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Microalgae Bioreactor and ETFE Facade in Sustainable Desert Living

Authors:
Sanja Tiedemann, Shreeya Radia, Petros Ioannou
Microalgae Bioreactor and ETFE Facade in Sustainable Desert Living

Project in-detail

Integrating a microalgae bioreactor and an ETFE facade, this sustainable living space utilizes advanced materials and systems to effectively address water scarcity and energy efficiency in a desert environment.
5 key facts about this project
01
Incorporates a microalgae bioreactor for CO2 absorption and protein production.
02
Features an ETFE membrane facade that optimizes light transmission and insulation.
03
Utilizes a flexible layout that enhances community interaction while offering private retreats.
04
Integrates a rainwater harvesting system to address water scarcity in arid environments.
05
Employs an aluminum exoskeleton for rapid assembly and structural efficiency.

The Saguaro architectural project addresses the challenges posed by climate change within a desert environment. It is designed to serve as a sustainable living space that promotes resilience and adaptability in the face of extreme weather conditions. The project emphasizes a harmonious relationship between built and natural environments while prioritizing energy efficiency and resource conservation. Key elements feature innovative materials and systems aimed at reducing environmental impact and enhancing livability.

Design Innovations and Material Use

The project's fundamental design approach incorporates an exoskeleton crafted from lightweight aluminum, which ensures rapid assembly and structural integrity. This framework is complemented by a façade constructed from ETFE (Ethylene Tetrafluoroethylene) membrane. This material allows for high light transmission and effective insulation, optimizing energy use while creating a connection to the external environment. The dual properties of the ETFE façade enhance the building's thermal performance and adaptability to changing weather conditions.

A distinctive feature of Saguaro is the integration of a central column that serves both structural and functional purposes. This column houses essential utilities and offers a visually unified element that organizes the interior layout. It also facilitates passive energy strategies while providing spaces for rainwater collection, a critical component in desert regions where water scarcity is prevalent.

Furthermore, the incorporation of microalgae bioreactors marks a significant innovation within the project's design framework. These bioreactors act as both aesthetic and functional installations, contributing to air purification and creating a sustainable source of protein for occupants. This approach exemplifies a broader commitment to integrating natural systems within architectural design, demonstrating how sustainability can be harnessed through innovative technologies.

Sustainability-focused Systems

Saguaro employs multiple sustainability strategies that reflect an overarching goal of reducing ecological footprints. The project features a robust rainwater harvesting system, enabling effective utilization of natural resources. This system collects and stores rainwater for irrigation and domestic use, significantly lessening reliance on municipal supplies.

The incorporation of photovoltaic systems facilitates renewable energy generation, supporting the building's energy needs and further minimizing its environmental impact. Natural ventilation strategies are integral to the design, with strategically placed openings allowing for airflow that reduces the dependency on artificial climate control systems.

The spatial organization within Saguaro is also noteworthy, characterized by flexible layouts that facilitate multifunctional use. The design encourages community interaction while also providing personal retreats, a balance that is essential in modern living spaces.

The Saguaro project exemplifies a thoughtful integration of architecture and technology, with a focus on sustainable practices. To gain a deeper understanding of the architectural plans, sections, and design ideas, interested readers are encouraged to explore the project's detailed presentation for comprehensive insights into its innovative features and architectural considerations.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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