Optimization of conduits' shape in micro heat exchangers

An approximate theory is derived to compute the thermal resistances of flat plate micro heat exchangers whose surfaces are heated with uniform flux. It is demonstrated that the thermal resistance can be minimized by proper selection of uniform conduit geometry. Further reductions in the maximum heat...

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Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 41; no. 18; pp. 2717 - 2723
Main Author Bau, Haim H.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.09.1998
Elsevier
Subjects
Applied sciences
Approximation theory
Devices using thermal energy
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat exchangers (included heat transformers, condensers, cooling towers)
Heat flux
Heat resistance
Machine design
Thermal gradients
Rectangular pipe
Geometrical shape
Thermal resistance
Heat exchanger
Microstructure
Modeling
Optimization
Optimal design
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Summary:An approximate theory is derived to compute the thermal resistances of flat plate micro heat exchangers whose surfaces are heated with uniform flux. It is demonstrated that the thermal resistance can be minimized by proper selection of uniform conduit geometry. Further reductions in the maximum heated surface temperature and in the heated surface temperature gradients can be achieved by varying the conduit's cross-sectional dimensions as a function of the axial coordinate. This paper illustrates that a conduit's shape can be customized so as to achieve desired objectives.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(98)00003-9