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Title: Potential for natural evaporation as a reliable renewable energy resource

Journal Article · · Nature Communications
ORCiD logo [1];  [2];  [3]; ORCiD logo [4]
  1. Columbia Univ., New York, NY (United States). Dept. of Chemical Engineering
  2. Columbia Univ., New York, NY (United States). Dept. of of Biological Sciences; City Univ. (CUNY), NY (United States). Graduate Center, Advanced Science Research Center (ASRC); City Univ. (CUNY), NY (United States). Dept. of Chemical Engineering
  3. Columbia Univ., New York, NY (United States). Dept. of of Earth and Environmental Engineering
  4. Columbia Univ., New York, NY (United States). Dept. of of Biological Sciences, and Dept. of Physics

About 50% of the solar energy absorbed at the Earth’s surface drives evaporation, fueling the water cycle that affects various renewable energy resources, such as wind and hydropower. Recent advances demonstrate our nascent ability to convert evaporation energy into work, yet there is little understanding about the potential of this resource. Here in this paper we study the energy available from natural evaporation to predict the potential of this ubiquitous resource. We find that natural evaporation from open water surfaces could provide power densities comparable to current wind and solar technologies while cutting evaporative water losses by nearly half. We estimate up to 325 GW of power is potentially available in the United States. Strikingly, water’s large heat capacity is sufficient to control power output by storing excess energy when demand is low, thus reducing intermittency and improving reliability. Our findings motivate the improvement of materials and devices that convert energy from evaporation.

Research Organization:
Columbia Univ., New York, NY (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
SC0007999; SC0014203
OSTI ID:
1425942
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 120 works
Citation information provided by
Web of Science

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Development and Evolution of the System Structure for Highly Efficient Solar Steam Generation from Zero to Three Dimensions journal September 2019
Plant‐Inspired Soft Bistable Structures Based on Hygroscopic Electrospun Nanofibers journal January 2020
Spore‐Based Water‐Resistant Water‐Responsive Actuators with High Power Density journal May 2019
Osmotic Pumping and Salt Rejection by Polyelectrolyte Hydrogel for Continuous Solar Desalination journal August 2019
Gel–Emulsion‐Templated Polymeric Aerogels for Water Treatment by Organic Liquid Removal and Solar Vapor Generation journal January 2020
One-step in situ synthesis of antimony sulfide/reduced graphene oxide composite as an absorber layer with enhanced photocurrent performances for solar cells journal March 2019
Solar-driven interfacial evaporation journal November 2018
Emerging hydrovoltaic technology journal December 2018
The influence of container geometry and thermal conductivity on evaporation of water at low pressures journal October 2018
Evaporation of nanoscale water on a uniformly complete wetting surface at different temperatures journal January 2018
Liquid flow-induced electricity in carbon nanomaterials journal January 2019
Blue energy harvesting on nanostructured carbon materials journal January 2018
A Janus evaporator with low tortuosity for long-term solar desalination journal January 2019
Solar evaporation for simultaneous steam and power generation journal January 2020
Force Spectroscopy and Beyond: Innovations and Opportunities journal December 2018


Figures / Tables (6)