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Twisting Air Shaft Enhances Passive Cooling in Rammed Earth Residence

Author:
Nk3 Architects Nk3 Architects
Twisting Air Shaft Enhances Passive Cooling in Rammed Earth Residence
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The twisting air shaft captures cooling breezes while facilitating rainwater harvesting in a rammed earth residence designed for two young doctors serving their rural community.
5 key facts about this project
01
The design incorporates a two-storey twisting air shaft for enhanced ventilation.
02
Rammed earth construction promotes natural insulation and thermal stability.
03
Rainwater collection is integrated into the architecture for resource efficiency.
04
Large openings allow for ample natural light and airflow throughout the home.
05
The layout emphasizes community interaction while maintaining privacy for residents.

The COOLHOUSE is a residential design situated in rural India, addressing the issue of housing shortages as many young professionals leave their hometowns for urban jobs. Designed for a pair of young doctors, the building aims to create a comfortable living space that encourages a return to community life. Its modern approach is blended with elements from traditional Indian architecture, reflecting the local culture while meeting contemporary demands.

Design Concept

The design focuses on the unique challenges faced by rural communities, offering a fresh perspective on how homes can function in these environments. The wind tower plays a key role in this concept, providing passive cooling and maintaining air circulation. This element not only serves a practical purpose but also connects the structure to its architectural roots, reminding residents of their heritage.

Sustainability Features

Sustainability is at the heart of the COOLHOUSE. The wind tower contributes to passive cooling, which is crucial in hot areas like Sri Ganganagar and Jhansi. The design incorporates rainwater harvesting and the collection of morning dew, ensuring efficient water use. These features work together to create a dwelling that minimizes its environmental footprint while maximizing comfort.

Materials and Construction

The choice of materials reflects an emphasis on local resources. Rammed earth, clay bricks, and timber are carefully selected to create a building that is both practical and aesthetically pleasing. This selection aids in regulating temperature within the home, providing warmth in cooler months and coolness during the heat of summer. The materials ground the building in its rural setting, enhancing its connection to the landscape.

Interior Organization

The layout of the COOLHOUSE promotes both social interaction and personal privacy. Large windows allow for light and air to flow through, creating an open and inviting atmosphere. Essential amenities, like a small-scale gas cooking system and solar energy solutions, are integrated naturally into the spaces. A central rammed earth wall not only adds strength to the structure but also serves as an important design feature, linking the interior with its environment.

The wind tower extends upward, capturing breezes and directing them into the living spaces, improving comfort. Its design respects local traditions while also addressing the practical needs of modern living.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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Final registration deadline 30 October 2025

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