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Performance Study of Portable Semiconductor Refrigeration Device Based on CFD Simulation.

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Summary

A new portable air conditioner uses semiconductor (Peltier effect) cooling for personal comfort during high temperatures. This compact, 450g device achieves a cold air surface temperature of 13.9°C.

Keywords:
computational fluid dynamics simulationportable cooling devicesemiconductor refrigeration technology

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Area of Science:

  • Engineering
  • Thermodynamics
  • Materials Science

Background:

  • Global high ambient temperatures necessitate effective personal cooling solutions.
  • Existing portable refrigeration equipment faces challenges in cooling performance and miniaturization.
  • Semiconductor refrigeration, based on the Peltier effect, offers a potential solution for compact cooling devices.

Purpose of the Study:

  • To develop a compact, portable air conditioner for personal body cooling.
  • To evaluate the cooling performance and efficiency of a semiconductor refrigeration device.
  • To utilize 3D printing for miniaturization of portable cooling equipment.

Main Methods:

  • A portable air conditioner was designed using semiconductor refrigeration (Peltier effect) and a DC fan.
  • Structural components were manufactured using 3D printing for a compact design (450g total weight).
  • Computational fluid dynamics (CFD) simulations and infrared thermography were used to analyze performance.

Main Results:

  • The device achieved a cold air outlet speed of 8.24 m/s and a hot air outlet speed of 6.92 m/s at 20°C ambient temperature.
  • The cold air surface temperature stabilized at 13.9°C within 4 minutes.
  • The hot air surface temperature stabilized at 47.2°C.
  • CFD simulation results closely matched experimental measurements.

Conclusions:

  • The developed portable air conditioner effectively provides personal cooling using semiconductor refrigeration.
  • 3D printing enables a compact and lightweight design for the portable cooling device.
  • The device demonstrates promising performance for personal protection against high ambient temperatures.