Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 1.199 Facteur d'impact sur 5 ans: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2015010735
pages 243-258

TEMPERATURE FLUCTUATION CHARACTERISTICS OF POOL BOILING WITHIN SPACE-CONFINED STRUCTURES

Xuehu Ma
Liaoning Key Laboratory of Clean Utilization of Chemical Resources, Institute of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Wei Xu
Institute of Chemical Engineering, Liaoning Key Laboratory of Clean Utilization of Chemical Resources, Dalian University of Technology, Dalian, China
Chunjian Yu
Institute of Chemical Engineering, Dalian University of Technology, Dalian 116012, China
Zhong Lan
Institute of Chemical Engineering, Liaoning Key Laboratory of Clean Utilization of Chemical Resources, Dalian University of Technology, Dalian, China
Zhaolong Hao
Institute of Chemical Engineering, Dalian University of Technology, Dalian 116012, China

RÉSUMÉ

In this paper, the surface temperature fluctuation magnitude and frequency at the nucleation sites in the process of boiling a specially designed space-confined structure is investigated using infrared thermography. Water and ethanol are used as working fluids. The results show that the magnitude of temperature fluctuations is less than 1 K in experiments, while the theoretical prediction of this value is equal to at least 5 K if bubbles are in direct contact with the heating surface. The average temperature fluctuation frequencies and the average bubble departure frequencies on plain and E0.15 surfaces are close in value to each other. A remarkable discrepancy can be found between the surface temperature fluctuation frequency and the bubble departure frequency. The experimental results illustrate that bubbles are not in direct contact with the heating surface, instead, a microlayer of liquid exists between bubbles and heating surface all the time. The bubbles predominately affect the boiling heat transfer characteristics through the temperature fluctuation of the liquid layer.


Articles with similar content:

A THEORETICAL MODEL FOR BUBBLE FREQUENCY IN NUCLEATE POOL BOILING INCLUDING SURFACE EFFECTS
International Heat Transfer Conference 6, Vol.1, 1978, issue
Ross L. Judd, M. S. M. Shoukri
The Influence of Single Bubble Growth and Bubble Coalescence on Boiling Heat Transfer
International Heat Transfer Conference 15, Vol.38, 2014, issue
Peter Stephan, Axel Sielaff
Bubble dynamics and acoustic phenomena in subcooled pool boiling
International Heat Transfer Conference 12, Vol.40, 2002, issue
Jens J. Schroder, Andreas Bode
BUBBLE ENERGY AND LATENT HEAT FLUX ESTIMATION
Heat Transfer Research, Vol.50, 2019, issue 1
Jure Voglar
Interfacial Instability on Vapor Bubble Exposed to Subcooled Pool
International Heat Transfer Conference 15, Vol.38, 2014, issue
Ichiro Ueno, Tomohiro Osawa, Chungpyo Hong, Takahito Saiki, Jun Ando, Toshihiro Kaneko