Title:
CORRUGATED HEAT EXCHANGER TUBE FOR HOT WATER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2008/029639
Kind Code:
A1
Abstract:
A corrugated heat exchanger tube for hot water supply performing heat exchange between
the inside and the outside. A plurality of protrusions having height (H1) in the
range of 0.5-1.5 mm are provided at least partially on the inner surface at a portion
in a section where the Reynolds number (Re) of fluid flowing the inside of the corrugated
heat exchanger tube is less than 7000, and the height (H1) of the protrusions is
set equal to 0.05-0.15 times the inside diameter (D) or 1-3 times the depth (Hm)
of the corrugated groove. Consequently, heat transfer performance is enhanced
in the region of low Reynolds number with a simple structure, and pressure loss
in the tube is reduced.
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Inventors:
LI, Zhixing (Qinghuayuan Haidianq, Beijing-shi 4, 100084, CN)
李 志信 (1 北京市海淀区清華▲園▼ 清華大学内 Beijing, 100084, CN)
MENG, Jian (Qinghuayuan Haidianq, Beijing-shi 4, 100084, CN)
孟 継安 (1 北京市海淀区清華▲園▼ 清華大学内 Beijing, 100084, CN)
李 志信 (1 北京市海淀区清華▲園▼ 清華大学内 Beijing, 100084, CN)
MENG, Jian (Qinghuayuan Haidianq, Beijing-shi 4, 100084, CN)
孟 継安 (1 北京市海淀区清華▲園▼ 清華大学内 Beijing, 100084, CN)
Application Number:
JP2007/066436
Publication Date:
March 13, 2008
Filing Date:
August 24, 2007
Export Citation:
Assignee:
TSINGHUA UNIVERSITY (Qinghuayuan, Haidianqu Beijing-shi, 4, 100084, CN)
清華大学 (1 北京市海淀区清華▲園▼ Beijing, 100084, CN)
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 5308323, JP)
ダイキン工業株式会社 (〒23 大阪府大阪市北区中崎西２丁目４番１２号梅田センタービル Osaka, 5308323, JP)
LI, Zhixing (Qinghuayuan Haidianq, Beijing-shi 4, 100084, CN)
李 志信 (1 北京市海淀区清華▲園▼ 清華大学内 Beijing, 100084, CN)
清華大学 (1 北京市海淀区清華▲園▼ Beijing, 100084, CN)
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 5308323, JP)
ダイキン工業株式会社 (〒23 大阪府大阪市北区中崎西２丁目４番１２号梅田センタービル Osaka, 5308323, JP)
LI, Zhixing (Qinghuayuan Haidianq, Beijing-shi 4, 100084, CN)
李 志信 (1 北京市海淀区清華▲園▼ 清華大学内 Beijing, 100084, CN)
International Classes:
F28F1/40; F28D7/02; F28F1/10; F28F13/12
Attorney, Agent or Firm:
ONO, Yukio et al. (SHINJYU GLOBAL IP, South Forest Bldg. 1-4-19, Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, 5300054, JP)
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