Heat transfer—A review of 2005 literature

Two-phase mini-thermosyphon electronics cooling: Dynamic modeling, experimental validation and application to 2U servers

Experimental investigations and modeling of a loop thermosyphon for cooling with zero electrical consumption

Heat transfer of rectangular narrow channel with two opposite scale-roughened walls

A computational fluid dynamics model for simulation of a thermosyphon with two-phase flow including phase change heat transfer was developed. De-ionized water and CuO/Water nanofluid were used as working fluids in the thermosyphon. Results show that, maximum heat flux of the nanofluid is about 46 % higher than that of water. Also by increasing the nanofluid concentration, the wall temperature decreases, and the concentration of 1 wt% is the optimum concentration.

Thermal performance analysis of nanofluids in a thermosyphon heat pipe using CFD modeling

Thermal performance of plate-type loop thermosyphon at sub-atmospheric pressures

Heat transfer in a twin-blow narrow channel with two opposite walls roughened by skewed ribs arranged in staggered manner

Forced Heat Convection of Wavy Fin Channel

Detailed Nusselt number (Nu) distributions over six fin surfaces are presented for two sets of curved fin channels with twin- and single-flow exits that simulate flow passages in a cylindrical fin array for cooling of electronic chipsets. Each set of curved fin channels shares an identical cross-sectional shape with three different fin length (L)-to-hydraulic diameter (D) ratios of 22.5, 16.2 and 9.8. Influences of L/D ratio and exit condition on local Nu distributions over curve fin surfaces at Reynolds numbers (Re) of 500, 1,000, 1,200, 2,000, 4,000, 6,000, and 8,000 are examined. Spatially averaged Nusselt numbers () for two sets of tested channels are analyzed and compared that unravel the interactive impacts of L/D ratio and Re on heat transfer. In the present Re range, relative ratios between test channels with twin and single exits fall in the ranges of 0.97–1.08, 1.1–1.2, and 1.25–1.3 for L/D ratios of 22.5, 16.2, and 9.8, respectively. Heat transfer correlations for are generated using Re and L/D...

Detailed Heat Transfer Measurements of Curved Fin Channels

This experimental study measures the detailed heat transfer distributions over the wavy fin channel with twin flow exits that simulates an elongated flow passage in a fin array. Heat transfer results acquired from the wavy and flat fin channels are compared. Impacts of Reynolds number (Re) and the undulant surface on heat transfer distributions over the wavy fin surface in the Re range of 500-11000 are examined. The spatially averaged Nusselt numbers ( Nu ) over the flat and wavy fin surfaces are analyzed with the empirical Nu correlations derived. Within the Re range tested, the lack of traversing flow momentum over the undulant fin surface prohibits the overall heat transfer elevations from the flat fin levels. Increments of cooling power available from the wavy fin surface due to the surface enlargement only develop at the test conditions of Re>6000 for the present test configuration.

Kuei Feng Chiang

Papers

Thermal performance of plate-type loop thermosyphon at sub-atmospheric pressures

Heat transfer in a twin-blow narrow channel with two opposite walls roughened by skewed ribs arranged in staggered manner

Forced Heat Convection of Wavy Fin Channel

Detailed Heat Transfer Measurements of Curved Fin Channels

Forced Heat Convection of Wavy Fin Channel