Detail publikace

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

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

Originální název

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

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Impinging Flow, Spray Cooling, Heat Transfer, Measurements

Autoři

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

Vydáno

27. 7. 2016

Nakladatel

Scientific Research publishing

ISSN

2329-3330

Periodikum

Journal of Flow Control, Measurement & Visualization

Ročník

4

Číslo

3

Stát

Spojené státy americké

Strany od

104

Strany do

113

Strany počet

10

URL

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

Plný text v Digitální knihovně

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"
}