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Experimental investigation of chimney-enhanced natural convection in hexagonal honeycombs
2014
Theoretical and Applied Mechanics Letters
The natural convective heat transfer performance of an aluminum hexagonal honeycomb acting as a novel heat sink for LED cooling is experimentally investigated. The concept of adding an adiabatic square chimney extension for heat transfer enhancement is proposed, and the effects of chimney shape, height, and diameter are quantified. The average Nu av of a heated honeycomb with straight chimney is significantly higher than that without chimney, and the enhancement increases with increasing
doi:10.1063/2.1403205
fatcat:dqbm4dwblvdnxo6674pgu5qzem