Where is the greatest potential for reducing carbon dioxide emissions and which building technologies make it possible to increase the energy efficiency of buildings.
The construction and operation of buildings are responsible for 39% of global CO2 emissions, of which 28% is from operational emissions and energy required for heating, cooling and power supply, and 11% is from the materials and structures manufacture.
In the EU only 25% of buildings are considered to be energy-efficient, and in Ukraine the share of such buildings is about 5%. Therefore, the greatest potential for reducing carbon emissions lies in increasing the energy efficiency of buildings, as well as reducing the use of fossil fuels in the manufacture of building materials.
The use of zero-energy building envelopes in combination with the use of technologies such as heat pumps, renewable heat and electricity sources is the best way to create energy-independent buildings and achieve climate neutrality.
Rauta offers energy-efficient technologies using Ruukki products to create energy-efficient buildings.
Thanks to the special configuration of the joints and the presence of EPDM sealant in the sandwich panel joint, it is possible to achieve maximum air-tightness of the structures q50≤1 m3/(m2h) and a reduction in energy consumption of up to -20% compared to average panels.
Highly efficient envelope structures made of Ruukki sandwich panels not only reduce overall carbon dioxide emissions and operating costs, but also provide better comfort for people, increase the company image and the value of the building.
The use of increased energy efficiency Ruukki sandwich panels with special accessories and additional joint sealing allows to reduce the building energy consumption by up to -30%.
In 2023 Ruukki became the first company in the world to start manufacturing sandwich panels and claddings for ventilated facades of fossil-free steel, which uses hydrogen, electricity and biogas instead of fossil fuels. The residual product of this production process is not carbon dioxide, but water.
For facades and roofs that will be operating in conditions of increased corrosion aggressiveness, Ruukki offers special Hiarc and Pural coatings that provide excellent resistance to ultraviolet radiation, have increased resistance to dirt and scratches, and are also able to reduce the heating temperature of the surface of the envelope structures.
Under the same conditions, energy-reflecting coatings heat up 23% less than conventional ones. This allows to further reduce the amount of energy required for heating or cooling the premises.
Rauta solution is a solar power plant on the roof of a building, which includes an envelope structure made of Ruukki roof sandwich panels and modern monocrystalline solar panels with a set of special fasteners.
Currently, the payback period for investments in RoofSolar for commercial buildings is 3.5-4 years.
Today, construction craftsmanship is measured not by tons of concrete and steel, but by how little the buildings construction and operation affect the environment. Improving construction technologies and using more energy-efficient materials and structures are the most important steps for developers to save the planet.
