A Modular Desert Archipelago Architecture for Integrated Solar-Driven Water Production, Thermal Management, Agriculture, and Resource Recovery: A Concept Paper

Abstract

This concept paper presents a modular, distributed architecture for desert water production that integrates seawater feed, elevated solar-driven evaporation, enclosed vapor transport, underground condensation and storage, localized photovoltaic-powered cooling, vegetation-assisted thermal management, structural-shade agriculture, progressive brine concentration, and salt/resource recovery. The system is conceived as an artificial functional archipelago of physically separated units rather than as a single centralized plant. Each unit includes a raised, disc-shaped evaporation reservoir, photovoltaic generation, reflective vapor-transport piping, buried freshwater storage, vegetation above or around the underground reservoirs, and agricultural use of the shaded space beneath the elevated structure. The architecture is treated as a coupled water-energy-thermal-agricultural-resource-recovery system. Governing mass and energy balances are stated explicitly, with particular attention to the latent-heat demand associated with evaporation and condensation. Major geometric and operational parameters, including reservoir dimensions, elevation, vapor-outlet geometry, pipe dimensions, burial depth, cooling-node capacity, vegetation density, and unit spacing, are retained as experimentally adjustable variables. The work includes a staged prototype program, instrumentation requirements, environmental assessment criteria, seawater-transport energy considerations, water-quality constraints, a techno-economic framework, failure modes, and explicit falsifiability criteria. Novelty is claimed conservatively. The individual components are not presented as new. The proposed contribution lies in their particular spatial and functional integration: hot elevated evaporation is separated from cooler underground condensation and storage, while photovoltaic power, vegetation, shaded agriculture, brine concentration, resource recovery, and variable-geometry experimental optimization are incorporated within a distributed modular system. The concept is not presented as a proven desalination technology. All major mechanisms remain subject to modeling, prototyping, measurement, comparison with established technologies, and possible rejection or redesign on the basis of evidence.