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Nano Research Energy 2024, 3: e9120107 https://doi.org/10.26599/NRE.2023.9120107
Review Article | Open Access | Issue | Published: 27 November 2023

Radiative-coupled evaporative cooling: Fundamentals, development, and applications

Show Author's Information Li Yu1,2,  Yimou Huang1,  Weihong Li2,  Changmin Shi3,  Brian W. Sheldon3,  Zhuo Chen1,  Meijie Chen1( )
School of Energy Science and Engineering, Central South University, Changsha 410083, China
Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
School of Engineering, Brown University, Providence, RI 02912, USA
Keywords:
evaporative cooling, mass transfer, thermal radiation, passive cooling, radiative cooling
Cite this article:
Yu L, Huang Y, Li W, et al. Radiative-coupled evaporative cooling: Fundamentals, development, and applications. Nano Research Energy, 2024, 3: e9120107. https://doi.org/10.26599/NRE.2023.9120107
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Abstract Full text About this article

As global energy demand continues to rise and climate change accelerates, the need for sustainable and energy-efficient cooling solutions has reached a critical level. Conventional air conditioning systems heavily rely on energy-intensive mechanical cooling, which significantly contributes to both electricity demand and greenhouse gas emissions. Passive cooling strategies, particularly radiative cooling (RC) and evaporative cooling (EC), present an alternative approach by harnessing natural processes for temperature regulation. While standalone RC can be affected by weather conditions and EC relies on water availability, Radiative-coupled EC (REC) offers a versatile and sustainable cooling solution suitable for various applications. Here we summarize an overview of the theoretical foundations and mathematical models of REC, encompassing REC by bulk water (REC-BW), REC by perspiration (REC-P), and REC by sorbed water (REC-SW). Moreover, we explore a range of applications, spanning from industrial processes to personal thermal management, and examine the advantages and challenges associated with each REC approach. The significance of REC lies in its potential to revolutionize cooling technology, reduce energy consumption, and minimize the environmental impact. REC-BW can conserve water resources in industrial cooling processes, while REC-P offers innovative solutions for wearable electronics and textiles. REC-SW’s adaptability makes it suitable for food preservation and future potable cooling devices. By addressing the challenges posed by REC, including water consumption, textile design, and optimization of bilayer structures, we can unlock the transformative potential of REC and contribute to sustainable cooling technologies in a warming world.


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About this article

Radiative-coupled evaporative cooling: Fundamentals, development, and applications

Show Author's information Li Yu1,2, Yimou Huang1, Weihong Li2, Changmin Shi3, Brian W. Sheldon3, Zhuo Chen1, Meijie Chen1( )
School of Energy Science and Engineering, Central South University, Changsha 410083, China
Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
School of Engineering, Brown University, Providence, RI 02912, USA

Abstract

As global energy demand continues to rise and climate change accelerates, the need for sustainable and energy-efficient cooling solutions has reached a critical level. Conventional air conditioning systems heavily rely on energy-intensive mechanical cooling, which significantly contributes to both electricity demand and greenhouse gas emissions. Passive cooling strategies, particularly radiative cooling (RC) and evaporative cooling (EC), present an alternative approach by harnessing natural processes for temperature regulation. While standalone RC can be affected by weather conditions and EC relies on water availability, Radiative-coupled EC (REC) offers a versatile and sustainable cooling solution suitable for various applications. Here we summarize an overview of the theoretical foundations and mathematical models of REC, encompassing REC by bulk water (REC-BW), REC by perspiration (REC-P), and REC by sorbed water (REC-SW). Moreover, we explore a range of applications, spanning from industrial processes to personal thermal management, and examine the advantages and challenges associated with each REC approach. The significance of REC lies in its potential to revolutionize cooling technology, reduce energy consumption, and minimize the environmental impact. REC-BW can conserve water resources in industrial cooling processes, while REC-P offers innovative solutions for wearable electronics and textiles. REC-SW’s adaptability makes it suitable for food preservation and future potable cooling devices. By addressing the challenges posed by REC, including water consumption, textile design, and optimization of bilayer structures, we can unlock the transformative potential of REC and contribute to sustainable cooling technologies in a warming world.

Keywords: evaporative cooling, mass transfer, thermal radiation, passive cooling, radiative cooling

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Received: 14 September 2023
Revised: 02 November 2023
Accepted: 08 November 2023
Published: 27 November 2023
Issue date: June 2024

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© The Author(s) 2024. Published by Tsinghua University Press.

Acknowledgements

Acknowledgements

This work was financially supported by the Natural Science Foundation of Hunan Province (No. 2021JJ40732) and the Central South University Innovation-Driven Research Program (No. 2023CXQD012).

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