Title:
REINFORCED HEAT EXCHANGE PIPE WITH SECTIONS OF ROUND AND ELLIPSE OF ALTERNATE CHANGE
Document Type and Number:
WIPO Patent Application WO/2004/076954
Kind Code:
A1
Abstract:
A reinforced heat exchange pipe with sections of round and ellipse of alternate change, which is composed of several round pipe portions, elliptical pipe portions and round-elliptical transition pipe portions. The round pipes and elliptical pipes are arranged alternatively and have a crossed angle of 15°-90° between the long axis and the short axis of adjacent ellipse. This invention has smaller flow resistance and good heat transfer property. The invention has various applications and can prevent accumulation of dirt. For the tube-and-shell heat exchanger of the invention, the vibration of the bundle of pipe is much lower than the bundle of the general round pipe, and thereby the service life of the heat exchanger is increased.
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Inventors:
GUO ZENGYUAN (CN)
MENG JIAN (CN)
HU WEILIN (CN)
LI ZHIXIN (CN)
MENG JIAN (CN)
HU WEILIN (CN)
LI ZHIXIN (CN)
Application Number:
PCT/CN2003/000490
Publication Date:
September 10, 2004
Filing Date:
June 25, 2003
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
GUO ZENGYUAN (CN)
MENG JIAN (CN)
HU WEILIN (CN)
LI ZHIXIN (CN)
GUO ZENGYUAN (CN)
MENG JIAN (CN)
HU WEILIN (CN)
LI ZHIXIN (CN)
International Classes:
F28F1/00; (IPC1-7): F28F1/02
Foreign References:
| CN2089367U | 1991-11-27 | |||
| CN1361406A | 2002-07-31 | |||
| CN2335113Y | 1999-08-25 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LIMITED (Block A Investment Plaz, 27 Jinrongdajie 2 Beijing, CN)
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