ByggVesta

Some successful cooperations

"We would like to develop long-term cooperation with competitive and innovative contractors who share ByggVesta's vision of a sustainable society"

LARS GÄRDE
Director Supply Management Chain, ByggVesta

Green transport corridor through Europe

Another case of successful new thinking from ByggVesta, Praefa, Deutsche Bahn, Green Cargo and Schenker.

By thinking outside of the box, ByggVesta, Praefa, Deutsche Bahn, Green Cargo and Schenker have teamed up to create a green transport rail corridor through Europe, and they have cut material costs by 20% and halved the CO2 emissions as compared to conventional road transport by truck.

VoltAir System® – An Energy-Generating case from ByggVesta and Kraft & Kultur

Together with VoltAir System®, ByggVesta and Kraft & Kultur have created a unique construction concept where energy consumption has been slashed to 50% of the minimum stipulated by Boverket in new multi-household properties, with the same production cost as in conventional constructions.

" A brilliant example of what companies can do if they really get down to solving a problem. Another welcome example that Stockholm can become a good environmental role model thanks to entrepreneurs".

Ulla Hamilton, Environmental Commissioner, Stockholm

Background:

We are convinced that the people who live in our properties want to live as environmentally-friendly as possible, and that it is good to be able to have control over their energy expenses. It all depends how easy it is. Our properties are tailor-made to promote a lifestyle which has the least possible climate impact. We want to create the conditions for our tenants to take their own responsibility for the climate. It can be everything from proximity to public transport and providing the opportunity to monitor and control their own energy consumption. The bonus is a lower rent. ByggVesta's energy and construction concept which has resulted in the VoltAir System® heat exchange system is an energy-generating example of this. 

When Hammarby Sjöstad was being planned in the mid-1990s, challenging goals were set for energy consumption. These goals many thought were unrealistic and difficult to achieve, and would need complex and costly solutions. Today it is possible by a wide margin thanks to ByggVesta's and Kraft&Kultur's VoltAir System®. In 2008 ByggVesta could show off its first low energy property with a totally new way of combining construction and ventilation technology. Energy consumption was brought down to 65 kwh/m2 per year. Inspired by this success, 2008 saw the start of a dynamic collaboration between ByggVesta and Kraft & Kultur AB for the development of a whole new product series - the FTX aggregate for housing. This was the birth of the VoltAir System®.

Solution:

Using a new type of heat exchange, heat energy is recovered from the air leaving the building and is transferred to the air entering the building from outside. Thanks to the heat exchange, the apartments do not need any radiators and are just heated by the heat exchange. The actual heat exchange, a so-called FTX aggregate, consists of plastic sheets made of polycarbonate material. A robust, simple system with high efficiency levels and few moving parts. The basic technology has been around for over 20 years but the high efficiency has been achieved by advances in new materials. The air ducts are installed in a space-saving method up through the entry hall staircase and into each apartment. All the energy generated in the apartments is exchanged with the incoming air at an efficiency rate of 90 percent.

Results:

Using ByggVesta's new technology concept, energy consumption has been slashed from the building norm of 110 kwh per square meter to 55 kwh. Today Voltair's heat exchanges are becoming standard equipment in more and more newly built properties.

All apartments have individual meters for heating, power and hot water which also means that tenants can control their own housing costs.