The identification of local parameters for steam condensation with the presence of air in plate heat exchanger based on process mathematical model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU138503" target="_blank" >RIV/00216305:26210/20:PU138503 - isvavai.cz</a>
Result on the web
<a href="https://www.aidic.it/cet/20/81/173.pdf" target="_blank" >https://www.aidic.it/cet/20/81/173.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3303/CET2081173" target="_blank" >10.3303/CET2081173</a>
Alternative languages
Result language
angličtina
Original language name
The identification of local parameters for steam condensation with the presence of air in plate heat exchanger based on process mathematical model
Original language description
The condensation of vapour in the presence of noncondensing gas inside the channels of Plate Heat Exchanger (PHE) is studied on the example of steam condensation from its mixture with air. The mathematical one dimensional model of the process is developed. It is represented by the system of ordinary differential equations accounting for the change of process local parameters along the channel length. The identification of correlations for heat and mass transfer coefficients, as also pressure losses in condensing two-phase flow, is performed based on a comparison of modelling results with experimental data. The experimental model of PHE channel corrugated field consists of four corrugated plates forming three channels. The plate length is 1 m, its width is 0.225 m and a height of corrugations 0.005 m. The corrugations inclination angle to the main flow direction is 60 °. The correlations for two-phase flow are based on single-phase correlations obtained for a considered channel. For mass transfer coefficient, the most accurate results are obtained using approach accounting for transverse mass flux influence based on a stagnant film model with correction for density variation across the turbulent boundary layer. For the prediction of pressure drop in two-phase condensing flow the separate phases, model is used at low Reynolds numbers of the liquid film and dispersed annular flow model further on channel length, with growing mass flow rate of condensed liquid. The resulting mathematical model with correlations identified on experimental data can be used for the design of PHE for condensation of steam from its mixture with air. © 2020 Italian Association of Chemical Engineering - AIDIC. All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20704 - Energy and fuels
Result continuities
Project
<a href="/en/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Sustainable Process Integration Laboratory (SPIL)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Transactions
ISSN
2283-9216
e-ISSN
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Volume of the periodical
neuveden
Issue of the periodical within the volume
81
Country of publishing house
IT - ITALY
Number of pages
6
Pages from-to
1033-1038
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85092030739