Thesis-1972-DiMontegnacco.pdf (9.45 MB)
Heat transfer to boiling binary liquid mixtures in a vertical tube
thesis
posted on 2018-10-29, 11:35 authored by A. Di MontegnaccoExperiments were carried out using glycerol-water and distilled water
test solutions in a steam heated, stainless steel, natural circulation,
vertical tube evaporator (i.d. 0.488 in., o.d. 0.731 in., heated
length 4 ft.). The test liquid entered at its boiling point and the
effects of concentration, overall temperature difference, and
submergence on heat transfer were investigated. Maxima in heat transfer
coefficients, due to the formation of minimum sized bubbles, were found
to fade with increasing temperature difference and decreasing submergence
because of the increasing influence of the forced convection
mechanism over the nucleate boiling component. Experimental results
from distilled water, and isopropyl alcohol–water, and normal propyl
alcohol–water mixtures (from two previous workers) as well as those
from water–glycerol were correlated by a modification of the Lockhart and
Martinelli Parameter which included temperature and surface tension
factors, and a term accounting for the distinctive features of
boiling binary mixtures. [Continues.]
Funding
Continental Oil Company.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Publisher
© A. di MontegnaccoPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
1972Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en