Experimental investigation of CHF in transient boiling systems

Part 1 - natural convective boiling

Yong Tae Kang, Richard N. Christensen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An experimental investigation on Critical Heat Flux (CHF) in a temperature controlled natural convective boiling system is reported in this paper. The purpose of this study was to investigate the effects of the power transient and gap distance on CHF in narrow, vertical, rectangular channels between parallel plates. New parameters, rate of change of wall temperature at CHF point, ( dTw/dt) CHF, and nondimensional transient parameter, τ = z̄ 2fT sat( dTw/dt) CHF, were introduced and they were found to be appropriate transient parameters to evaluate the effects of power transients and geometry of the test section. The experimental results showed that the CHF values at downstream of the channel were recorded at first, and lower than those at upstream in the current transient boiling system and the CHF in transient natural convective boiling with vertical rectangular parallel plate channels was 1 - 2.1 times greater than the corresponding steady state CHF.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
PublisherASME
Pages39-49
Number of pages11
Volume294
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: 1994 Nov 61994 Nov 11

Other

OtherProceedings of the 1994 International Mechanical Engineering Congress and Exposition
CityChicago, IL, USA
Period94/11/694/11/11

Fingerprint

Boiling liquids
Heat flux
Temperature
Geometry

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Kang, Y. T., & Christensen, R. N. (1994). Experimental investigation of CHF in transient boiling systems: Part 1 - natural convective boiling. In American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD (Vol. 294, pp. 39-49). ASME.

Experimental investigation of CHF in transient boiling systems : Part 1 - natural convective boiling. / Kang, Yong Tae; Christensen, Richard N.

American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD. Vol. 294 ASME, 1994. p. 39-49.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kang, YT & Christensen, RN 1994, Experimental investigation of CHF in transient boiling systems: Part 1 - natural convective boiling. in American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD. vol. 294, ASME, pp. 39-49, Proceedings of the 1994 International Mechanical Engineering Congress and Exposition, Chicago, IL, USA, 94/11/6.
Kang YT, Christensen RN. Experimental investigation of CHF in transient boiling systems: Part 1 - natural convective boiling. In American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD. Vol. 294. ASME. 1994. p. 39-49
Kang, Yong Tae ; Christensen, Richard N. / Experimental investigation of CHF in transient boiling systems : Part 1 - natural convective boiling. American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD. Vol. 294 ASME, 1994. pp. 39-49
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