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Title:
HEAT EXCHANGER TUBE, CRACKING FURNACE AND TUBULAR HEATING FURNACE USING IT
Document Type and Number:
Japanese Patent JP2007255888
Kind Code:
A
Abstract:

To provide a heat exchanger tube capable of further increasing heat transfer efficiency, and to provide a method for manufacturing it.

This heat exchanger tube has at least one twisted baffle therein, each of the twisted baffles extends in the heat exchanger tube along the axis thereof, the twisted baffle extends to at least a part of the entire length of the heat exchanger tube, and the twisted baffles are integrated with the inner surface of the heat exchanger tube. The twisted angle of the twisted baffles is between 100° and 360°. The ratio between the axial length of the heat exchanger tube with the twisted angle 180° of the twisted baffles and the internal diameter of the heat exchanger tube is 2 to 3.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
ZHU YAOXIAO
ZHENG ZHI
ZENG QINGQUAN
NING XIUZHEN
Application Number:
JP2007130225A
Publication Date:
October 04, 2007
Filing Date:
May 16, 2007
Export Citation:
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Assignee:
CHINA PETROCHEM CORP
INST OF METAL RES SCIENCE ACAD
CHINA PETROCHEMICAL CORP BEIJI
International Classes:
F28F13/02; C10G9/20; F28F1/00; F28F1/40
Domestic Patent References:
JPH0635047B21994-05-11
JPH09292191A1997-11-11
JPH09113168A1997-05-02
JPH03241290A1991-10-28
JPH0749194A1995-02-21
JPH0295424A1990-04-06
JPS59102430A1984-06-13
JPH09209751A1997-08-12
Attorney, Agent or Firm:
Tadahiko Ito



 
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