Multifunction fabrics for new building and retrofitting
The purpose of the project is to develop technologies, which can optimize the thermal storage of concrete constructions. The concrete is being tested in full scale in EnergyFlexHouse at the institute of technology. Furthermore there will be constructed a measurement tool to document the energy savings in the buildings.
The aim is to develop new technologies for multifunction fabrics (structural core of a building) using concrete that not only comply with the traditional requirements for bearing capacity, stability and weather screen but also is an active part of the energy system of the building. This meets special demands for the aesthetic appearance with exposed concrete surfaces as well as challenges regarding the acoustics conditions. The building of Syddansk University - Kolding makes the fabric concept based on simple maintenance free solutions. The project will also develop concepts for retrofitting and a calculation tool to document potential energy savings in buildings
The project has focused on achieving a better utilization of the construction in a building in order to reduce the energy consumption for heating and cooling. The concrete constructions may have a load bearing primary purpose but it makes sense to also use the great thermal of the concrete for a better indoor climate less temperature fluctuations. The project has worked with optimization of the thermal mass and more accurate; the diurnal heat storage capacity of the constructions.
It has been documented in both simulations and laboratory test that a surface with and increased surface area – ie by grooves in the surface – with a factor 2 to 3 – will increase the diurnal heat storage capacity significantly. When utilized correctly this will reduce the amount of needed energy for heating and cooling. This result has had the effect that a great area of the new university building in Kolding has been built with bubble deck with an increased surface area.
In Danish building code it is demanded that an energy frame is calculated when designing new buildings. The diurnal heat storage capacity is a part of this calculation but is often just chosen as a value from a table. Often it is set high and not even calculated for the building at hand. Therefor an important result of the project is the online constructions of a given project and having the exact diurnal heat storage capacity calculated.
Using ifabrix.com will cause more precise energy calculations and compared to cases where the collective diurnal heat storage capacity was set to high it might cause a need for an energy design optimization and thus leading to a better result in the end and a lot of energy consumption saved in the years to come, for the future of building.
Key figures
Category
Participants
Partner | Subsidy | Auto financing |
---|---|---|
HENNING LARSEN ARCHITECTS A/S | 0,32 mio. DKK | 0,97 mio. DKK |
Consolis Spæncom A/S | 0,13 mio. DKK | 0,42 mio. DKK |
Teknologisk Institut | 1,23 mio. DKK | 1,85 mio. DKK |
UBST | 0,22 mio. DKK | 5,11 mio. DKK |
Aalborg Universitet (Fredrik Bajers Vej) | 0,66 mio. DKK | 0,17 mio. DKK |
Contact
Teknologisk Institut. Byggeri og Beton
Gregersensvej
DK-2630 Taastrup
www.teknologisk.dk
Hansen, Magne L.S. , 72200000, info@teknologsik.dk
Øvr. Partnere: Universitets- og Bygningsstyrelsen (UBST); Henning Larsen Architects A/S; Aalborg Universitet; Spæncom A/S