2009-01-29
JPH11211376A1999-08-06
JP2003001746A2003-01-08
JP2003293166A2003-10-15
JP2013076548A2013-04-25
US3629029A1971-12-21
JP2006132841A2006-05-25
Other References:
"JSME Textbook Series ''Hydromechanics", May 2011, JAPAN SOCIETY OF MECHANICAL ENGINEERS, pages: 90
See also references of EP 2998687A4
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
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