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Active cooling device: A flexible, lab-scale experimental unit to develop spatio-temporal temperature control

Victor Oliveira Ferreira1, Wiebke Mainville1, Vincent Raymond2

  • 1Chemical engineering High-performance Analysis, Optimization and Simulation (CHAOS), Department of Chemical Engineering, Polytechnique Montréal, PO Box 6079, Stn Centre-Ville, Montréal, QC, Canada, H3C 3A7.

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Summary

This study presents a novel experimental unit for advanced thermal management using multi-input, multi-output impinging jets. The system offers precise temperature control for spatiotemporal distribution, validated by dynamic performance experiments.

Keywords:
Active coolingImpinging jetsProcess controlRaspberry PiThermal management

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Area of Science:

  • Engineering
  • Thermal Management
  • Fluid Dynamics

Background:

  • Precise temperature control is crucial for various applications, including electronics cooling and process engineering.
  • Existing thermal management systems often lack the flexibility for dynamic spatiotemporal temperature control.
  • Manifold-based impinging jet systems offer potential for targeted heat removal and precise thermal distribution.

Purpose of the Study:

  • To design and validate an experimental unit for multi-input, multi-output manifold thermal management.
  • To enable precise control over spatiotemporal temperature distribution using impinging coolant jets.
  • To provide a flexible and cost-effective platform for assessing custom temperature control strategies.

Main Methods:

  • Development of a multi-channel manifold for directing coolant fluid jets.
  • Implementation of a control system utilizing channel switching for input/output configuration.
  • Characterization of system dynamics through validation experiments, including flow rate step changes and PI control.
  • Utilizing Computer-Aided Design (CAD) files, custom PCB Gerber files, and a Python-based Graphical User Interface (GUI).

Main Results:

  • Demonstrated a temperature reduction of 6°C with a 54 L/min flow rate step change and a 400s settling time.
  • Achieved high reproducibility in setpoint tracking experiments using proportional-integral (PI) control.
  • Successfully maintained a 100°C setpoint under spatially varying heat loads, showcasing disturbance rejection capabilities.
  • The system offers a flexible design for lab-scale assessment of custom temperature control strategies.

Conclusions:

  • The proposed experimental unit effectively achieves precise spatiotemporal temperature control via manifold impinging jets.
  • The system's design facilitates flexible configuration and real-time performance tracking through an integrated GUI.
  • This cost-effective ($14,000 USD) active cooling device is suitable for research and development of advanced thermal management solutions.