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Developing bio-inspired ventilation to improve air quality in underground spaces

Designing filtration and ventilation systems inspired by living organisms for underground networks

Context

Bionnov intervened with the RATP group to find new ways to improve air quality in underground spaces subject to strong constraints: limited space, existing systems to integrate, acceptable maintenance levels.

 The mission was to identify biomimetic solutions to improve ventilation systems and passively capture the most critical pollutants (VOCs, fine particles).

Goals
  • Exploring biological models capable of filtering or capturing pollutants in closed environments

  • To propose innovative concepts for improving existing ventilation systems

  • Develop a roadmap to implement the selected strategies.

Key topics explored
  • Improvement of fan blade bearing surfaces (aerodynamic bio-inspiration)

  • Passive VOC and fine particle capture systems

  • Air filtration in enclosed and constrained environments

Customer

A major player in public transport

Gray pansy butterfly perched on green grass

Achievements

  • Targeting natural strategies to address air quality problems: biomimetic load-bearing surfaces for fan blades, natural pollutant capture systems

  • Ideation and pre-design of customized biomimetic solutions: proposing concepts and their integration into existing infrastructures

  • Estimating the added value of pre-concepts compared to the state of the art

  • Assessment of industrial relevance: feasibility, resources, time horizon, cost constraints and maintenance

Deliverables

  • A simple and ingenious concept to significantly improve the efficiency of existing ventilation systems

  • 1 disruptive pre-concept to solve the problem of the most critical pollutant

  • Proposal for a demonstrator project on the first concept and a feasibility study on the disruptive concept

Gray pansy butterfly perched on green grass

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