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March 3, 20260 citationsOpen Access

Addendum No. 3: Hybrid Aerodynamic Flow Control and Storm-Safe Logic for ALLFROMAIR® Atmospheric Water Harvesting through Electrodynamic Physisorption and Vibration-Induced Desorption

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VLVesa Olavi LiusVLVesa Olavi LiusVLVesa Olavi Lius

Key Points

  • To present improvements in the ALLFROMAIR® system for effective water harvesting using advanced airflow control and logic.
  • Developed a hybrid control strategy for airflow to enhance mass transfer.
  • Utilized an Intelligent Adaptive Control Unit to regulate air velocity.
  • Implemented pulse-width modulation to maintain dielectric stability under varying conditions.
  • Outlined storm-safe logic for structural protection during extreme weather.
  • Maximized the local mass transfer coefficient across the concentration boundary layer.
  • Ensured constant internal air velocity of 1.0 m/s using mechanical louvers and EC fans.
  • Enabled effective condensation from sub-saturated air via the Modified Kelvin-Thomson effect.
  • Reduced drag coefficient during adverse weather conditions through louvers' feathering position.

Abstract

This technical addendum (No. 3) introduces critical mechanical and algorithmic advancements for the ALLFROMAIR® system, specifically optimized for outdoor agricultural and industrial applications (Variant 2). The disclosure details a hybrid control strategy for airflow designed to maximize mass transfer across the concentration boundary layer (δc). By utilizing an Intelligent Adaptive Control Unit (IACU) to regulate internal air velocity at a constant 1. 0 m/s through the coordinated use of mechanical louvers and EC fans, the system ensures the boundary layer remains compressed. This optimization maximizes the local mass transfer coefficient (hₘ) in accordance with Fick’s laws. The integrated control logic manages the system as a field continuum, regulating the high-voltage DC module 1. 0–4. 0 kV to maximize the Modified Kelvin-Thomson (MKT) effect. This process lowers the chemical potential at the electrode surface to force condensation from sub-saturated air. To maintain dielectric stability, voltage is pulse-width modulated (PWM) to prevent Townsend avalanches according to Paschen’s Law as humidity or liquid accumulation increases. Furthermore, the document outlines "storm-safe" logic for extreme meteorological conditions, involving an instantaneous field collapse and the rotation of mechanical louvers to a 0° "feathering" position to minimize the drag coefficient (Cd) and protect the structural integrity of the micro-electrodes and chassis. This report serves as a formal defensive publication to establish prior art and ensure freedom to operate within the public domain.

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Cite This Study

Lius et al. (2026) studied this question.

synapsesocial.com/papers/69a67f06f353c071a6f0acd2https://doi.org/10.5281/zenodo.18824878
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