Bio-HNV: Bio-based Humidity-responsive Night Ventilation for climate resilience [A new generation of responsive building skin for passive cooling]

Pynirtzi, N; Debnath, KB; Scott, J; Davie, C; Bridgens, B

Bio-HNV: Bio-based Humidity-responsive Night Ventilation for climate resilience [A new generation of responsive building skin for passive cooling]

Pynirtzi, N Debnath, KB Scott, J Davie, C Bridgens, B

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Publisher:: PLEA
Publication Type:: Conference Proceeding
Citation:: Proceedings of 37th PLEA Conference, Sustainable Architecture and Urban Design, 2024, pp. 1273-1278
Issue Date:: 2024-06-28

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Field	Value	Language
dc.contributor.author	Pynirtzi, N
dc.contributor.author	Debnath, KB
dc.contributor.author	Scott, J
dc.contributor.author	Davie, C
dc.contributor.author	Bridgens, B
dc.contributor.editor	Widera, B
dc.contributor.editor	Rudnicka-Bogusz, M
dc.contributor.editor	Onyszkiewicz, J
dc.contributor.editor	Woźniczka, A
dc.date	2024-06-25
dc.date.accessioned	2024-07-19T09:23:46Z
dc.date.available	2024-07-19T09:23:46Z
dc.date.issued	2024-06-28
dc.identifier.citation	Proceedings of 37th PLEA Conference, Sustainable Architecture and Urban Design, 2024, pp. 1273-1278
dc.identifier.uri	http://hdl.handle.net/10453/179801
dc.description.abstract	Moisture-responsive bio-based materials, such as wood veneers, are abundant and have great potential to perform as breathable building systems due to their reversible shape change through continuous deflection under different wetting and drying conditions, enabling the building envelope to passively respond to the environment while avoiding the need for mechanical ventilation resulting in operational energy reduction. Wood has been used in buildings globally for centuries; however, it has not been used in its thin monolayer form, acting as a humidity-responsive structure within a passive night ventilation system. This study evaluates the moisture responsiveness and functionality of wood veneer structures as responsive systems with potential use in external building facades of South Asian megacities. Weather data from New Delhi, India, were collected and analysed to give the operational requirements for the material systems. The woven veneer structures were exposed between low (20%) and moderately high (70%) relative humidity in a climate chamber at a constant temperature 25℃. The results showed that larch woven veneers present significant, rapid, and reversible changes in deflection (6mm opening after 1 hour at 50% humidity). The outputs of this study will inform the development and integration of wood veneer systems within breathable wall constructions for night ventilation.
dc.language	en
dc.publisher	PLEA
dc.relation.ispartof	Proceedings of 37th PLEA Conference, Sustainable Architecture and Urban Design
dc.relation.ispartof	37th PLEA Conference 2024: (Re)thinking Resilience
dc.relation.ispartofseries	PLEA 2024: (RE)THINKING RESILIENCE
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.title	Bio-HNV: Bio-based Humidity-responsive Night Ventilation for climate resilience [A new generation of responsive building skin for passive cooling]
dc.type	Conference Proceeding
utslib.location.activity	Wrocław, Poland
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Design, Architecture and Building
pubs.organisational-group	University of Technology Sydney/Faculty of Design, Architecture and Building/School of Architecture
utslib.copyright.status	recently_added	*
pubs.consider-herdc	false
dc.date.updated	2024-07-19T09:23:40Z
pubs.finish-date	2024-06-28
pubs.publication-status	Published
pubs.start-date	2024-06-25

Abstract:

Moisture-responsive bio-based materials, such as wood veneers, are abundant and have great potential to perform as breathable building systems due to their reversible shape change through continuous deflection under different wetting and drying conditions, enabling the building envelope to passively respond to the environment while avoiding the need for mechanical ventilation resulting in operational energy reduction. Wood has been used in buildings globally for centuries; however, it has not been used in its thin monolayer form, acting as a humidity-responsive structure within a passive night ventilation system. This study evaluates the moisture responsiveness and functionality of wood veneer structures as responsive systems with potential use in external building facades of South Asian megacities. Weather data from New Delhi, India, were collected and analysed to give the operational requirements for the material systems. The woven veneer structures were exposed between low (20%) and moderately high (70%) relative humidity in a climate chamber at a constant temperature 25℃. The results showed that larch woven veneers present significant, rapid, and reversible changes in deflection (6mm opening after 1 hour at 50% humidity). The outputs of this study will inform the development and integration of wood veneer systems within breathable wall constructions for night ventilation.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/179801