High‐performance and wide relative humidity passive evaporative cooling utilizing atmospheric water

Guang Wang; Yang Li; Huihe Qiu; He Yan; Yuke Zhou

doi:10.1002/dro2.32

journal article Open Access Nov 28, 2022

High‐performance and wide relative humidity passive evaporative cooling utilizing atmospheric water

Guang Wang

Yang Li

Huihe Qiu He Yan

Yuke Zhou

Droplet Vol. 2 No. 1 · Wiley

View at Publisher Save 10.1002/dro2.32

Abstract

AbstractGlobal warming and increased living standards have rapidly increased the demand for cooling systems. Meeting this demand in less economically developed areas is highly challenging due to a lack of electricity. In this paper, we have demonstrated a high‐performance and wide relative humidity (RH) solar‐driven evaporative cooling strategy that uses only atmospheric water. Developed here for the first time, we designed a metal–organic framework (MOF‐801) based composite with a high‐performance atmospheric water absorption across a wide range of RH. The as‐synthesized composite can adsorb atmospheric water up to ~22% (~80%) of its weight at an RH@28% (~70%). Our demonstration has shown that the corresponding cooling powers range from 136 to 344 W/m2 in a wide range of RH and solar intensities, and the passive cooling temperature is up to 14°C lower than the device's reference counterpart. Our study thus proposes a solar‐driven cooling coating with high cooling powers across a wide range of RH based on an as‐synthesized composite, which pinpoints a pathway to replace traditional compression‐based cooling systems (e.g., air conditioners) and which will also have a significant impact in future global energy consumption.

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Details

Published: Nov 28, 2022
Vol/Issue: 2(1)
License: View

Authors

G

Guang Wang

Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Hong Kong China

Y

Yang Li

Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Hong Kong China

H

Huihe Qiu

Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Hong Kong China

H

He Yan

Department of Chemistry The Hong Kong University of Science and Technology Hong Kong China

Y

Yuke Zhou

Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Hong Kong China

Cite This Article

Guang Wang, Yang Li, Huihe Qiu, et al. (2022). High‐performance and wide relative humidity passive evaporative cooling utilizing atmospheric water. Droplet, 2(1). https://doi.org/10.1002/dro2.32

High‐performance and wide relative humidity passive evaporative cooling utilizing atmospheric water

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