Surface generation of radiatively cooled building skin for desert climate

Dorit Aviv, Zherui Wang, Forrest Meggers, Aletheia Ida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A radiatively cooled translucent building skin is developed for desert climates, constructed out of pockets of high heat-capacity liquids. The liquids are contained by a wavelength-selective membrane enclosure, which is transmissive in the infrared range of electromagnetic radiation but reflective in the shortwave range, and therefore prevents overheating from solar radiation and at the same time allows for passive cooling through exposure of its thermal mass to the desert sky. To assess the relationship between the form and performance of this envelope design, we develop a feedback loop between computational simulations, analytical models, and physical tests. We conduct a series of simulations and bench-scale experiments to determine the thermal behavior of the proposed skin and its cooling potential. Several materials are considered for their thermal storage capacity. Hydrogel cast into membrane enclosures is tested in real climate conditions. Slurry phase change materials (PCM) are also considered for their additional heat storage capacity. Challenges of membrane welding patterns and nonuniform expansion of the membrane due to the weight of the enclosed liquid are examined in both digital simulations and physical experiments. A workflow is proposed between the radiation analysis based on climate data, the form- finding simulations of the elastic membrane under the liquid weight, and the thermal storage capacity of the overall skin.

Original languageEnglish (US)
Title of host publicationTechnical Papers, Keynote Conversations
EditorsBrian Slocum, Viola Ago, Shelby Doyle, Adam Marcus, Maria Yablonina, Matias del Campo
PublisherACADIA
Pages66-73
Number of pages8
ISBN (Electronic)9780578952130
StatePublished - 2020
Event40th Annual Conference of the Association for Computer Aided Design in Architecture: Distributed Proximities, ACADIA 2020 - Virtual, Online
Duration: Oct 24 2020Oct 30 2020

Publication series

NameProceedings of the 40th Annual Conference of the Association for Computer Aided Design in Architecture: Distributed Proximities, ACADIA 2020
Volume1

Conference

Conference40th Annual Conference of the Association for Computer Aided Design in Architecture: Distributed Proximities, ACADIA 2020
CityVirtual, Online
Period10/24/2010/30/20

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Hardware and Architecture

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