New alcohol solutions for heat pipes: Marangoni effect and heat transfer enhancement

Binary mixtures with a non-linear dependence of the surface tension with temperature were investigated as potential working fluids for wicked heat pipes to take advantage of Marangoni effect. Model experiments were carried out using quartz cuvette and glass tubes filled with different solutions and...

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Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 51; no. 25; pp. 6199 - 6207
Main Authors di Francescantonio, Nicola, Savino, Raffaele, Abe, Yoshiyuki
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.12.2008
Elsevier
Subjects
Alcohol solutions
Applied sciences
Devices using thermal energy
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat pipes
Heat transfer
Marangoni effect
Marangoni effect
Heat transfer
Alcohol solutions
Binary mixture
Numerical analysis
Heat pipe
Alcohol
Experimental study
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Summary:Binary mixtures with a non-linear dependence of the surface tension with temperature were investigated as potential working fluids for wicked heat pipes to take advantage of Marangoni effect. Model experiments were carried out using quartz cuvette and glass tubes filled with different solutions and subject to thermal gradient: a mass flow directed towards hot zones along vapor–liquid interface was observed, while surface temperature profiles were recorded with an IR camera. Experiments on thermal performance of commercial heat pipes finally showed that using suitable binary mixtures better performances can be achieved in comparison with heat pipes filled with water.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2008.01.040