According to the climatic conditions of each region and its implantation environment, exterior enclosures play a fundamental role in providing the necessary climatization and ventilation conditions to make indoor spaces habitable and comfortable. While there are various bioclimatic strategies and designs that can be applied to achieve energy efficiency, the determination of materiality, the choice of hardware, and the definition of opening and closing technologies contribute to the performance of facades, providing functionality and a high degree of adaptability to contemporary uses, among other factors.
Ventilation: The Latest Architecture and News
Design for Health at the UIA World Congress of Architects 2023
The UIA World Congress of Architects 2023 is an invitation for architects from around the world to meet in Copenhagen July 2 – 6 to explore and communicate how architecture influences all 17 UN Sustainable Development Goals (SDGs). For more than two years, the Science Track and its international Scientific Committee have been analyzing the various ways in which architecture responds to the SDGs. The work has resulted in the formulation of six science panels: design for Climate Adaptation, design for Rethinking Resources, design for Resilient Communities, design for Health, design for Inclusivity, and design for Partnerships for Change. An international call for papers was sent out in 2022 and 296 of more than 750 submissions from 77 countries have been invited to present at the UIA World Congress of Architects 2023 in Copenhagen. ArchDaily is collaborating with the UIA to share articles pertaining to the six themes to prepare for the opening of the Congress.
In this fourth feature, we met with co-chairs of design for Health architect Arif Hasan, former Visiting Professor NED University Karachi and member of UNs Advisory Group on Forced Evictions, and architect Christian Benimana, Senior Principal and Co-Executive Director at MASS Design Group
Reimagining Air Conditioning: Traditional Cooling Methods for the Future
Traditional building solutions tend to work well in their respective contexts, as they have withstood hundreds of years of testing and improvements, and use techniques and materials available locally. Although globalization and the democratization of access to technology have brought more comfort and new opportunities to humanity, it has also led to the homogenization of solutions in the construction sector and a dependence on global supply chains for construction materials and components. This has also caused a rupture in how knowledge is passed on to new generations and, eventually, the disappearance of traditions.
In particular, the topic of passive cooling solutions for buildings is currently having a resurgence, with an effort to recover ancient techniques used throughout history in locations that have always had to deal with hot climates. This is even more evident due to the high energy costs imposed by artificial cooling, the global warming scenario, and mainly because, among the projections of population growth, a significant portion of megacities will be located in the predominantly hot climates of Africa and Asia. When we think about the future, is it possible to be inspired by the past and apply ancient cooling techniques to contemporary buildings?
What is a Traditional Windcatcher?
Before fossil-fuel powered air-conditioning became widely available, people living in harsh climates had nothing but natural means to ventilate their spaces and control the interior temperature. To do so, they took into account several external factors such as their location, orientation with respect to the sun and wind, their area's climate conditions, and local materials. In this article, we explore how ancient civilizations in Western Asia and North Africa have used windcatchers to adapt to the region's harsh climate and provide passive cooling solutions that are still being used in contemporary architecture, proving that local approaches to climate adaptability are fundamental to the development of today's built environment.
Houses in Guatemala: Shade and Ventilation in Tropical Architecture
"Here in the tropics, it's the shade not the stove that refreshes and brings people together," says Bruno Stagno about tropical architecture.
Guatemala ha estado construyendo su sombra a lo largo de los años. Nos encontramos con 3 ejemplos que proponen interesantes respuestas a este clima. Proyectos que materializan tanto grandes cubiertas con pendientes para dar sombra y evacuar el agua de lluvia con rapidez, como fachadas perforadas que permiten el ingreso de la brisa y la ventilación interior.
Natural Ventilation Solutions in Interior Design
When designing homes, architecture is constantly evolving and adapting to environmental conditions. Each climate has specific needs and requires different solutions in terms of comfort. Hot and humid environments require a very different design from cold and dry environments. Natural ventilation, for example, is very important in projects located in warm climates.
Back to Basics: Natural Ventilation and its Use in Different Contexts
Automation is everywhere around us - our homes, furniture, offices, cars, and even our clothing; we have become so accustomed to being surrounded by automated systems that we have forgotten what life was like without them. And while automation has noticeably improved the quality of interior spaces with solutions like purified air and temperature control, nothing compares to the natural cool breeze of mother nature.
