Publicado 8 números por año
ISSN Imprimir: 1065-5131
ISSN En Línea: 1563-5074
Indexed in
Experimental Investigation of a Cross-Flow Heat Exchanger with Wing-Type Vortex Generators
SINOPSIS
In this study, heat and fluid flow in a plate-fin heat exchanger with wing-type convergent-divergent longitudinal vortex generators (CDLVGs) were studied experimentally. A cross-flow plate-type heat exchanger was designed and manufactured in the laboratory. Winglets were aligned with the angle of attack (β = 30°) positively and negatively to the main air flow direction, leading to eventually a better mixing phenomenon. Compared to the plate-fin geometry, the penalty of additional pressure drops of the other vortex generators was relatively insensitive to the change of the Reynolds number. The effects of the CDLVGs for various flow velocities on the cross-flow heat exchanger were investigated experimentally. Heat transfer experiments were performed under three different conditions. The highest heat transfer performance was found when the hot flow clack was half open and the cold flow clack was fully open in the second position. The correlations for the heat transfer coefficients and pressure drop characteristics were obtained as functions of the Reynolds number and the Prandtl number. The relationship between the effectiveness and the number of transfer units (ε-NTU) of the cross-flow heat exchanger were determined.
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Kotcioglu Isak, Caliskan Sinan, Cansiz Ahmet, Baskaya Senol, Second law analysis and heat transfer in a cross-flow heat exchanger with a new winglet-type vortex generator, Energy, 35, 9, 2010. Crossref
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Kotcioglu Isak, Cansiz Ahmet, Caliskan Sinan, Baskaya Senol, Transient Turbulent Flow and Heat Transfer Phenomena in Plate-Fin Type Cross-Flow Heat Exchanger, Heat Transfer Engineering, 32, 1, 2011. Crossref
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Enhanced Plate Fin Geometries with Round Tubes and Enhanced Circular Fin Geometries, in Heat Transfer Enhancement in Externally Finned Tubes and Internally Finned Tubes and Annuli, 2020. Crossref
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Vortex Generators, in Heat Transfer Enhancement in Plate and Fin Extended Surfaces, 2020. Crossref