Pregled bibliografske jedinice broj: 1112919
Numerical Analysis of Tube Heat Exchanger with Perforated Star-Shaped Fins
Numerical Analysis of Tube Heat Exchanger with Perforated Star-Shaped Fins // Fluids, 5 (2020), 4; 242, 15 doi:10.3390/fluids5040242 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1112919 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Numerical Analysis of Tube Heat Exchanger with
Perforated Star-Shaped Fins
Autori
Bošnjaković, Mladen ; Muhič, Simon
Izvornik
Fluids (2311-5521) 5
(2020), 4;
242, 15
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
star-shaped fin ; perforation ; heat exchanger ; extended surfaces
Sažetak
This article discusses the possibility of further reducing the mass of the heat exchanger with stainless steel star-shaped fins while achieving good heat transfer performance. For this purpose, we perforated the fins with holes Ø2, Ø3, and Ø4 mm. Applying computational fluid dynamics (CFD) numerical analysis, we determined the influence of each perforation on the characteristics of the flow field in the liquid–gas type of heat exchanger and the heat transfer for the range of Re numbers from 2300 to 16, 000. With a reduction in the mass of the fins to 17.65% (by Ø4 mm), perforated fins had greater heat transfer from 5.5% to 11.3% than fins without perforation. A comparison of perforated star-shaped fins with annular fins was also performed. Perforated fins had 51.8% less mass than annular fins, with an increase in heat transfer up to 26.5% in terms of Nusselt number.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
