VISUALIZATION OF NATURAL CONVECTION HEAT TRANSFER FROM A HORIZONTAL CYLINDER BETWEEN TWO VERTICAL PLATES

Hara, Toshitsugu; Shibata, Koichi; Tohnosu, Shigeki; Hijikata, Kunio

Imaging in Transport Processes

ISBN Druckformat: 978-1-56700-382-6

VISUALIZATION OF NATURAL CONVECTION HEAT TRANSFER FROM A HORIZONTAL CYLINDER BETWEEN TWO VERTICAL PLATES

Toshitsugu Hara Department of Systems Engineering, Nippon Institute of Technology Miyashiro, Saitama, 345-8501 Japan

Koichi Shibata Development Dept., Tochigi Works, Hitachi Ltd., 800 Ohira-machi, shimotsuga-gun, Tochigi, 329-44 Japan

Shigeki Tohnosu Energy Research Laboratory, Hitachi Ltd., 1168 Moriyama-cho, Hitachi-shi, Ibaraki, 316,Japan

Kunio Hijikata Department of Mechano-Aerospace Engineering, Tokyo Institute of Technology, Japan

Abstrakt

Natural convection heat transfer is widely used in many applications of beat exchangers and cooling of electronic equipment. It does not employ electric fans or any moving parts. It's valuable characteristics include high reliability, low noise and no need of an additional power source. Heat transfer coefficient of natural convection, however, is significantly lower than that of forced convection, and is limited to cases of relatively low heat flux.

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