HOSTED BY VOLVO CONSTRUCTION EQUIPMENT
Dutch researchers develop 2nd Skin Façade system as low carbon upgrade for buildings
A zero-energy refurbishment solution for retrofitting residential apartment buildings by applying has been developed by Dutch researchers at TU Delft university.
The concept is an integrated, prefabricated and lightweight building envelope that acts as a building’s second skin. With this low-carbon solution, existing buildings can be easily upgraded and meet eco-friendly building requirements.
The solution been developed under Building Technology Accelerator programme of the European Institute of Innovation & Technology’s (EIT) Climate-KIC project.
The “2ndSkin” project brings together different stakeholders of the building industry, aiming at integrating their expertise and objectives into an innovative building retrofitting concept that achieves zero energy use of a dwelling, while offering up-scaling possibilities.
The focus of the 2ndSkin project is the low-rise, multi-family residential buildings, accessed by separate stairwells per 6-8 apartments. This type of building represents about 300 000 houses.
Nevertheless, the concept of the renovation can be applicable in apartment blocks of other than the post-war period, increasing significantly the impact of the solution with a potential target of 875.000 apartment blocks in the Netherlands.
Existing buildings can easily be upgraded at a low cost by adding a second skin to their façade. When retrofitting the building, tenants will not have to relocate during construction activities. The envelope is easily installed within a short period of time.
By renovating existing building stock such as multi-family postwar buildings, energy consumption and CO2 emissions can be reduced significantly.
To meet the requirement of zero-energy consumption, the solution consists of three basic elements:
Increase the thermal resistance of the building envelope, including walls, windows and roof, installing heat recovery ventilation, to reduce energy demand for heating while providing adequate indoor air quality (IAQ), and use photovoltaic (PV) panels to generate energy.
The key advantages are:
A simple payback analysis, balancing only the initial investment required for the renovation against the potential energy savings resulting from it, shows that a complete 2ndSkin renovation would have a payback time of just over 25 years, or a simple average rate of return of 4% per year.
The overall solution can, hence, be an answer to the need for upgrade the building stock to provide comfort and low energy demand, with minimum occupants disturbance. The construction system is based on prefabrication, maintaining still some degree of flexibility, such as different type and size of windows or different cladding material. In this way, the concept aims at higher acceptability and, thus, applicability.
Gigantic Tunisian solar project could power 5 million EU homes
The construction of a gigantic solar power plant on the edge of the Sahara desert is being planned by a consortium of clean energy developers. It will be linked to Europe by undersea cables and could…
Storm and flood resistant buildings designed with bamboo at the core
The rainforests of Vietnam are very prone to reoccurring storms and floods. Architects are reverting to bamboo combined with modern design techniques to create resilient and sustainable structures able to withstand the harsh climate. The buildings…
IEA study unveils key role of trucks in global oil-demand growth
Improving the efficiency of road-freight transport is critical to reducing the growth in oil demand, carbon emissions and air pollution over the next decades, according to the International Energy Agency’s latest report, The Future of Trucks: Implications…
London Environment Strategy for greener city launched by Mayor
An innovative strategy to turn London into a more eco-friendly city has been launched by London Mayor Sadiq Khan. The Strategy which would be suppored by a ‘Greener City Fund’ has received the backing of the…