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Closed Water Cycle and Aquaponics Integration in Sustainable Green Spaces

Author:
Yi-ting Tsai
Closed Water Cycle and Aquaponics Integration in Sustainable Green Spaces
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Utilizing a closed water cycle and integrated aquaponics, the design enhances sustainability while offering a multifunctional living space that responds to the challenges of water scarcity in Taiwan.
5 key facts about this project
01
Closed water cycle design minimizes resource wastage.
02
Integrated aquaponics system supports local food production.
03
Fish ponds enhance aesthetic and functional aspects.
04
Flexible furniture storage adapts to various activities.
05
Semi-outdoor stairs improve accessibility and connection to nature.

The design centered around A-Kung-Tien Reservoir in Kaohsiung, Taiwan, addresses critical water management challenges in the area. With the reservoir's decreasing capacity and resulting local water shortage, the approach combines aquaponics with innovative water storage systems. This strategy reflects a commitment to sustainable practices, aiming to use resources efficiently while minimizing waste.

Design Concept
Functionality is a key aspect of the design. Semi-outdoor stairs provide direct access to the bedroom, enhancing movement throughout the space. On either side of the structure, fish ponds play a dual role, contributing both aesthetics and function to the aquaponics system. Ladders offer practical access during rainy days, showcasing adaptability in the design.

Spatial Functionality
Flexibility is emphasized through the organization of spaces. Easily stored furniture like lazy bones and desk chairs allows for a variety of uses in the living areas. This focus on functionality helps support different activities while keeping the environment organized, ultimately improving the usability of the space.

Sustainable Features
The roof design has multiple purposes. It serves as a rainwater collection area and a platform for solar panels, enhancing energy efficiency. This is vital for addressing the resource constraints of the region. The closed water cycle directs water from the collecting area through the roof, vegetable area, and water storage, showing a commitment to ecological balance by reducing resource wastage.

Integrative Layout
The overall layout is thoughtful and well-structured. It includes essential elements like vertical walls, vent windows, a hidden staircase, and a header tank. An aquarium adds another layer, blending aquatic ecosystems with the living space while also acting as a visual centerpiece that connects the interior to the surrounding natural environment.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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