Date of Award

3-2025

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Systems Engineering and Management

First Advisor

Eric G. Mbonimpa, PhD

Abstract

Atmospheric Water Generator (AWG) technology presents a promising solution for extracting and harvesting water from ambient air through condensation methods. This innovative approach offers a viable alternative for water production in regions with limited or unreliable water sources. AWGs operate most effectively in hot and humid environments, typically at temperatures of 80°F and relative humidity levels of 80%. As of 2020, the Department of Defense (DoD) has identified the Indo-Pacific region as a strategic focus for addressing future greatpower competition. Within the framework of Agile Combat Employment, this study evaluates the feasibility and performance of AWG technology at pre-determined locations across the region, assessing its potential use as hub-and-spoke water-harvesting supply points. Using daily water production data from a sampled vapor-compression cycle AWG rated at 15 gallons per day and 38 years of historical weather records from the Indo-Pacific region, a statistical regression model was developed to predict water yields at specified locations. The experiment determined that a linear regression model, with a square-root transformation to the response variable, was able to predict water harvest quantities, with a R2 value of 0.64, by utilizing relative humidity, temperature, and windspeed as predictor variables. The performance analysis considered key performance metrics such as reliability, resilience, and vulnerability, to evaluate the success and failure of the AWG system. Additionally, specific energy consumption and photovoltaic panel sizing were estimated to explore the possibility of integrating a stand-alone power supply for the compact AWG device. Results indicate that tropical and subtropical climates offer a more favorable environment for AWG operation, while arid and semi-arid zones struggle to meet average efficiency demands above a threshold of 30% when compared the manufacturer’s optimal capacity. Average device efficiencies ranged from 8.93% to 69.03% with significant influence due seasonal trends indicating spatial variability based on location and time of year. From the available regional solar exposure, photovoltaic panel size requirements ranged 1.67 m2 to 3.75 m2 to fully meet the demand of this device to produce optimal water harvest quantities. By assessing this specific AWG device and mapping its performance on a regional scale, this research shows the potential of AWG technology, particularly its ability to provide water supply for the DoD’s operational needs in the Indo-Pacific.

AFIT Designator

AFIT-ENV-MS-25-M-084

Comments

An embargo was observed for this posting.

Approved for Public Release, Distribution Unlimited. PA case number 88ABW-2025-0287

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