Every year, Earth Day, celebrated on April 22, presents us with an opportunity to contemplate the conditions of our planet and our impact upon it. Generating around 37% of global carbon emissions, the construction industry has an important, often detrimental, role to play, thus placing an increasingly urgent responsibility on architects and builders to devise strategies for reducing this number. Still, the built environment represents the habitat for most of humanity, and so it has the potential to protect and shelter people from the risks posed by the changing climate. Read on to discover a collection of articles delving into the strategies available at urban and architectural scales for mitigating the effects of climate change and minimizing the industry’s impact upon it.
The Vitra Design Museum presents 'Transform! Designing the Future of Energy', an exhibition running from March 23rd to September 1st, 2024. As energy stands as the cornerstone of modern society, the subject encompasses political, social, and environmental dimensions. The exhibition aims to highlight design’s role in the effort to transform the energy sector into a more efficient, reliable, and sustainable one, relying more on renewable sources, smart mobility systems, and moving towards self-sufficient cities.
The main role of architecture is to create structures that protect us from the environment and create spaces that are safe and comfortable for all types of needs and activities. By providing shelter, architecture also shapes the way people interact with their surroundings. Building technologies of the past rarely managed, however, to create a complete separation between us and the outside world.
While impermeability was a desired outcome, the porous building materials available always allowed some water, wind, or outside particles to leak into the interior spaces. In contrast, modern technologies now allow for almost completely impermeable building envelopes, allowing for complete separation between indoors and outdoors, thus relying on engineered systems to regulate temperature, airflow, or humidity. This article explores the differences between these two contrasting approaches, exploring how building facades are equipped to regulate indoor comfort and its environmental impact.
Rising demands for energy efficiency, technical functionality, and interior comfort in buildings necessitate the development of more efficient building envelope constructions. The building envelope serves as a mediator between a building's exterior and interior. In today's architectural landscape, it performs a multitude of functions to enhance the building's performance. These functions include building control systems, energy supply (such as gas and electricity), and heating, ventilation, and air conditioning (HVAC), among others. These elements primarily determine the functionality, efficiency, and safety of building spaces. Given that the nature of building envelopes heavily depends on these services, how can they serve as primary frameworks for building design development?
In an effort to find effective strategies to mitigate the adverse effects of climate change, the Biden-Harris administration has released a draft of a new legislative initiative that strives to impose a National Definition for Zero Emissions Buildings. Overseen by the U.S. Department of Energy (DOE), the draft proposes a standardized and verifiable base for defining the common minimum conditions for such buildings, as well as pathways for transparent verifications by public and private entities. DOE has now launched a ‘request for information' asking for feedback from industry, academia, research laboratories, and other stakeholders before finalizing the document.
Solar Facades on Bornholm Hospital. Image Courtesy of SolarLab
Environmental degradation has shed light on the need for new sources of energy. A shift in energy sources calls for innovative means of storing energy. For centuries, buildings have proven able to store people, objects, and systems, inviting a conversation about their untapped potential to efficiently store large amounts of energy. In this new era, can buildings go beyond being structures of function to potential reservoirs of power?
COP28, or the 2023 United Nations Conference of the Parties, was held in Dubai between November 30 and December 13. The annual meeting gathers representatives from 198 countries, as well as industry leaders to discuss and establish strategies to limit the extent of climate change and its adverse effects. The ultimate goal of these meetings is to find ways to limit the global temperature rise below 1.5 degrees Celsius compared to pre-industrial times. At the moment, the global temperature rise is already at 1.2 degrees Celsius. As the construction industry at large accounts for 39% of global emissions, architects and planners have a shared interest in the results of thee international summit, Read on to discover some of the key takeaways of COP28.
Bradbury Works / [Y/N] Studio. Image Courtesy of [Y/N] Studio
In the contemporary context, global warming has marked a turning point in the way we think about architecture. We are witnessing record temperatures on our planet and a challenging panorama in many large cities, characterized by heatwaves and, in some cases, more severe winters. These circumstances have triggered a cycle in which the demand for heating and cooling systems increases, which, in turn, translates into higher energy and operating costs for buildings.
Given this situation, it becomes imperative to design energy-efficient buildings to reduce both the environmental impact and the associated costs. One of the strategies to achieve this is to properly plan the facade, which, serving a function similar to the building's skin, can help reduce the energy required for heating and cooling. In this context, the polycarbonate panels developed by Rodeca contribute to the energy efficiency of buildings, in addition to their lightweight, slender construction, and translucent aesthetics.
https://www.archdaily.com/1009134/ecological-lightweight-and-slender-energy-efficient-architecture-with-translucent-polycarbonateEnrique Tovar
The world has just witnessed the hottest months in recorded history, and the outlook is far from optimistic. Rising temperatures are driving greater cooling demands, threatening to trigger a vicious cycle of higher electricity use and carbon emissions. In a planet simultaneously facing unprecedented urbanization and a climate crisis, the intersection of building energy efficiency and cooling technologies has never been more crucial.
