Optimizing performance of DPHE using twisted tape with v-cuts and circular holes: An experimental and Gradient Boosting approach
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00646317" target="_blank" >RIV/61389021:_____/25:00646317 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22320/25:43932891
Result on the web
<a href="https://www.tandfonline.com/doi/full/10.1080/15567036.2025.2552998" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/15567036.2025.2552998</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/15567036.2025.2552998" target="_blank" >10.1080/15567036.2025.2552998</a>
Alternative languages
Result language
angličtina
Original language name
Optimizing performance of DPHE using twisted tape with v-cuts and circular holes: An experimental and Gradient Boosting approach
Original language description
This study examines the thermal transfer efficiency of a double-pipe heat exchanger (DPHE) enhanced using twisted tapes with varying numbers of v-cuts and circular perforations. Experiments were performed on twisted tapes with one to eight v-cuts, followed by tapes with four v-cuts combined with circular holes of 3 mm to 6 mm diameter. Twisted tape inserts are helical metallic strips that induce swirling flow, thereby enhancing fluid mixing and disrupting the thermal boundary layer. The results indicate that increasing the number of v-cuts enhances heat transfer, with the optimal performance observed at four v-cuts. Further enhancement was achieved by introducing perforations, where the configuration with four v-cuts and 5 mm holes yielded the best results. This setup achieved a 156% increase in Nusselt number compared to the plain tube and recorded the highest thermal–hydraulic performance (THP) of 2.65. A Gradient Boosting Tree (GBT) machine learning model was used to predict Nu, f, and THP, and the resulting correlations showed strong agreement with experimental data, with predictions within ± 10% deviation. These findings confirm that the integration of geometrical modification and data-driven modeling can significantly improve heat exchanger performance in a cost-effective, passive manner.
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
20704 - Energy and fuels
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
Energy Sources Part A-Recovery Utilization and Environmental Effects
ISSN
1556-7036
e-ISSN
1556-7230
Volume of the periodical
47
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
21
Pages from-to
2552998
UT code for WoS article
001565177300001
EID of the result in the Scopus database
2-s2.0-105015308120