But just like everything else in architecture, there is no one size fits all; what works in Tanzania cannot work in Switzerland or Colombia. This is due to several reasons, such as the difference in wind direction, average temperature, spatial needs, and environmental restrictions (or lack thereof). In this article, we take a look at natural ventilation in all its forms, and how architects have employed this passive solution in different contexts.
Natural Ventilation Isn't the Most Efficient Solution in All Cases
Ventilation serves two main purposes in a room: first, to remove pollutants and provide clean air; second, to meet the metabolic needs of the occupants, providing pleasant temperatures (weather permitting). It is well known that environments with inadequate ventilation can bring serious harm to the health of the occupants and, especially in hot climates, thermal discomfort. A Harvard University study demonstrated that in buildings with good ventilation and better air quality (with lower rates of carbon dioxide), occupants showed better performance of cognitive functions, faster responses to extreme situations, and better reasoning in strategic activities.
It is not difficult to see that ventilation plays a vital role in ensuring adequate air quality and thermal comfort in buildings. We have all felt it. But when we talk about ventilation, a light breeze from the window might come to mind, shifting through our hair and bringing a pleasant aroma and cooling temperature that brings fresh air and comfort. In mild climates, this experience can even be a reality on many days of the year. In harsh climates or polluted spaces, it could be quite different.
Houses with Side Patios: Bountiful Natural Light and Ventilation
Patios and gardens play a crucial role in a project's planning and layout. In some instances, they serve as organizing elements while in others, they improve the quality of life in a space by providing light, ventilation, and a connection to the outdoors while maintaining the privacy of the inhabitants.
Cross Ventilation, the Chimney Effect and Other Concepts of Natural Ventilation
Nothing is more rational than using the wind, a natural, free, renewable and healthy resource, to improve the thermal comfort of our projects. The awareness of the finiteness of the resources and the demand for the reduction in the energy consumption has removed air-conditioning systems as the protagonist of any project. Architects and engineers are turning to this more passive system to improve thermal comfort. It is evident that there are extreme climates in which there is no escape, or else the use of artificial systems, but in a large part of the terrestrial surface it is possible to provide a pleasant flow of air through the environments by means of passive systems, especially if the actions are considered during the project stage.
This is a highly complex theme, but we have approached some of the concepts exemplifying them with built projects. A series of ventilation systems can help in the projects: natural cross ventilation, natural induced ventilation, chimney effect and evaporative cooling, which combined with the correct use of constructive elements allows improvement in thermal comfort and decrease in energy consumption.
This Innovative Cooling Installation Fights Soaring Temperatures in New Delhi
This installation is a bespoke attempt to simplify and reinterpret the concept of air-conditioning, understanding that standardized solutions may not be universally applicable given the constraints of cost and surrounding environment. Using computational technologies, the team at Ant Studio has reinterpreted traditional evaporative cooling techniques to build a prototype of cylindrical clay cones, each with a custom design and size.
Custom Bamboo Skylight Illuminates the Interior of a Historic Building in China
In response to the overwhelming growth of cities and neighborhoods in China, architects from Atelier Archmixing’s Shanghai office, have developed a series of proposals that seek to return value to sensitive interior spaces and improve the user’s quality of life through design.
The project consists of an interesting light fixture; a bamboo structure similar in shape to an umbrella, that lets natural light and fresh air into the building.
NO ARCHITECTURE Emphasizes Urban Sustainability and Interaction with Alternative Residential Towers in China
One of the great ironies of modern urban life is the underlying disconnect that exists amongst us global citizens, despite living and functioning within such dense and close proximities. In order to address this issue in the context of China’s urban landscape, New York firm NO ARCHITECTURE has proposed two alternatives to the typical high-rise – two vertical residential typologies that feature a combination of courtyards, terraces, and gardens, and could be located in a wide variety of cities.
“Conceived around a series of cascading shared walls, ventilated courtyards, stepped terraces, and wind towers, these new vertical organizations re-connect urban living to nature, suggesting how we can live in close proximity today and can continue to do so sustainably for generations to come,” explained the architects.
New Book Calls for an End to Our Fetish for Conditioned Skyscrapers
Professor Alan Short of the University of Cambridge has published a book advocating for the revival of 19th-century architectural ideas to address the crippling energy use of modern skyscrapers. The Recovery of Natural Environments in Architecture proposes an end to the architectural fetish for glass, steel, and air conditioning, instead drawing inspiration from forgotten techniques in naturally ventilated buildings of the 1800s. The book is a culmination of 30 years’ research and design by Prof. Short and his colleagues at the University of Cambridge.