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BROŽOVÁ, T. CHABIČOVSKÝ, M. HORSKÝ, J.
Originální název
Influence of the surface roughness on the cooling intensity during spray cooling
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
The surface roughness plays an important role during spray cooling of hot surfaces in a presence of the boiling. Bubbles are formed in small cavities on the surface during nucleate pool boiling. Enhanced surface roughness causes that more bubbles are formed and it causes increased cooling intensity. The surface with increased roughness has also bigger surface area, which allows higher heat flow between surface and surrounding water. The influence of the surface roughness during pool boiling was investigated by many authors. The increased surface roughness causes shift of the Leidenfrost temperature to higher temperatures and increases critical heat flux during pool boiling. The influence of the surface roughness during spray cooling of hot surfaces was not still sufficiently investigated and it is not known if the effect of the surface roughness is similar like in a case of the pool boiling. Experiments for describing the effect of the surface roughness on the cooling intensity were conducted with water nozzle with flat jet. Test samples were heated in a protective atmosphere at a temperature 730 ºC and then cooled to the room temperature. Test samples were made of the austenitic stainless steel to minimize the forming of the scales on the surface. Results shoving influence of the surface roughness on the critical heat flux and on the Leidenfrost temperature are presented.
Klíčová slova
surface roughness, spray cooling, Leidenfrost temperature, critical heat flux, heat transfer coefficient
Autoři
BROŽOVÁ, T.; CHABIČOVSKÝ, M.; HORSKÝ, J.
Vydáno
25. 5. 2016
Nakladatel
TANGER Ltd.
Místo
Ostrava
ISBN
978-80-87294-67-3
Kniha
METAL 2016, 25rd International Conference on Metallurgy and Materials, Conference Proceedings
Strany od
41
Strany do
46
Strany počet
6
URL
http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=3&SID=1FrthULdZ1E22feXqwd&page=1&doc=1
BibTex
@inproceedings{BUT125891, author="Tereza {Kůdelová} and Martin {Chabičovský} and Jaroslav {Horský}", title="Influence of the surface roughness on the cooling intensity during spray cooling", booktitle="METAL 2016, 25rd International Conference on Metallurgy and Materials, Conference Proceedings", year="2016", pages="41--46", publisher="TANGER Ltd.", address="Ostrava", isbn="978-80-87294-67-3", url="http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=3&SID=1FrthULdZ1E22feXqwd&page=1&doc=1" }