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United States Department of Agriculture (USDA) 2021

ENERGY-EFFICIENT WATER VAPOR CONDENSATION TECHNOLOGIES FOR OVERCOMING DROUGHT MORTALITY OF JUVENILE TREES IN REFORESTATION PROJECTS.

Vapor Water Drought Trees

United States Department of Agriculture (USDA) National Institute of Food and Agriculture

Titre : ENERGY-EFFICIENT WATER VAPOR CONDENSATION TECHNOLOGIES FOR OVERCOMING DROUGHT MORTALITY OF JUVENILE TREES IN REFORESTATION PROJECTS.

Identification : 1027584

Pays : Etats Unis

Durée : START : 22 SEP 2021 TERM : 31 DEC 2024

Résumé
A common problem in reforestation of arid and semi-arid environments is high drought mortality of juvenile trees, particularly in early growth stages when tree root systems are still undeveloped. Successful reforestation under these conditions requires some form of limited irrigation to maintain juvenile trees alive until their root systems develop sufficiently to exploit deep soil water reserves. The low volumes of water required appear to be within the production capacity of small passive water vapor condensation devices. Two of these, marketed under the trademarks of Irripan and Groassis Waterboxx, have received considerable media publicity but are still relatively unknown in the Caribbean area and furthermore lack exposure in the peer-reviewed scientific literature. This project will determine minimum water requirements for survival of common tree species used for reforestation in the semi-arid Caribbean, and will test ability of the Groassis Waterboxx and the Irripan technologies to provide those amounts of water. Additional project objectives are to improve the design of vapor condensation devices leading to greater and more sustainable water yields, and to examine the feasability of upscaling these devices to the dimensions of a small hillside.

Objectifs
1. Determine minimum water requirement for survival of common tree species used for reforestation in Puerto Rico2. Evaluate effectiveness of commercially available Waterboxx dew condensers and IrriPan earth-water stills for enhancing treeseedling survival in semi-arid environments of Puerto Rico.3. Determine the effect of design modifications on short- and long- term water vapor condensation in box- and trench- type solarearth water stills4. Investigate the feasibility up upscaling solar earth-water distillation technologies for large sustainable water productionvolumes.

Performing Institution : UNIVERSITY OF PUERTO RICO AT MAYAGUEZ
Investigator : Snyder, VI, A.

Présentation : USDA (NIFA)

Page publiée le 1er décembre 2021