Heat transfer intensification in compact heat exchangers with channels of various geometries and size
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0200962" target="_blank" >RIV/00216305:26210/26:0200962 - isvavai.cz</a>
Result on the web
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001526975300001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001526975300001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icheatmasstransfer.2025.109273" target="_blank" >10.1016/j.icheatmasstransfer.2025.109273</a>
Alternative languages
Result language
angličtina
Original language name
Heat transfer intensification in compact heat exchangers with channels of various geometries and size
Original language description
The need to decrease the sizes and masses of heat exchangers while preserving their performance has stipulated the development in compact heat exchangers (CHEs). It is supported by the additional push from process industries for increased recuperation of heat energy, facilitating better energy efficiency in process plants with strict limitations for space, material and cost. The adequate substitution of conventional heat exchangers by CHE in the same process conditions requires maintaining the same heat load not exceeding the allowable pressure losses. The different ways to increase the compactness of CHE are analysed, including the change of hydraulic diameter of heat exchanger channels, and the use of various methods of heat transfer intensification by changing channel geometry and flow structure. The Nusselt numbers and friction factors correlations for plane tubes, enhanced tubes and channels of plate heat exchangers are compared based on available literature data. A newer form of the core velocity equation is developed, which allows a comparison of the performance of CHE heating surfaces with different enhancement techniques and varying scales in specific process conditions. The results of the calculations illustrate the influence of the channel's hydraulic diameter and length on CHE thermal and hydraulic performance for channels with heat transfer intensification. The recommendations on choosing the best channel geometry and size, depending on specified process conditions and stream nature, are formulated.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International communications in heat and mass transfer
ISSN
0735-1933
e-ISSN
1879-0178
Volume of the periodical
167
Issue of the periodical within the volume
June
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
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UT code for WoS article
001526975300001
EID of the result in the Scopus database
2-s2.0-105009055502