Effect of boiling surface vibration on heat transfer
No Thumbnail Available
Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Verlag service@springer.de
Abstract
Experimental investigation of effect of forced vertical surface vibration on nucleate pool boiling heat transfer of saturated water at atmospheric pressure is presented in this paper. Vertical vibration was induced externally to the circular copper test surface on which boiling took place, using a vibration exciter. Frequency was varied in the range 0–25 Hz and amplitude of vibration was varied in the range 0–5 mm. Boiling takes place at much lower superheats for the same heat flux, slope of boiling curve decreases remarkably, when the surface is given external excitation. High frequency and high amplitude oscillations lead to more intensive heat transfer. There are some combinations of frequency and vibration amplitude, which cause up to two times increase in heat transfer coefficients. © 2016, Springer-Verlag Berlin Heidelberg.
Description
Keywords
Atmospheric pressure, Heat flux, Heat transfer, Heat transfer coefficients, Boiling surfaces, Experimental investigations, External excitation, High frequency HF, Nucleate pool boiling heat transfers, Vertical vibrations, Vibration amplitude, Vibration exciters, Thermoacoustics
Citation
Heat and Mass Transfer, 2017, 53, 1, pp. 73-79