Affiliation:
1. Firat University Mechanical Engineering Department, Elazığ, Turkey
Abstract
In this study, the effect of the design on the heat transfer is numerically
investigated by using the "wavy inner tube" in a double-pipe heat exchanger.
A wavy inner tube was used in the design to give a turbulent effect to the
fluid along the inner tube of a double tube heat exchanger. In numerical
study, ANSYS 12.0 Fluent code program was used, and the basic protection
equations were solved for steady-state, three-dimensional and turbulent flow
conditions. The study was examined at Reynolds numbers ranging from 2700 to
5300. The obtained results were compared with the experimental data
performed under the same conditions. As a result of this comparison, after
it was seen that the results obtained from the numerical analysis and the
experimental results were compatible with each other, the wave number of the
inner tube was increased and analyzed with the ANSYS fluent code program.
When the data obtained as a result of the analyzes were evaluated, it was
seen that the highest heat transfer was obtained from the 16 wave tube heat
exchanger, which has the highest number of waves and under counter flow
conditions. The increase in heat transfer increased by 270% compared to the
straight tube.
Publisher
National Library of Serbia
Subject
Renewable Energy, Sustainability and the Environment