Influence of the impact angle and pressure on the spray cooling of vertically moving hot steel surfaces

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU114010" target="_blank" >RIV/00216305:26210/15:PU114010 - isvavai.cz</a>
Result on the web
<a href="http://mit.imt.si/Revija/" target="_blank" >http://mit.imt.si/Revija/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17222/mit.2013.239" target="_blank" >10.17222/mit.2013.239</a>

Result language
angličtina
Original language name
Influence of the impact angle and pressure on the spray cooling of vertically moving hot steel surfaces
Original language description
The cooling of vertically moving strips is used very often to obtain the required material properties. Water spray cooling has to be used when a high cooling intensity is needed. Our Heat Transfer and Fluid Flow Laboratory is equipped with a testing device which allows vertical movement of a heated experimental plate (sheet). Two different sizes of flat-jet nozzles were tested with different water pressures and angles of the water impact (inclination angles of the spraying bar). The water-pressure range was between 2 bar and 9.3 bar and the angle of the water impact changed from 20 deg to 40 deg. The dependence of the heat-transfer coefficient on the surface temperature was evaluated for each experiment. Interesting results were obtained from the comparison of these experimental results, showing that the heat-transfer coefficient and the Leidenfrost temperature increase with the increasing water pressure. Very interesting results were obtained during the tests with different inclination angles. The highest heat-transfer coefficient was obtained for the angle of 20 deg and the lowest value of the heat-transfer coefficient was obtained for the angle of 40 deg at the surface temperatures of around 200 degrese of Celsius.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20303 - Thermodynamics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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