Local Heat Transfer Coefficients Measured with Temperature Oscillation IR Thermography

Publication date
2008
Document type
PhD thesis (dissertation)
Author
Freund, Sebastian
Advisor
Kabelac, Stephan
Referee
Herwig, Heinz
Granting institution
Helmut-Schmidt-Universität / Universität der Bundeswehr Hamburg
Exam date
2008-02-12
Organisational unit
DDC Class
620 Ingenieurwissenschaften
Keyword
Plate Heat Exchanger
Vortex Generator
Spray Cooling
Abstract
A new method to visualize local heat transfer coefficients on heat exchanger surfaces is presented and experimental measurement results on pipe flow, vortex generators, impinging jets, a spray cooling system and a plate heat exchanger are shown. The method relies on IR thermography to measure the heat transferring wall’s temperature response to an oscillating heat flux and a numerical wall model for the calculation of the heat transfer coefficients. This study of local heat transfer coefficients is completed with a comparison of CFD results to the measured data.
Version
Not applicable (or unknown)
Access right on openHSU
Open access