Numerical study on a slit fin-and-tube heat exchanger with longitudinal vortex generators

Comparison of metal foam heat exchangers to a finned heat exchanger for low Reynolds number applications

“…Notice that the product of the surface efficiency and convective heat transfer coefficient are presented as one entity because the surface efficiency and the convective heat transfer coefficient clearly form one component of the total heat transfer resistance. Convective results have also been presented this way for interrupted fin designs [53][54]. The convective heat transfer coefficients are reported dimensionless as Colburn j-factors (including the surface efficiency) according to:…”

Thermal performance of plate-fin heat exchanger using passive techniques: vortex-generator and nanofluid

“…These appropriate thermal-hydraulic specifications of the VGs as a passive heat transfer enhancement technique have motivated many investigators to study and optimize the performance of these geometries in different heat exchange systems, such as circular and noncircular ducts [6][7][8][9][10][11][12], flat PFHE [13][14][15][16][17][18], tube-fin heat exchanger [19][20][21][22][23][24][25][26][27], heat sink [28,29], electronic chip [30,31], and micro-and-mini channels [32]. However, in most studies gases were often used as the heat transfer medium, and studies of liquids are very low.…”

Heat transfer enhancement in a micro-channel cooling system using cylindrical vortex generators

“…They can take various forms such as protrusions, wings, inclined blocks, winglets, fins, and ribs [13,14], and have been used to enhance heat transfer in different geometries such as circular and noncircular ducts under turbulent flow [15][16][17]. They have also been used in laminar flow [18], with flat plate-fins in rectangular channels [19][20][21], tube heat exchangers [22], heat sinks [18,23] and rectangular narrow channels [24,25].…”