Effect of fluid distribution along the channel length on the cooling performance of microchannel heat sink

Abstract

Purpose The purpose of this study is to conduct research on a new kind of division microchannel heat sink (D-MCHS), which can distribute cooling water along the channel-length direction. First, the pressure drops in the D-MCHS with different division region numbers were compared. Then, the cooling performance of the D-MCHS with different division region numbers was also comparatively investigated. Finally, the temperature distribution on the bottom surface of the D-MCHS was analyzed. Design/methodology/approach First, experiments were conducted to investigate the numerical calculation method. Then, a three-dimensional steady, single-phase, laminar flow and solid-fluid conjugate heat transfer numerical model was used to research the flow and heat transfer characteristics in microchannels. Findings The pressure drop in the D-MCHS could be reduced by increasing the number of divided flow regions along the channel-length direction. The bottom average temperature of the D-MCHS could be simultaneously affected by the number of divided flow regions and the water flow rate. The thermal uniformity performance of the D-MCHS could be improved by increasing the number of division flow regions. The number of low-temperature and high-temperature areas on the bottom surface of the D-MCHS is corresponding to the division flow region number. Originality/value The D-MCHS exhibited a positive effect on the pressure drop decrease and thermal uniformity improvement. It not only keeps the electronic module working in a secure temperature environment but also consumes less pump power for a lower pressure drop.

RETRACTED: Study of thermal characteristics of energy efficient micro channel heat sinks in advanced geometry structures and configurations: A review

“…Since then, tremendous work has gone into enhancing microchannel heat sinks' ability to remove the heat created by electronic chips. To maximize the surface available for heat transmission, several microchannel geometries such as circular, rectangular, triangular, and trapezoidal designs (Figure 1) have been used in the creation of microchannel heatsinks (Liu et al, 2022;Zhang et al, 2022). They also employed high-thermal-conductivity materials including copper, aluminum, and silicon to build the microchannel heatsinks (Figure 2) (Japar et al, 2018;Jennings and Smith, 2020;Shamsuddin et al, 2021).…”

Investigation of an improved cold plate design with circuitous minichannel: a computational study involving the effect of conjugate heat transfer

“…The results indicated a 180% reduction in pressure drop and a 13% increase in Nusselt number with a maximum performance evaluation criterion of 1.76. Zhang et al (2022) proposed a division microchannel heat sink which resulted in a reduced pressure drop due to distributed flow. Chen et al (2020) investigated a multi-parameter structure design of a parallel MCP.…”