Influence of sawtooth twisted tape on thermal enhancement of heat exchanger tube

This article employs sawtooth twisted tapes to generate swirling flow and interrupted flowing disturbance in order to increase the level of heat transfer rate. The influences of the sawtooth twisted tape (S-TT) on enhanced heat transfer rate, friction factor and aerothermal performance index (API) b...

Full description

Saved in:
Bibliographic Details
Published in:Energy reports 2023-03, Vol.9, p.696-703
Main Authors: Samutpraphut, Boonsong, Eiamsa-ard, Smith, Chuwattanakul, Varesa, Thianpong, Chinaruk, Maruyama, Naoki, Hirota, Masafumi
Format: Article
Language:English
Subjects:
Heat exchanger tube
Heat transfer
Sawtooth twisted tape
Swirl flow
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This article employs sawtooth twisted tapes to generate swirling flow and interrupted flowing disturbance in order to increase the level of heat transfer rate. The influences of the sawtooth twisted tape (S-TT) on enhanced heat transfer rate, friction factor and aerothermal performance index (API) behaviors are analyzed. The sawtooth twisted tapes (S-TTs) possessing constant pitch/twist ratio (y//W) of 3.0 and six sawtooth angles (α) of 20°, 30°, 40°, 50°, 60°, and 70° are assessed. Considering turbulent flow using air as the testing fluid, experiments were investigated at 6,000
ISSN:2352-4847
2352-4847
DOI:10.1016/j.egyr.2022.11.029