Library Subscription: Guest
Home Archives Officers Future meetings Assembly for International Heat Transfer Conferences
International Heat Transfer Conference 4

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

HEAT TRANSFER AND DNB HEAT FLUX IN TRANSIENT BOILING

Hiroshi Kawamura
Department of Mechanical Engineering Faculty of Science and Technology Science University of Tokyo Noda-shi, Chiba 278 Japan

Fujio Tachibana
Department of Nuclear Engineering, Faculty of Engineering University of Tokyo, Bunkyo-ku, Tokyo, Japan

Mamoru Akiyama
Dept. of Nuclear Engineering, University of Tokyo 7-3-1. Hongo, Bunkyo-ku, Tokyo 113. Japan

Abstract

Test pieces of different thickness were heated by electric current with various power functions. Pool and flow boilings of water were studied at atmospheric pressure. In subcooled boiling, heat transfer rate is fairly high even after the DNB (Departure from Nucleate Boiling) point. DNB heat flux increases up to a saturation value with increasing test piece thickness. When power has maintained a non-zero level before the transient starts, the DNB heat flux is considerably reduced. A model analysis of transient saturated pool boiling is developed. The calculated results are compared with experimental data.

Download article Publication Ethics and Malpractice Recommend to my Librarian Bookmark this Page