Title:
HEAT EXCHANGER
Document Type and Number:
Japanese Patent JPH01208509
Kind Code:
A
Abstract:
PURPOSE:To prevent accumulation of carbon so as to constantly obtain high efficiency of thermal conductivity in a heat exchanger which exchanges heat between exhaust gas from a Diesel engine and heated fluid by providing a ceramic porous body layer which carries catalytic substance around an outer peripheral surface of a heat exchanger tube. CONSTITUTION:In the case of a heat exchanger which performs hot water supply etc., by utilizing exhaust gas from a Diesel engine, a ceramic porous body layer 2 is provided around the outer peripheral surface of a heat exchanger tube 1 in which such heated fluid as water flows in the heat exchanger. The porous body layer 2 carries catalytic substance to oxidize carbon in exhaust gas. Thereby, big surface area is secured by the ceramic porous body so that effective heat exchanging is made to be possible, while carbon which is captured and adheres in the porous body layer 2 is oxidized and changed into CO2 so that accumulation of carbon to the outer surface of the heat exchanger tube 1 and in the porous body layer 2 is prevented.
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Inventors:
SASAKI TAKASHI
NAKANO FUMIO
SAITO MASAHIRO
NAKANO FUMIO
SAITO MASAHIRO
Application Number:
JP3164588A
Publication Date:
August 22, 1989
Filing Date:
February 12, 1988
Export Citation:
Assignee:
YANMAR DIESEL ENGINE CO
International Classes:
F01N3/24; F01N5/02; F28F1/12; F28F13/00; F28F13/18; F02B3/06; (IPC1-7): F01N3/24; F01N5/02; F28F1/12
Attorney, Agent or Firm:
Tadataka Omori
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