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High-Efficiency Thermal-Shock Resistance Enabled by Radiative Cooling and Latent Heat Storage.

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Summary

This study introduces a dual-function radiative cooling and latent heat storage device. It achieves efficient subambient cooling and superior thermal shock resistance, protecting objects from high temperatures.

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heat‐time transfer effectphase change materialsradiative coolingtemperature‐pinning effectthermal‐shock resistance

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Area of Science:

  • Materials Science
  • Thermal Engineering
  • Nanotechnology

Background:

  • Radiative cooling offers subambient temperatures but has limited thermal shock resistance.
  • High cooling power is crucial for protecting objects from sudden temperature increases.

Purpose of the Study:

  • To develop a dual-function cooler combining radiative cooling and latent heat storage.
  • To enhance thermal shock resistance and maintain stable low temperatures.

Main Methods:

  • Fabrication of a dual-function cooler using electrospinning and absorption-pressing.
  • Characterization of thermal performance under sunlight and thermal shock conditions.

Main Results:

  • Achieved a subambient temperature of 5.1°C.
  • Demonstrated a significant temperature drop of 39°C under thermal shock.
  • Phase change materials provided isothermal heat absorption for delayed preservation.

Conclusions:

  • The dual-function strategy effectively improves subambient cooling and thermal shock resistance.
  • This approach expands applications for radiative cooling and latent heat storage technologies.
  • Offers a robust solution against thermal accumulation and high-temperature damage.