Can Thermal Nonreciprocity Help Radiative Cooling?
2024
Can Thermal Nonreciprocity Help Radiative Cooling?
Commentary
Author Information
Author(s): Run Hu, Chen Zihe, Kim Sun-Kyung
Primary Institution: Huazhong University of Science and Technology
Hypothesis
Can nonreciprocal radiative cooling improve the performance of radiative cooling technologies?
Conclusion
The potential benefits of nonreciprocal radiative cooling are limited by energy conservation and the constraints of Kirchhoff's law.
Supporting Evidence
- Radiative cooling has made progress but is limited by Kirchhoff's law.
- Breaking Kirchhoff's law could allow for better control of thermal radiation.
- Directional thermal radiation may be a better alternative to enhance radiative cooling performance.
Takeaway
This study talks about how trying to make radiative cooling work better by breaking some rules might not actually help much because of energy limits.
Limitations
The commentary discusses the theoretical limits of nonreciprocal radiative cooling and the challenges in practical implementation.
Digital Object Identifier (DOI)
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