An Investigation of Flow Across Porous Layer Wrapped Flat Tube Banks
| Autor: | N. Alvandifar, Majid Saffar-Avval, E. Amani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Pressure drop
Optimal design Materials science General Chemical Engineering media_common.quotation_subject 0208 environmental biotechnology Second law of thermodynamics 02 engineering and technology Generation rate 010502 geochemistry & geophysics 01 natural sciences Catalysis 020801 environmental engineering Heat transfer Heat exchanger Thermal Porous layer Composite material 0105 earth and related environmental sciences media_common |
| Zdroj: | Alvandifar, N, Saffar-Avval, M & Amani, E 2019, ' An Investigation of Flow Across Porous Layer Wrapped Flat Tube Banks ', Transport in Porous Media, vol. 127, no. 2, pp. 329-352 . https://doi.org/10.1007/s11242-018-1195-y |
| DOI: | 10.1007/s11242-018-1195-y |
| Popis: | Performance of the staggered and inline tube bundles with three rows covered by a porous layer has been numerically studied from the viewpoint of the first and second law of thermodynamics. The results indicate that wrapping tubes with a porous layer bring about Nu number augmentation as well as pressure drop increment in comparison with the bare tube banks for both inline and staggered configurations and for both flat and circular tube shapes. In addition, bundles with porous layer wrapped flat tubes have a higher thermal performance and lower entropy generation rate than those of porous layer wrapped circular tubes, especially for the staggered configuration. The investigation on heat transfer, pressure drop and entropy generation rate is performed for different pitch spacings as well as different thicknesses of porous layer in order to find the optimal designs. The porous layer wrapped banks with flattened tubes show a great potential for application in heat exchangers. |
| Databáze: | OpenAIRE |
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