Experimental investigation of heat transfer and friction factor in laminar, transition and turbulence region for water flow in mini-micro channels

Researchers recently conducted a comprehensive experimental analysis on water flow dynamics within circular mini-micro channels. By testing various hydraulic diameters ranging from 381 to 1000 micrometers, the team evaluated thermal performance and friction factors across laminar, transitional, and turbulent regimes under constant surface temperature conditions. The study utilized a high-precision setup to monitor temperature changes and pressure drops, ensuring accurate data collection for diverse flow rates. Findings indicate that while larger channels facilitate greater heat transfer, they also significantly influence the required pumping power. Specifically, the results highlight the trade-offs between thermal efficiency and pressure loss, providing a clearer understanding of how channel dimensions impact operational performance. These insights serve as a valuable reference for optimizing the design and efficiency of micro-scale cooling systems.

This study provides critical data for optimizing the design of micro-scale cooling systems, which are essential for the development of high-performance electronics and compact thermal management technologies.