Saturated and Subcooled Pool Boiling Heat Transfer in Mixtures of Water and Glycerin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00350472" target="_blank" >RIV/68407700:21220/23:00350472 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1080/08916152.2022.2027574" target="_blank" >https://doi.org/10.1080/08916152.2022.2027574</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/08916152.2022.2027574" target="_blank" >10.1080/08916152.2022.2027574</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Saturated and Subcooled Pool Boiling Heat Transfer in Mixtures of Water and Glycerin

Popis výsledku v původním jazyce

Heat transfer coefficient (HTC) was experimentally measured for saturated and subcooled pool boiling of binary mixtures of water and glycerin. Saturated boiling was studied for mixtures with water mass fractions ????w from 100% to 60% on horizontal flat nickel-plated surfaces at heat fluxes from 50 to 650 kW/m2 at atmospheric pressure. Subcooled boiling was investigated in the range of subcooling from 0 to 30 K at heat fluxes of approximately 250, 450 and 650 kW/m2. It was found that mixture effects have a significant impact on saturated boiling HTC even for mixtures with very low content of glycerin as significant drops of HTC were observed for subtle changes in composition for mixtures of high ????w. Measured HTC was successfully correlated with the combination of Yagov (1999) and Inoue and Monde (2009) correlations with a mean relative error of 12%. A simple empirical HTC correlation is also proposed. For subcooled boiling, developed subcooled boiling regime was reached for all investigated heat fluxes. For this regime, correlations which were able to predict HTC for saturated boiling were employed to predict subcooled boiling HTCs for all investigated concentrations, heat fluxes and subcoolings. Effect of subcooling and effect of liquid composition on total HTC were of the same importance for mixtures with higher water content. With increasing concentration of glycerin in the mixture, decrease of total HTC with increasing subcooling became more significant.

Název v anglickém jazyce

Saturated and Subcooled Pool Boiling Heat Transfer in Mixtures of Water and Glycerin

Popis výsledku anglicky

Heat transfer coefficient (HTC) was experimentally measured for saturated and subcooled pool boiling of binary mixtures of water and glycerin. Saturated boiling was studied for mixtures with water mass fractions ????w from 100% to 60% on horizontal flat nickel-plated surfaces at heat fluxes from 50 to 650 kW/m2 at atmospheric pressure. Subcooled boiling was investigated in the range of subcooling from 0 to 30 K at heat fluxes of approximately 250, 450 and 650 kW/m2. It was found that mixture effects have a significant impact on saturated boiling HTC even for mixtures with very low content of glycerin as significant drops of HTC were observed for subtle changes in composition for mixtures of high ????w. Measured HTC was successfully correlated with the combination of Yagov (1999) and Inoue and Monde (2009) correlations with a mean relative error of 12%. A simple empirical HTC correlation is also proposed. For subcooled boiling, developed subcooled boiling regime was reached for all investigated heat fluxes. For this regime, correlations which were able to predict HTC for saturated boiling were employed to predict subcooled boiling HTCs for all investigated concentrations, heat fluxes and subcoolings. Effect of subcooling and effect of liquid composition on total HTC were of the same importance for mixtures with higher water content. With increasing concentration of glycerin in the mixture, decrease of total HTC with increasing subcooling became more significant.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Centrum výzkumu nízkouhlíkových energetických technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Experimental Heat Transfer

ISSN

0891-6152

e-ISSN

1521-0480

Svazek periodika

36

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

29

Strana od-do

283-311

Kód UT WoS článku

000749489800001

EID výsledku v databázi Scopus

2-s2.0-85124231314