Smart windows passively driven by greenhouse effect
Guillaume Boudan, Etienne Eustache, Patrick Garabedian, Riccardo, Messina, Philippe Ben-Abdallah

TL;DR
This paper presents a passive smart window system that uses greenhouse effect-driven thermochromic materials to reduce heat flux by 30% while maintaining visible light transmittance, enhancing building energy efficiency.
Contribution
Introduces a novel passive smart window design utilizing greenhouse effect to switch thermochromic materials between insulating and conducting states.
Findings
Reduces heat flux by 30% compared to traditional double glazing.
Maintains approximately 0.35 transmittance over 75% of visible spectrum.
Demonstrates effective passive thermal management in building applications.
Abstract
The rational thermal management of buildings is of major importance for the reduction of the overall primary energy consumption. Smart windows are promising systems which could save a significant part of this energy. Here we introduce a double glazing system made with a thermochromic metal-insulator transition material and a glass layer separated by an air gap which is able to switch from its insulating to its conducting phase thanks to the greenhouse effect occuring in the separation gap. We also show that this passive system can reduce the incoming heat flux by 30% in comparison with a traditional double glazing while maintaining the transmittance around 0.35 over 75% of visible spectrum.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsThermal Radiation and Cooling Technologies · Transition Metal Oxide Nanomaterials · Building Energy and Comfort Optimization
