Visual and quantitative investigation on heat flow performance from heat sinks using digital holographic interferometer

Varun Kumar; Chandra Shakher

doi:10.1117/12.2537516

18 November 2019 Visual and quantitative investigation on heat flow performance from heat sinks using digital holographic interferometer

Varun Kumar, Chandra Shakher

Author Affiliations +

Proceedings Volume 11188, Holography, Diffractive Optics, and Applications IX; 111881C (2019) https://doi.org/10.1117/12.2537516
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

This paper presents the visual and quantitative investigations on the heat flow performance from plate fin heat sinks using digital holographic interferometry (DHI). In the experiment, double exposure DHI is used to calculate the temperature distribution surrounding the heat sink. First, a digital hologram of ambient air surrounding heat sink is recorded; when no power is applied across the load resistor connected to the bottom of the heat sink. After that, a series of holograms of hot air surrounding the heat sinks are recorded at a constant time interval. The phase difference maps between the heated air and ambient air at different time interval around the heat sink are calculated by numerical method. Visual inspection of reconstructed phase difference maps of air field surrounding the heat sink at a different time provide the qualitative information of temperature variation trend of air field surrounding the heat sink during the heat dissipation process. Quantitative information of temperature distribution surrounding the heat sink is obtained from the relationship between the digitally reconstructed phase difference map of ambient air and heated air. The effect of the number of channels/fin spacing on the heat flow performance of heat sink with equal width and length is also investigated. Experimental data is used to calculate the heat transfer parameters such as local heat flux and convective heat transfer coefficients.

Citation Download Citation

Varun Kumar and Chandra Shakher "Visual and quantitative investigation on heat flow performance from heat sinks using digital holographic interferometer", Proc. SPIE 11188, Holography, Diffractive Optics, and Applications IX, 111881C (18 November 2019); https://doi.org/10.1117/12.2537516

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Digital holography

Holographic interferometry

Visualization

Avionic systems

Thermal effects

Electronic components

Holograms

Show All Keywords

Keywords/Phrases

Search In:

Publication Years