Publication detail

Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers

HNÍZDIL, M. CHABIČOVSKÝ, M. RAUDENSKÝ, M. LEE, T.

Original Title

Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers

Type

journal article - other

Language

English

Original Abstract

We present a new Nusselt number correlation for spray cooling at large Reynolds numbers and high surface temperatures for water sprays impinging perpendicularly onto a flat plate. A large set of experimental data on spray cooling of hot surfaces with water has been analyzed, including the water temperature effects. For large-scale cooling, such as in industrial processes, large number of injection parameters such as number, type, pressure, and angle of the spray injection has led to a multitude of correlations that are difficult for general and practical applications. However, by synthesizing a set of experimental data where all of the above parameters have been varied, we find that the Nusselt number and therefore the heat transfer coefficient can be cast accurately as a function of the Reynolds number. Water is widely used as the coolant during spray cooling, and has a specific phase change characteristic. At large Reynolds number (Re > 100,000) and surface temperature (Ts > 600°C) ranges, which are of interest in large-scale spray cooling, the effect of water temperature is quite significant as it affects the film boiling close to the surface. This effect also has been parameterized using experimental data.

Keywords

Impinging Flow, Spray Cooling, Heat Transfer, Measurements

Authors

HNÍZDIL, M.; CHABIČOVSKÝ, M.; RAUDENSKÝ, M.; LEE, T.

Released

27. 7. 2016

Publisher

Scientific Research publishing

ISBN

2329-3330

Periodical

Journal of Flow Control, Measurement & Visualization

Year of study

4

Number

3

State

United States of America

Pages from

104

Pages to

113

Pages count

10

URL

http://www.scirp.org/journal/PaperInformation.aspx?PaperID=69089

Full text in the Digital Library

http://hdl.handle.net/11012/204298

BibTex

@article{BUT140001,
  author="Milan {Hnízdil} and Martin {Chabičovský} and Miroslav {Raudenský} and Tae-Woo {Lee}",
  title="Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers",
  journal="Journal of Flow Control, Measurement & Visualization",
  year="2016",
  volume="4",
  number="3",
  pages="104--113",
  doi="10.4236/jfcmv.2016.43010",
  issn="2329-3330",
  url="http://www.scirp.org/journal/PaperInformation.aspx?PaperID=69089"
}