Work

Thermal analysis of the novel throat-type micro-channel heat sink: Achieving minimal power consumption and maximal thermal performance

Year: 2025

Type: article

Abstract: This study numerically investigates, for the first time, the enhanced heat transfer and energy-saving performance of throat-type microchannel heat sinks (TMCSH). Unlike previous works that primarily focused on heat transfer improvement, this research introduces energy conservation efficiency as a new evaluation metric, enabling a joint analysis of thermal and energy-saving characteristics. By comparing with conventional straight-channel structures, the effects of throat opening size, throat length, and throat number on maximum temperature reduction, temperature control efficiency, and energy conservation efficiency are systematically analyzed. The results show that the optimal converging acceleration microchannel (CAM) configuration reduces the maximum temperature by 27 K and lowers energy consumption by 36.4 %. Furthermore, optimal nondimensional design ratios ( L c / D h = 0.30 and L t / L x2 = 0.1) are identified, and multi-throat configurations are shown to further enhance thermal management, achieving up to 80 % energy-saving efficiency. These findings provide new theoretical and practical guidance for designing energy-efficient microchannel heat sinks in high heat flux electronics cooling applications.

Source: International Journal of Heat and Fluid Flow

DOI: 10.1016/j.ijheatfluidflow.2025.110077

Authors: De-Xin Zhang, Lai-Shun Yang, Xiao Lu

Institution: Shandong University of Science and Technology

Language: English

Topic: Heat Transfer and Optimization

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,420