Investigation of flow non-uniformities in the cross-flow heat exchanger with elliptical tubes
Authors:
- Stanisław Łopata,
- Paweł Ocłoń,
- Tomasz Stelmach
Abstract
In heat exchangers, especially those with the cross-flow arrangement, it is nearly impossible to achieve the uniform distribution of the working fluid in the tubular space with the currently used inlet and outlet chambers (in some constructions as well). The improper inflow conditions to individual tubes, including those with an elliptical cross-section - often used because of their favorable features compared to round tubes, is the cause of improper heat transfer. In this respect, transitional flow is of particular importance. This flow regime is complex and challenging to model. Therefore, it is necessary to perform experimental verification. For this purpose, an appropriate stand was built, allowing to investigate the flow of the working fluid (water) to the elliptical tubes in the cross-current heat exchanger. The paper presents the results of measurements for manifold geometry, which are currently used in practice (for heat exchanger constructions). The analysis of the measurement data confirms the nonuniform flow distribution to individual tubes of the heat exchanger.
- Record ID
- CUTf701ec662f5b4d4c8865384a31176fb3
- Publication categories
- ; ;
- Author
- Journal series
- E3S Web of Conferences, ISSN 2555-0403, e-ISSN 2267-1242, Irregular
- Issue year
- 2019
- Vol
- 108
- Pages
- [1-10]
- Article number
- 01009
- Other elements of collation
- il. (w tym kolor.); Bibliografia (na s.) - 10; Bibliografia (liczba pozycji) - 7; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 108
- Conference
- Energy and Fuels 2018, Energetyka i Paliwa 2018, 2018, 19-09-2018 - 21-09-2018, Kraków, Polska
- Keywords in English
- heat exchangers, test stand, flow distribution, tubular space, laminar, transitional and turbulent flow regimes
- DOI
- DOI:10.1051/e3sconf/201910801009 Opening in a new tab
- URL
- https://doi.org/10.1051/e3sconf/201910801009 Opening in a new tab
- Related project
- Modelowanie matematyczne zjawisk przepływowo-cieplnych oraz analizy wytrzymałościowe wymienników ciepła z rurami ożebrowanymi. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- License
- Score (nominal)
- 5
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTf701ec662f5b4d4c8865384a31176fb3/
- URN
urn:pkr-prod:CUTf701ec662f5b4d4c8865384a31176fb3
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.