Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>ost</sub> - Ostatní články v recenzovaných periodicích
CEP obor
—
OECD FORD obor
20303 - Thermodynamics
Návaznosti výsledku
Projekt
<a href="/cs/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Flow Control, Measurement & Visualization
ISSN
2329-3330
e-ISSN
—
Svazek periodika
4
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
10
Strana od-do
104-113
Kód UT WoS článku
—
EID výsledku v databázi Scopus
—