INFLUENCE OF WATER TEMPERATURE ON HEAT TRANSFER COEFFICIENT IN SPRAY COOLING OF STEEL SURFACES

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F12%3APU98563" target="_blank" >RIV/00216305:26210/12:PU98563 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.engmech.cz/2012/proceedings/pdf/052_Chabicovsky_M-FT.pdf" target="_blank" >http://www.engmech.cz/2012/proceedings/pdf/052_Chabicovsky_M-FT.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

INFLUENCE OF WATER TEMPERATURE ON HEAT TRANSFER COEFFICIENT IN SPRAY COOLING OF STEEL SURFACES

Popis výsledku v původním jazyce

Cooling of stainless steel surfaces with flat fan nozzles was studied experimentally. Several configurations of jets and pressures were tested. Tests were done with variable coolant (water) temperatures (20 C , 40 C , 60 C and 80 C). The influence of coolant temperature on the heat transfer coefficient was investigated. An increase in coolant temperature caused a significant decrease of the Leidenfrost temperature (temperature at which the character of boiling is changed - the film boiling is changed into nucleate boiling). Changing the water temperature from 20 C to 80 C caused a change of the Leidenfrost temperature of about 140 C. Furthermore it was observed that in a high temperature region (above Leidenfrost temperature) the heat transfer coefficient has the highest value for the lowest water temperature and for the high coolant temperature (80 C) the cooling intensity is the lowest.

Název v anglickém jazyce

INFLUENCE OF WATER TEMPERATURE ON HEAT TRANSFER COEFFICIENT IN SPRAY COOLING OF STEEL SURFACES

Popis výsledku anglicky

Cooling of stainless steel surfaces with flat fan nozzles was studied experimentally. Several configurations of jets and pressures were tested. Tests were done with variable coolant (water) temperatures (20 C , 40 C , 60 C and 80 C). The influence of coolant temperature on the heat transfer coefficient was investigated. An increase in coolant temperature caused a significant decrease of the Leidenfrost temperature (temperature at which the character of boiling is changed - the film boiling is changed into nucleate boiling). Changing the water temperature from 20 C to 80 C caused a change of the Leidenfrost temperature of about 140 C. Furthermore it was observed that in a high temperature region (above Leidenfrost temperature) the heat transfer coefficient has the highest value for the lowest water temperature and for the high coolant temperature (80 C) the cooling intensity is the lowest.

Druh

D - Stať ve sborníku

CEP obor

BJ - Termodynamika

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

ENGINEERING MECHANICS 2012

ISBN

978-80-86246-39-0

ISSN

—

e-ISSN

—

Počet stran výsledku

408

Strana od-do

126-127

Název nakladatele

J. Náprstek, C. Fischer

Místo vydání

Svratka

Místo konání akce

Svratka

Datum konání akce

14. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—