Szczegóły publikacji
Opis bibliograficzny
Testing of heat transfer coefficients and frictional losses in internally ribbed tubes and verification of results through CFD modelling / Sławomir Grądziel, Karol Majewski, Marek Majdak, Łukasz MIKA, Karol SZTEKLER, Rafał Kobyłecki, Robert Zarzycki, Małgorzata Pilawska // Energies [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1996-1073. — 2022 — vol. 15 iss. 1 art. no. 207, s. 1–17. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 16–17, Abstr. — Publikacja dostępna online od: 2021-12-29
Autorzy (8)
- Grądziel Sławomir
- Majewski Karol
- Majdak Marek
- AGHMika Łukasz
- AGHSztekler Karol
- Kobyłecki Rafał
- Zarzycki Robert
- Pilawska Małgorzata
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 138486 |
|---|---|
| Data dodania do BaDAP | 2022-01-08 |
| Tekst źródłowy | URL |
| DOI | 10.3390/en15010207 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Energies |
Abstract
This paper presents experimental determination of the heat transfer coefficient and the friction factor in an internally rifled tube. The experiment was carried out on a laboratory stand constructed in the Department of Energy of the Cracow University of Technology. The tested tube is used in a Polish power plant in a supercritical circulating fluidized bed (CFB) boiler with the power capacity of 460 MW. Local heat transfer coefficients were determined for Reynolds numbers included in the range from ~6000 to ~50,000, and for three levels of the heating element power. Using the obtained experimental data, a relation was developed that makes it possible to determine the dimensionless Chilton–Colburn factor. The friction factor was also determined as a function of the Reynolds number ranging from 20,000 to 90,000, and a new correlation was developed that represents the friction factor in internally ribbed tubes. The local heat transfer coefficient and the friction factor obtained during the testing were compared with the CFD modelling results. The modelling was performed using the Ansys Workbench application. The k-ω, the k-ε and the transition SST (Share Stress Transport) turbulence models were applied.
