The influence of plates corrugations angle on PHE thermal performance in condensing of steam with the presence of air

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU150491" target="_blank" >RIV/00216305:26210/23:PU150491 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s00231-023-03361-z" target="_blank" >https://link.springer.com/article/10.1007/s00231-023-03361-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00231-023-03361-z" target="_blank" >10.1007/s00231-023-03361-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of plates corrugations angle on PHE thermal performance in condensing of steam with the presence of air

Popis výsledku v původním jazyce

The process of steam condensation in the presence of non-condensing air inside channels of Plate Heat Exchanger (PHE) is investigated based on experimental data and the results of mathematical modelling. The model consists of a system of ordinary differential equations with nonlinear right parts, solved numerically on a computer. It describes the local process parameters distribution in channel. Each of the PHE tested samples consists of four corrugated plates with three channels between them for the flow of hot and cold streams. The experimental samples have different angles of corrugations to the longitudinal plate axis (60 degrees, 45 degrees and 30 degrees). The applicability of heat-momentum and heat-mass transport analogies for such channels was confirmed, as also the preservation of the Equation for the correction on effect of transverse mass flux in criss-cross flow channels. The specific form of such Equation is proposed. It allows mathematical modelling of steam-air mixture condensation using single-phase correlations for PHE channels. The intensification of overall heat transfer compared to condensation in flat wall channels is observed. It enables the decrease of PHE heat transfer area from 2 up to 4 times compared to a flat wall channel for the same process conditions.

Název v anglickém jazyce

The influence of plates corrugations angle on PHE thermal performance in condensing of steam with the presence of air

Popis výsledku anglicky

The process of steam condensation in the presence of non-condensing air inside channels of Plate Heat Exchanger (PHE) is investigated based on experimental data and the results of mathematical modelling. The model consists of a system of ordinary differential equations with nonlinear right parts, solved numerically on a computer. It describes the local process parameters distribution in channel. Each of the PHE tested samples consists of four corrugated plates with three channels between them for the flow of hot and cold streams. The experimental samples have different angles of corrugations to the longitudinal plate axis (60 degrees, 45 degrees and 30 degrees). The applicability of heat-momentum and heat-mass transport analogies for such channels was confirmed, as also the preservation of the Equation for the correction on effect of transverse mass flux in criss-cross flow channels. The specific form of such Equation is proposed. It allows mathematical modelling of steam-air mixture condensation using single-phase correlations for PHE channels. The intensification of overall heat transfer compared to condensation in flat wall channels is observed. It enables the decrease of PHE heat transfer area from 2 up to 4 times compared to a flat wall channel for the same process conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2023

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

9

Číslo periodika v rámci svazku

59

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

16

Strana od-do

1575-1590

Kód UT WoS článku

000956709900002

EID výsledku v databázi Scopus

2-s2.0-85150956118