Date of Award

2019

Publication Type

Master Thesis

Degree Name

M.A.Sc.

Department

Mechanical, Automotive, and Materials Engineering

First Advisor

D.S-K. Ting

Rights

info:eu-repo/semantics/openAccess

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Abstract

Delta winglet is an effective means to passively augment heat convection from a hot surface such as a solar panel. The effects of an inclination angle on the flow downstream of the winglet were studied. A delta winglet with an aspect ratio (c/h) of 2 and an attack angle of 30 degrees was mounted on a flat plate to scrutinize the role of its inclination angle (90° and 120°) on the flow downstream. The inclined winglet was placed in a wind tunnel, and the flow was measured by the hotwire. The experiment shows the 120-degree-inclination-angle delta winglet can generate an inflow velocity larger than 90 degrees. The heat transfer enhancement caused by the delta winglet was then investigated. Three different inclination angles (60°, 90° and 120°) of the delta winglet were studied, and a thermal camera was used to maintain the heat transfer enhancement of the heated panel. The result shows that the delta winglet with the inclination angle of 120 degrees can generate the best thermal performance.

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