ByggVesta

ByggVesta’s Self-Heating Buildings are innovative and well-tested solutions which have been combined intelligently and put into mass production.

-We are using the vast experience we gained from building in Hammarby Sjöstad and in Västra Hamnen in Malmö, where we were able to demonstrate that it was possible to solve the cost issue by developing the methods and process without cutting corners on quality or the tenants’ apartment experience - and we do it all in a very climate-smart way.

A ByggVesta Self-Heating Building dramatically reduces energy consumption right down to 55 Kwh/m2 per year, which is less than half of the norm stipulated by the Swedish National Housing Agency for newly-built housing. Actually long-term sustainability is about much more than just heating.

This is why ByggVesta has developed a flexible prefabrication system which also reduces both on-site working hours and the environmental impact of transporting the materials. So the concrete elements of this building will be transported by rail to Västerås, resulting in a much lower impact on the climate than if the elements had been brought in the usual way by truck from a Swedish factory.

Studies carried out at our earlier projects have shown that living in a Self-Heating apartment halves the CO2 emissions compared to an average city apartment, by lower consumption and better energy habits.
 

house project

When ByggVesta arranged a packed press conference in order to present their new energy- and construction concept in the Kajutan area of Hammarby Sjöstad, the Environment and Traffic Commissioner Ulla Hamilton was one of the enthusiastic speakers.

- For this city to continue being a world leader in environment-friendly projects, companies have to come up with new solutions, she said.
ByggVesta’s new technology concept used in the 59 new apartments in Kajutan is such an example, slashing energy consumption from the norm of 110 kwh per square meter per year to 55.

Besides Ulla Hamilton, ByggVesta’s CEO Gunnar Nordfelt and Business Development Manager Marcus Svensson spoke about how unconventional thinking can result in energy-efficient apartments which makes the vision of sustainability become a reality without cutting corners on financing, design or quality. Johan Eriksson from Kraft & Kultur which developed the Voltair heat exchange told the audience about the lower installation- and running costs - and the exciting new materials which have improved efficiency to completely new levels.

SLASHING COSTS USING EXISTING TECHNOLOGY WITH NEW MATERIALS

ByggVesta’s concept in the Kajutan area is a Self-Heating Building with a well-insulated outer shell without any thermal bridges. The climate shell is based on a weatherproof and inert thermal frame, the latest generation of insulating windows and recycling energy using the ventilation system. All the energy generated in the apartments is heat-exchanged with incoming fresh air with 90% efficiency.

The actual heat exchange, Voltair’s FTX aggregate, consists of wafers of polycarbonate plastic material, and is a robust, simple, and highly efficient system thanks to the invention of this new polycarbonate material.

The air ducts are installed vertically up the stairwell and into each apartment in a space- efficient way.

The apartments do not need any radiators and are heated instead using the heat exchange with a small amount of additional heat from the district heating system. All the apartments have individual meters for heating, power and hot water. In this way the tenants can control their own housing costs.
 

environment sustainable development