Overview of calculation methods for determining the heat transfer coefficient for condensation of flue gas from biomass boilers in vertical tube condensers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00384127" target="_blank" >RIV/68407700:21220/25:00384127 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s00231-025-03577-1" target="_blank" >https://doi.org/10.1007/s00231-025-03577-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00231-025-03577-1" target="_blank" >10.1007/s00231-025-03577-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Overview of calculation methods for determining the heat transfer coefficient for condensation of flue gas from biomass boilers in vertical tube condensers

Popis výsledku v původním jazyce

The condensation of water vapor from flue gas in the energy cycles of power and heating plants is an important issue to increase the efficiency of the boiler or to separate water vapor from flue gas. A theoretical study of flue gas condensation from biomass boilers in vertical tube condensers was conducted. An overview of the methods available for determining the condensation heat transfer coefficient was compiled. Three approaches were identified to determine the heat transfer coefficient and condenser heat output according to the foundation of each method: experimental foundation (Empirical correlations), semi-theoretical foundation (Heat and mass transfer analogy, Diffusion layer model) and theoretical foundation (Boundary layer model). Empirical correlations represent the simplest way to predict the condensation heat transfer coefficient. However, the deviation of the predicted results from the experimental results is quite high, and since the equations usually lack some important driving parameters or are developed for a slightly different geometry of operating conditions, they are not reliable enough for the considered application. The Boundary layer model is very complex and impractical. Therefore, the use of the Heat and mass transfer analogy or the Diffusion layer model is the most effective for the mentioned application

Název v anglickém jazyce

Overview of calculation methods for determining the heat transfer coefficient for condensation of flue gas from biomass boilers in vertical tube condensers

Popis výsledku anglicky

The condensation of water vapor from flue gas in the energy cycles of power and heating plants is an important issue to increase the efficiency of the boiler or to separate water vapor from flue gas. A theoretical study of flue gas condensation from biomass boilers in vertical tube condensers was conducted. An overview of the methods available for determining the condensation heat transfer coefficient was compiled. Three approaches were identified to determine the heat transfer coefficient and condenser heat output according to the foundation of each method: experimental foundation (Empirical correlations), semi-theoretical foundation (Heat and mass transfer analogy, Diffusion layer model) and theoretical foundation (Boundary layer model). Empirical correlations represent the simplest way to predict the condensation heat transfer coefficient. However, the deviation of the predicted results from the experimental results is quite high, and since the equations usually lack some important driving parameters or are developed for a slightly different geometry of operating conditions, they are not reliable enough for the considered application. The Boundary layer model is very complex and impractical. Therefore, the use of the Heat and mass transfer analogy or the Diffusion layer model is the most effective for the mentioned application

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)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Heat and Mass Transfer

ISSN

0947-7411

e-ISSN

1432-1181

Svazek periodika

61

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

001507915900002

EID výsledku v databázi Scopus

2-s2.0-105008003906