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Harnessing Thermal Mass and Natural Ventilation for Energy Efficiency

Author:
Maria Englezou
Harnessing Thermal Mass and Natural Ventilation for Energy Efficiency
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Utilizing thermal mass and stack ventilation, the design optimizes energy efficiency while ensuring indoor comfort in a residence situated in the East Mediterranean climate.
5 key facts about this project
01
Integrates thermal mass with concrete and masonry for effective temperature control.
02
Utilizes stack ventilation to enhance natural airflow throughout the residence.
03
Features solar glazing for passive winter heating while minimizing summer heat gain.
04
Includes calculated shading devices to balance light and temperature year-round.
05
Places photovoltaic panels at a 50-degree angle for optimal energy collection.

"Form Follows the Sun" is located in the East Mediterranean Region and focuses on sustainability and energy efficiency. The design works with the local environment by using passive solar strategies. The aim is to create comfortable indoor spaces while minimizing energy consumption. By prioritizing natural resources, the building responds well to its specific climate.

Thermal Mass Integration

The building uses thermal mass through materials like concrete, masonry, and adobe. These materials absorb heat during the day and release it at night, maintaining stable temperatures inside. This reduces the need for heating or cooling systems. By optimizing the use of these materials, the design supports energy efficiency.

Natural Ventilation

Openings in the building are placed to promote natural ventilation. Lower openings bring in cool air from outside. Higher openings allow warm air to escape. This creates a stack effect that encourages airflow throughout the space. As a result, indoor comfort is improved without relying heavily on mechanical systems.

Solar Design Features

The design incorporates various solar strategies suitable for each season. Overhangs block excessive sunlight in the summer, helping to keep the interiors cooler. During winter, solar glazing allows sunlight to enter, providing passive heating. This thoughtful approach manages sunlight effectively, contributing to a more balanced environment.

Energy Generation

Photovoltaic panels are installed with a roof inclined at 50 degrees, enhancing energy autonomy. This angle captures solar energy efficiently, especially in winter. Additionally, shading devices are calculated to allow sunlight in during colder months while providing relief from heat in warmer months.

Careful consideration of sunlight and climate plays a strong role in the design. The interactions between space and environment reflect a commitment to both efficiency and comfort.

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

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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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