Heat transfer and pressure drop characteristics of a flat plate manifold microchannel heat exchanger in counter flow configuration

Two-phase flow morphology and local wall temperatures in high-aspect-ratio manifold microchannels

“…The pressure drop can be significantly reduced at a given mass flux in this configuration due to the 5 decrease in channel flow length. Numerical studies have predicted, and experimental studies have verified, that the total heat removal in manifold microchannel heat sinks can be significantly enhanced compared to traditional heat sinks for a given pressure drop and chip temperature during single-phase operation [3][4][5][6].…”

“…This has been studied for singlephase operation where optimal channel heights balance the added heat transfer area with the decreased impingement effects with increasing channel depth. Many numerical studies have identified optimized geometries for both the fluid distribution manifold and the microchannel heat sink in single-phase operation [3,4,[9][10][11][12][13][14][15][16][17].…”

Characterization of hierarchical manifold microchannel heat sink arrays under simultaneous background and hotspot heating conditions

“…A number of numerical studies have identified optimized geometries for both the fluid distribution manifold and the microchannel heat sink in single-phase operation [10][11][12][13][14][15][16][17][18][19][20]. The optimal geometric and operational parameters depend on the desired heat flux removal and allowable pumping power, but these studies have shown that manifold microchannel heat sinks can increase heat dissipation without significantly increasing pressure drop compared to conventional microchannel heat sinks.…”

“…For example, Ryu et al [12] found that manifold microchannel heat sinks can remove over 50% more heat from a given area than a conventional microchannel heat sink at the same allowable pressure drop. Experimental studies have also shown that manifold microchannel heat sinks can dissipate high heat fluxes at moderate pressure drops [20,21,9]. However, due to the increased number of parallel flow paths in manifold microchannel heat sinks, flow maldistribution between channels, caused by uneven pressure drops in the manifold, can cause significant performance reduction.…”

3D CFD fluid flow and thermal analyses of a new design of plate heat exchanger

“…In addition, it was noticed that the geometry of the plates signifi cantly affects the fl uid fl ows through channels formed between the plates and highlights the performance of thermodynamic characteristics of these devices. The use of manifolding of microchannels for performance enhancement of plate heat exchangers in a counter fl ow confi guration was studied also by Andhare et al 15 . The heat transfer coeffi cient obtained in the numerical simulations was found to be approximately 16% higher than that in the experimental fi ndings.…”