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RESEARCH PAPERS: Boiling and Nucleation

Relative Stability Between Nucleate and Film Boiling on a Nonuniformly Heated Plate Surface

[+] Author and Article Information
W. W. Lin, D. J. Lee

Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, 106, Republic of China

J. Heat Transfer 119(2), 326-331 (May 01, 1997) (6 pages) doi:10.1115/1.2824227 History: Received May 06, 1996; Revised January 22, 1997; Online December 05, 2007

Abstract

Flow boiling of methanol over a nonuniform, indirect conduction heating surface is investigated experimentally. An axial (discrete) heat flux distribution corresponding to a neutral stability region where nucleate and film boiling can coexist steadily is identified. Below such a heat flux distribution, nucleate boiling mode is more stable. Above this distribution, film boiling mode becomes more stable. We had employed an equal-area criterion for interpreting the heat flux and wall superheat relationship. Analogy between the wire boiling system is proposed. The differences between average and real transition boiling curves are discussed as well.

Copyright © 1997 by The American Society of Mechanical Engineers
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