Detail publikace
Comparison of aerodynamic noise and heat transfer for shell-and-tube heat exchangers with continuous helical and segmental baffles
Cao, Y. Ke, H. Klemeš, J.J. Zeng, M. Wang, Q.
Anglický název
Comparison of aerodynamic noise and heat transfer for shell-and-tube heat exchangers with continuous helical and segmental baffles
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
Flow-induced noise and vibration problems of tube bundles in heat-exchangers exist for a long time and often cause severe destruction, performance reduction and large maintenance charge. It is essential to study the flow-induced noise in tube bundles and develop high-efficiency noise elimination measures. The theoretical analysis and numerical simulation method are coupled to compare the aerodynamic noise and heat transfer in shell-and-tube heat exchangers with continuous helical and segmental baffles. The novelty of this paper is to compare the flow-induced noise of tube bundles in shell-and-tube heat-exchangers with continuous helical and segmental baffles. And as an initial trial, this study intends to investigate the aerodynamic noise based on the flow field and acoustic field matching perspective. The results show that the sound pressure, the pressure drop per unit tube length and the Nusselt number all increase with the increase of Reynolds number. And the average synergy angle of continuous helical baffles is 11% lower than that of segmental baffles, which corresponds with 23-37% lower sound pressure. © 2020 Elsevier Ltd
Anglický abstrakt
Flow-induced noise and vibration problems of tube bundles in heat-exchangers exist for a long time and often cause severe destruction, performance reduction and large maintenance charge. It is essential to study the flow-induced noise in tube bundles and develop high-efficiency noise elimination measures. The theoretical analysis and numerical simulation method are coupled to compare the aerodynamic noise and heat transfer in shell-and-tube heat exchangers with continuous helical and segmental baffles. The novelty of this paper is to compare the flow-induced noise of tube bundles in shell-and-tube heat-exchangers with continuous helical and segmental baffles. And as an initial trial, this study intends to investigate the aerodynamic noise based on the flow field and acoustic field matching perspective. The results show that the sound pressure, the pressure drop per unit tube length and the Nusselt number all increase with the increase of Reynolds number. And the average synergy angle of continuous helical baffles is 11% lower than that of segmental baffles, which corresponds with 23-37% lower sound pressure. © 2020 Elsevier Ltd
Klíčová slova anglicky
Aerodynamic noise; Aerodynamic noise; Field synergy principle; Heat transfer; Numerical simulation; Shell-and-tube heat exchangers
Vydáno
25.02.2021
Nakladatel
Elsevier Ltd
ISSN
1359-4311
Číslo
185
Strany od–do
116341–116341
Počet stran
13
BIBTEX
@article{BUT168346,
author="Jiří {Klemeš},
title="Comparison of aerodynamic noise and heat transfer for shell-and-tube heat exchangers with continuous helical and segmental baffles",
year="2021",
number="185",
month="February",
pages="116341--116341",
publisher="Elsevier Ltd",
issn="1359-4311"
}