How do we create buildings that use energy efficiently? Traditionally, efforts to green the built environment have centered on the physical infrastructure, often overlooking the relationships between people and space. The emergence of the technological era has ushered in "Smart Buildings." that employ machine learning and automation. These innovative structures are designed to operate with impressive energy efficiency, however, they are largely disconnected from their occupants. What if buildings could be made smarter and more sustainable by engaging with their occupants?
How can a building be more efficient? It is a concern that architects face on a daily basis, as they try to keep up with the demands of an industry that is increasingly aware of its environmental impact. Today more than ever, there is an effort to design buildings that integrate sustainability, efficiency and thermal comfort, which are fundamental pillars of a healthier built environment.
Having an effective solar control strategy is crucial to achieving a more efficient architecture. In addition to providing solar protection and economic savings, these strategies also carry benefits in terms of aesthetics, acoustics, thermal comfort, durability and maintenance.
Center for Computing and Data Sciences, Boston University / KPMB Architects + Suffolk. Image Courtesy of KPMB Architects
Decarbonization of the building sector is no longer a choice but a necessity. As nations strive to curb their greenhouse gas emissions by 2050, it is increasingly clear that current building standards do not go far enough to drive tangible change. Achieving climate goals requires economies to advocate measures that drive carbon neutrality while managing associated costs effectively. How would net-zero performance strategies impact building costs?
In the past, glazed surfaces tended to be small and almost opaque; but this began to change throughout the years due to the growing trend of increasingly larger glass panes in construction. Accompanied by thinner frames, they dilute the boundaries between the inside and the outside, and have become ubiquitous in modern buildings. In fact, it is increasingly rare to find a contemporary work of architecture that does not include the remarkable presence of glass: this material is present in the most diverse architectural scales, and its transparency provides harmonious integration with the surroundings and generous natural light for buildings. Traditional systems with frames are still predominant, but frameless glass facades are gaining ground in specific architectural projects, as they create perfect connections between the glass and the structure of the building, resulting in a singular aesthetic with soft and harmonious transitions. By eliminating heavy frames, a project's aesthetics can be enhanced while also improving the quality of life inside.
Energy efficiency wall renovation for energy saving. Exterior house wall heat insulation with mineral wool, building under construction. Image via Shutterstock / brizmaker
The buildings and construction sectors are key players in the fight against climate change –Combined, they are responsible for 30% of global final energy consumption and 27% of total energy sector CO2 emissions. Further, energy demand from buildings and construction continues to rise, driven by improved access to energy in developing countries, growing need for air conditioning, greater ownership and use of energy-consuming appliances, and a rapid growth in global floor area. Without targeted policy actions, the energy used in buildings could increase up to around 70% in 2050.
At the 18th International Architecture Exhibition of La Biennale di Venezia, the Pavilion of Slovenia set out to explore the theme of ecology and the paradoxical ways in which architecture relates to it. Instead of understanding it strictly through energy-efficient adaptations like heat pumps or recovery ventilation, the exhibition titled +/- 1 °C: In Search of a Well-Tempered Architecture aims to address the theme holistically. The Pavilion curators Jure Grohar, Eva Gusel, Maša Mertelj, Anja Vidic, Matic Vrabič, together with fifty European architects and creatives, researched and analyzed vernacular buildings from Europe to gain insight into the living example of intuitive adaptations.
Heating and cooling buildings have always been two of the most important challenges in ensuring indoor user comfort. At a biological level, our bodies generate heat through metabolism, a physicochemical process. And although the human body has temperature regulation mechanisms, such as sweating and vasodilation, sometimes we need additional help to achieve thermal comfort. Therefore, since ancient times, traditional strategies have been sought to help achieve this, and many have been adapted to their historical and material contexts.
https://www.archdaily.com/1001837/empowering-thermal-comfort-through-smartphone-technology-in-hvac-systemsEnrique Tovar
SNHU Innovation and Design Education Building / HGA. Image Courtesy of Cupa Pizarras
When designing architectural projects, protecting a building’s walls is key for ensuring its longevity, durability, and resistance to the elements, therefore preserving its aesthetic appeal. Among the protective measures available, cladding systems are exterior coverings that integrate varying textures, colors and finishes, allowing for customization and creative expression, while also providing weather resistance and thermal performance.
Exploring materials beyond traditional masonry cladding or commercial curtain wall systems, Cupa Pizarras has developed natural slate rainscreen facades. From linear to honeycomb patterns, these geometric facade layouts meet the requirements of current architectural trends, which demand more sustainable and energy-efficient buildings. The combination of high-durability tectonic slate with innovative fastening techniques, as well as the efficiency of rainscreen cladding, makes CUPACLAD a sustainable and aesthetically pleasing alternative for enhancing the LEED certification of projects.
Enhancing the energy performance of existing buildings through refurbishment processes provides the opportunity to create more comfortable and sustainable environments, while also improving their functionality, aesthetics, and safety. Architectural approaches to these renovations encompass various aspects of a building, including interior spaces, structure, internal systems, and facades.
When it comes to rethinking a building's envelope, STACBOND’s composite panel solutions delve into the development of ventilated facades. These facade systems serve as an architectural strategy for energy-efficient building renovations. Minimizing energy consumption for heating and cooling, the rehabilitation strategy incorporates thermal insulation, moisture management, and thermal mass optimization.
