The first white paper in the field of ultra-low energy buildings in China has been officially released

Source: China Economic News Network

"Carbon" Search 2023, "White Paper on External Wall and Balcony Connection Systems of Ultra Low Energy Buildings" officially released

On July 2, 2023, Peck, a pioneer in the field of prefabricated buildings in Finland, officially released the first manual on the subdivision of ultra-low energy buildings in China, the "White Paper on Exterior Wall and Balcony Insulation Systems in Ultra Low Energy Buildings" (hereinafter referred to as the "White Paper"), aiming to provide best practices and technical guidance on how to design, construct, and maintain ultra-low energy exterior wall and balcony insulation systems, injecting new vitality and momentum into the development of ultra-low energy buildings, Created a new development opportunity for the industry.

With the increasing urgency of global climate change issues, "carbon neutrality" has become the key to addressing the challenges. The Chinese government is committed to achieving "carbon peaking" by 2030 and "carbon neutrality" by 2060, reducing carbon dioxide emissions and energy consumption in GDP by 80%. Based on this goal, the construction industry, as an industry with a huge impact on society, accounts for 40% of the global total energy use and 30% of the global total waste. It is urgent to promote and apply green and low-carbon construction technology to truly help achieve the goal of green carbon reduction. Under the overall goal of "dual carbon", Peck has written this "White Paper" with years of rich experience in the field of ultra-low energy buildings in Europe and China, sharing his own experience and technology with peers both inside and outside the industry.

The White Paper mainly covers the following content:

Definition of ultra-low energy buildings and their promotion history in China; Overview of relevant regulations and standards; Design principles and requirements for prefabricated sandwich insulation systems for exterior walls and balconies in China Europe; The advantages and specific applications of prefabricated sandwich insulation exterior walls; The advantages and specific applications of the balcony bridge breaking connection system; Sharing of actual cases at home and abroad.

Through this "White Paper", designers, engineers, architects, and building owners are helped to understand how to apply ultra-low energy building exterior wall and balcony insulation systems to ensure energy efficiency and sustainability of buildings. In addition, the "White Paper" also provides an experience and knowledge sharing platform for relevant industries to promote the development and promotion of ultra-low energy building technology and contribute to China's green carbon reduction goals.

In northern Europe, especially Finland, the winter climate is cold and harsh. In terms of energy, Finland's oil and natural gas resources are not abundant. How to strengthen building insulation and optimize energy utilization has always been a problem that we need to solve. In everything we do, sustainability is a part of the business industry. By reducing carbon emissions for ourselves and our customers, we truly contribute to the environment

Ultra low energy buildings consist of many different units and specialties, with the biggest challenge being the structural parts, especially prefabricated structures. The "White Paper on Insulation Systems for Exterior Walls and Balconies in Ultra Low Energy Buildings" mainly provides solutions for thick insulation and insulated balconies, while also introducing cutting-edge technology applications in the field of ultra-low energy buildings abroad. It is hoped that this white paper can provide inspiration for industry development

The goal of ultra-low energy consumption buildings is to reduce emissions, create a healthier indoor environment, and achieve lower operating costs within the building life cycle. In response to the requirements for the external enclosure structure of ultra-low energy consumption buildings, including regulations on external wall heat transfer, properties of external wall insulation materials, control of thermal bridge effect, roof insulation design, and overhanging balconies, etc. The White Paper provides a precise analysis of some currently mature and feasible solutions.

Exploring the Road of Demonstrating Ultra Low Energy Consumption Buildings - Prefabricated Sandwich Insulation External Walls

Prefabricated sandwich insulation exterior wall, which integrates the decorative layer, insulation layer, and structural layer during the manufacturing process. Compared to traditional cast-in-place construction, prefabricated sandwich insulated exterior walls greatly shorten the construction period, accelerate construction speed, reduce labor costs, and solve the durability problems faced by traditional cast-in-place external insulation. In sandwich insulation walls, the design of connectors is also crucial. They need to have low thermal conductivity, corrosion resistance, and an expansion coefficient similar to the wall to ensure excellent performance in insulation and durability. The Peck insulation connection system is a truss type stainless steel connection type, which effectively transfers the load of the outer blade plate to the main structure through diagonal web tension. The PD type connection is mainly used to provide customers with a sandwich wall panel insulation connection layout design scheme, suitable for insulation layers with a thickness of 40-390mm. This connection technology has 50 years of experience in use and is widely used in markets around the world. The technology is mature and reliable, and installation is convenient.

The application of prefabricated sandwich insulation exterior walls can meet the requirements of ultra-low energy consumption building construction in severe cold and cold regions. By introducing innovative construction techniques and material applications, the prefabricated sandwich insulation exterior wall system has achieved high-performance insulation, heat bridge insulation, and moisture-proof integration, providing a more energy-efficient, environmentally friendly, and sustainable development solution for the construction industry.

Deep "Carbon" Search for a Solution to Ultra Low Energy Consumption Buildings - Balcony Broken Bridge Connection System

In the context of building energy conservation, the importance of thermal bridges between balconies has become increasingly prominent. They can prevent the occurrence of adverse phenomena such as cold floors, condensation, and mold. Therefore, balcony structures need sufficient strength to withstand self weight loads and good insulation performance to cope with changing weather conditions. The use of a balcony bridge breaking connection system has become an effective way to solve the common hot bridge phenomenon on balconies.

The connection system technology developed by Peck specifically for cantilevered balconies not only provides structural stability, but also ensures that the overall external heat transfer meets the requirements of the specifications, improves indoor comfort and air quality, reduces energy consumption, and meets the performance requirements of architectural design for the connection. The cantilever balcony bridge breaking connection system provides greater freedom in architectural design, while maintaining the thermodynamic performance of the building, reducing energy consumption, and meeting the increasingly stringent requirements of Building code. The technical advantages of the balcony connection system make it an ideal choice for prefabricated and cast-in-place cantilever balconies, and also suitable for the eaves and walkway balconies of apartment buildings.

At the same time, the White Paper also shared practical cases of cutting-edge technologies in the field of low energy buildings both domestically and internationally, focusing on the relevant development experience of Shanghai, and summarizing the inspiration for promoting the sustainable development of ultra-low energy buildings in China.

The "dual carbon" goal drives energy transformation, and various industries are facing new challenges while also containing many opportunities. The White Paper released this time analyzes and summarizes China's promotion, practical experience, and development trends of ultra-low energy consumption, and extracts and shares cutting-edge technologies and applications in the field of low energy buildings both domestically and internationally.