Asset Details
Do you wish to reserve the book?
Heat transfer characteristics and entropy generation for wing-shaped-tubes with longitudinal external fins in cross-flow
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Heat transfer characteristics and entropy generation for wing-shaped-tubes with longitudinal external fins in cross-flow
Do you wish to request the book?
Heat transfer characteristics and entropy generation for wing-shaped-tubes with longitudinal external fins in cross-flow
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Heat transfer characteristics and entropy generation for wing-shaped-tubes with longitudinal external fins in cross-flow
2016
Overview
A numerical study is conducted to clarify heat transfer characteristics, effectiveness and entropy generation for a bundle of wingshaped-tubes attached to Longitudinal fins (LF) at downstream side. The air-side Rea ranged from 1.8 x 10
3
to 9.7 x 10
3
. The fin height (h
f
) and fin thickness (δ) have been changed as: (2 mm ≤ h
f
≤ 12 mm) and (1.5 mm ≤ δ ≤ 3.5 mm). The analysis of entropy generation is based on the principle of minimizing the rate of total entropy generation that includes the generation of entropy due to heat transfer and friction losses. The temperature field around the wing-shaped-tubes with (LF) is predicted using commercial CFD FLUENT 6.3.26 software package. Correlations of Nu
a
, St
a
, and Bejan number (
Be
), as well as the irreversibility distribution ratio (Φ) in terms of Re
a
and design parameters for the studied bundle are presented. Results indicated that, installing fins with heights from 2 to 12 mm results in an increase in Nua from 11 to 36% comparing with that of wing-shaped tubes without fins (NOF). The highest and lowest values of effectiveness (ε) at every value of the considered Re
a
range are occurred at h
f
= 6 mm and (NOF), respectively. The wing-shaped-tubes heat exchanger with h
f
= 6 mm has the highest values of (ε), efficiency index (η) and area goodness factor (
G
a
) and also the lowest values of Φ and hence the best performance comparing with other arrangements. The minimum values of Φ are occurred at h
f
= 6 mm. (
Be
) decreases with increasing Re
a
for all studied h
f
. The heat transfer irreversibility predominates for (1800 ≤ Re
a
≤ 4200) while the opposite is true for (6950 < Re
a
≤ 9700). δ has negligible effect on Nu
a
and heat transfer irreversibility. Comparisons between the experimental and numerical results of the present study and those, previously, obtained for similar available studies showed good agreements.
Publisher
Korean Society of Mechanical Engineers,Springer Nature B.V,대한기계학회
Subject
