Telescoping passive direct air capture system and device

The telescoping passive direct air capture device addresses the challenges of cost and fragility in existing systems by using a sorbent structure with coaxial ducts that efficiently captures and regenerates CO2, facilitating scalable and affordable air capture.

AU2024382463B2Pending Publication Date: 2026-07-09THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIV OF ARIZONA
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Patent Information

Authority / Receiving Office
AU · AU
Patent Type
Applications
Current Assignee / Owner
THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIV OF ARIZONA
Filing Date
2024-11-15
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Existing carbon dioxide collection systems are costly and fragile, making it difficult to implement air capture technology on a large scale due to the dilute nature of atmospheric CO2, which quickly overruns energy budgets.

Method used

A telescoping passive direct air capture device with a sorbent structure composed of coaxial ducts that can expand to capture CO2 and retract for regeneration, balancing resource efficiency and cost-effectiveness.

Benefits of technology

The device provides a large surface area for CO2 capture while minimizing energy consumption and manufacturing costs, enabling scalable and affordable air capture technology.

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Abstract

A device for passive atmospheric carbon dioxide collection comprises a vessel with an opening, a sorbent regeneration system, and a lid. Attached to the vessel is a sorbent structure featuring multiple coaxial ducts, each containing sorbent material and a central void along a shared axis. This structure transitions between a collection configuration-where the ducts extend through the vessel's opening, exposing the sorbent material to airflow for CO2 capture and a release configuration, where the ducts nest within each other inside the vessel, allowing the regeneration system to release the captured CO2, forming an enriched gas. An expansion mechanism facilitates movement between these configurations. The device may include features such as ducts made of sorbent material, permeable duct sections for airflow, directional vanes to enhance CO2 capture, and a microcontroller with sensors to optimize operation.
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