Cold Vapor Generation beyond the Input Solar Energy Limit

Haomin Song; Youhai Liu; Zhejun Liu; Matthew H. Singer; Chenyu Li; Alec R. Cheney; Dengxin Ji; Lyu Zhou; Nan Zhang; Xie Zeng; Zongmin Bei; Zongfu Yu; Suhua Jiang; Qiaoqiang Gan

doi:10.1002/advs.201800222

Cold Vapor Generation beyond the Input Solar Energy Limit

Haomin Song, Youhai Liu, Zhejun Liu, Matthew H. Singer, Chenyu Li, Alec R. Cheney, Dengxin Ji, Lyu Zhou, Nan Zhang, Xie Zeng, Zongmin Bei, Zongfu Yu, Suhua Jiang, Qiaoqiang Gan

Research output: Contribution to journal › Article › peer-review

246 Scopus citations

Abstract

100% efficiency is the ultimate goal for all energy harvesting and conversion applications. However, no energy conversion process is reported to reach this ideal limit before. Here, an example with near perfect energy conversion efficiency in the process of solar vapor generation below room temperature is reported. Remarkably, when the operational temperature of the system is below that of the surroundings (i.e., under low density solar illumination), the total vapor generation rate is higher than the upper limit that can be produced by the input solar energy because of extra energy taken from the warmer environment. Experimental results are provided to validate this intriguing strategy under 1 sun illumination. The best measured rate is ≈2.20 kg m−2 h−1 under 1 sun illumination, well beyond its corresponding upper limit of 1.68 kg m−2 h−1 and is even faster than the one reported by other systems under 2 sun illumination.

Original language	English (US)
Journal	Advanced Science
Volume	5
Issue number	8
DOIs	https://doi.org/10.1002/advs.201800222
State	Published - Aug 1 2018
Externally published	Yes

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10.1002/advs.201800222

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@article{a7c20702ea514b57ace75314e9ae238e,

title = "Cold Vapor Generation beyond the Input Solar Energy Limit",

abstract = "100% efficiency is the ultimate goal for all energy harvesting and conversion applications. However, no energy conversion process is reported to reach this ideal limit before. Here, an example with near perfect energy conversion efficiency in the process of solar vapor generation below room temperature is reported. Remarkably, when the operational temperature of the system is below that of the surroundings (i.e., under low density solar illumination), the total vapor generation rate is higher than the upper limit that can be produced by the input solar energy because of extra energy taken from the warmer environment. Experimental results are provided to validate this intriguing strategy under 1 sun illumination. The best measured rate is ≈2.20 kg m−2 h−1 under 1 sun illumination, well beyond its corresponding upper limit of 1.68 kg m−2 h−1 and is even faster than the one reported by other systems under 2 sun illumination.",

author = "Haomin Song and Youhai Liu and Zhejun Liu and Singer, {Matthew H.} and Chenyu Li and Cheney, {Alec R.} and Dengxin Ji and Lyu Zhou and Nan Zhang and Xie Zeng and Zongmin Bei and Zongfu Yu and Suhua Jiang and Qiaoqiang Gan",

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day = "1",

doi = "10.1002/advs.201800222",

language = "English (US)",

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journal = "Advanced Science",

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TY - JOUR

T1 - Cold Vapor Generation beyond the Input Solar Energy Limit

AU - Song, Haomin

AU - Liu, Youhai

AU - Liu, Zhejun

AU - Singer, Matthew H.

AU - Li, Chenyu

AU - Cheney, Alec R.

AU - Ji, Dengxin

AU - Zhou, Lyu

AU - Zhang, Nan

AU - Zeng, Xie

AU - Bei, Zongmin

AU - Yu, Zongfu

AU - Jiang, Suhua

AU - Gan, Qiaoqiang

N1 - Generated from Scopus record by KAUST IRTS on 2022-09-13

PY - 2018/8/1

Y1 - 2018/8/1

N2 - 100% efficiency is the ultimate goal for all energy harvesting and conversion applications. However, no energy conversion process is reported to reach this ideal limit before. Here, an example with near perfect energy conversion efficiency in the process of solar vapor generation below room temperature is reported. Remarkably, when the operational temperature of the system is below that of the surroundings (i.e., under low density solar illumination), the total vapor generation rate is higher than the upper limit that can be produced by the input solar energy because of extra energy taken from the warmer environment. Experimental results are provided to validate this intriguing strategy under 1 sun illumination. The best measured rate is ≈2.20 kg m−2 h−1 under 1 sun illumination, well beyond its corresponding upper limit of 1.68 kg m−2 h−1 and is even faster than the one reported by other systems under 2 sun illumination.

AB - 100% efficiency is the ultimate goal for all energy harvesting and conversion applications. However, no energy conversion process is reported to reach this ideal limit before. Here, an example with near perfect energy conversion efficiency in the process of solar vapor generation below room temperature is reported. Remarkably, when the operational temperature of the system is below that of the surroundings (i.e., under low density solar illumination), the total vapor generation rate is higher than the upper limit that can be produced by the input solar energy because of extra energy taken from the warmer environment. Experimental results are provided to validate this intriguing strategy under 1 sun illumination. The best measured rate is ≈2.20 kg m−2 h−1 under 1 sun illumination, well beyond its corresponding upper limit of 1.68 kg m−2 h−1 and is even faster than the one reported by other systems under 2 sun illumination.

UR - https://onlinelibrary.wiley.com/doi/10.1002/advs.201800222

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U2 - 10.1002/advs.201800222

DO - 10.1002/advs.201800222

M3 - Article

SN - 2198-3844

VL - 5

JO - Advanced Science

JF - Advanced Science

IS - 8

ER -

Cold Vapor Generation beyond the Input Solar Energy Limit

Abstract

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