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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU124799" target="_blank" >RIV/00216305:26210/16:PU124799 - isvavai.cz</a>
Result on the web
<a href="http://www.scirp.org/journal/PaperInformation.aspx?PaperID=69089" target="_blank" >http://www.scirp.org/journal/PaperInformation.aspx?PaperID=69089</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4236/jfcmv.2016.43010" target="_blank" >10.4236/jfcmv.2016.43010</a>

Result language
angličtina
Original language name
Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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