Magnetohydrodynamic Microchannel Cooling for Thermal Gradients
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Solution Overview
Problem
Existing cooling systems for electronic devices often fail to provide adequate cooling where and when it is most needed due to constant fluid flow distribution, which does not account for temporal and spatial thermal variations in heat-producing components.
Innovation Solution
A cooling system with a base having multiple cells with microchannel passages, each independently cooled by a magnetohydrodynamic pump system, allowing for variable flow rates controlled by a discrete time, multiple input, multiple output controller based on temperature sensors to optimize cooling capacity across different regions of a heat-producing component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If constant fluid flow is delivered to all surfaces, then cooling coverage is uniform, but cooling efficiency decreases due to inability to address temporal and spatial thermal variations
Solution Approach 1:
The cooling device is divided into multiple independently controllable channels, each serving a specific region of the heat-producing component. This segmentation allows each channel to be controlled independently based on the thermal requirements of its corresponding region, enabling the system to address spatial thermal variations effectively.
Solution Approach 2:
The system dynamically adjusts fluid flow rates in each channel based on real-time temperature measurements and thermal conditions. This dynamic control allows the cooling system to adapt to temporal thermal variations, delivering more cooling capacity when and where it is most needed, rather than maintaining constant uniform flow.
2Measurement precision
If multiple independent pump systems are used for each cell, then cooling control precision improves, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical pump systems with magnetohydrodynamic (MHD) pumps, which use magnetic fields to drive fluid flow. This substitution eliminates moving parts in the pump mechanism, reducing mechanical complexity while enabling precise flow control through electromagnetic actuation. The MHD pumps can be controlled independently for each channel, providing the needed flow rate precision without the complexity of multiple mechanical pump assemblies.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables targeted and efficient cooling by adjusting flow rates in each cell independently, improving thermal management and reducing thermal gradients, thereby enhancing the reliability and performance of electronic devices.
Implementation Method 1
The pump system may include a plurality of magnetohydrodynamic pumps
Implementation Method 2
fluid is directed through a multitude of small channels in proximity with a heat producing component
Data Source
AI summary
A cooling system for a heat producing component includes a base having two or more cells. The cells may include microchannel passages. A pump system may be coupled to the base. The pump system may circulate fluid independently in each of two or more of the cells. The pump system may include an array of two more magnetohydrodynamic pumps. Each magnetohydrodynamic pump may provide fluid to a different cell. A controller may control a flow rate in each one of cell of the cooling system independently one or more of other cells of the cooling system.