Modelling and Experiment of a Commercial Atmospheric Water Generation (AWG) System Powered by Renewable Energy

Abstract

This research studies the performance of Atmospheric Water Generation-Vapor Compression Refrigeration system (AWG-VCRS) technology, specifically the commercial EW-1000 unit from AirWater Co., as a sustainable alternative to seawater desalination in addressing water scarcity in the Gulf Cooperation Countries (GCC). Conducted in Masdar City, Abu Dhabi, UAE, from July 2023 to January 2024, the study evaluated the EW-1000's continuous performance across different seasons. Key findings include the machine's ability to produce up to 927 L/day at relative humidity (RH) of 81% during the night in August, achieved with only one of the dual VCRS operational. With both systems running, it reached a peak production of 1500 L in September at an average specific power consumption (SPC) of 0.26 kWh/L. AWG's performance significantly decreases in cooler months by 71% due to its strong dependence on weather conditions. The system's efficiency, indicated by a coefficient of performance (COP) of 3.6, aligns with conventional air conditioners. A MATLAB Simscape model was developed for predicting condensation rates under varying atmospheric conditions, enhancing the understanding of AWG technology's potential under various environmental settings. These findings underscore the AWG technology's potential as a solution for enhancing water security in arid regions, like the UAE/GCC, complementing traditional desalination methods without the environmental drawback of brine production.

Date of Award	9 May 2024
Original language	American English
Supervisor	Matteo Chiesa (Supervisor)