Executive Summary
AQUA-R's primary water source is HVAC condensate — not a promise of fixed daily atmospheric water yield.
Primary Source
AQUA-R is built around HVAC condensate as its primary source: collection, filtration, monitoring, storage and controlled reuse. Atmospheric water generation appears only as an optional advanced R&D capability for selected climatic and operational applications — no fixed litres/day figure is promised.
Water Quality
Recovered water is initially non-potable / utility water, subject to application-specific treatment and certification. Drinking-water capability is not claimed unless separately certified.
This publication describes conceptual frameworks and proposed architectures. Where quantitative figures appear, they are engineering projections intended for planning and are subject to experimental validation.
Why This Matters
Condensate recovery is a well-understood mechanical process; treating it as a managed resource — rather than draining it — is a low-risk first step ahead of any more ambitious water strategy.
Glossary
References
References point to established engineering disciplines and public frameworks, not fabricated citations.
- General HVAC condensate-recovery engineering practice
- TransO2 AQUA-R architecture documentation
Suggested Citation
TransO2 Engineering Team. AQUA-R: Recovering HVAC Condensate as a Resource. Knowledge Centre Publication EN-105. TransO2. v1.0. 2025.
About TransO2
TransO2 is developing a modular Environmental Operating System for railway rolling stock — integrating air, thermal, energy, safety, water and digital intelligence. Engineering concepts and performance targets are subject to detailed design, testing, validation and certification.