BUILDSMART Site Malmö
The city of Malmö participated in the BUILDSMART project with the construction of four different types of new buildings – a hotel, office and two residential buildings – with a focus on their sustainability. The buildings are located in two areas of the city – Malmö Live, in central Malmö, and in the south-east part of the city, known as Hyllie.
Malmö Live is a new concert, congress and hotel complex situated within walking distance from Malmö central station, between the old city centre and the new modern district of Western Harbour. BUILDSMART developed two of the associated buildings – the hotel and the residential part of the complex.
Klipporna, an office building, and the Roth Residential building are situated in the district of Hyllie, which is the largest growth area in the city, developed around a new railway station with connections to central Malmö and Copenhagen. The ambition of the city of Malmö is for the next phase of the Hyllie development to become an example of showing the way towards climate-neutral development.
*The KPIs for the new buildings are compared with the baseline of a reference building.
The four new buildings in Malmö have a combined gross floor area of 51 789 m². As a result of the energy efficiency, the total final energy consumption went from 138 kWh/m²/yr (national regulation) to 70 kWh/m²/yr, representing ca. 50 % decrease in comparison to the reference building.
This constitutes 3014 MWh/yr of final energy savings. According to the primary energy and CO2 factors provided by the project, the primary energy savings go up to 3366 MWh/yr while the CO2 reduction amounts to 2227 tonnes every year. Thanks to the integration of two innovative systems – deep green cooling and a geothermal plant with heat pumps – the demonstration buildings save an additional 43 and 382 tonnes respectively per year.
Low energy costs do not motivate users to make an extra effort and pursue energy savings.
The team organised training sessions on conscious environmental behaviour in energy consumption for the residents and the people working in the office building. It is important that this training is repeated, especially for new residents moving into the building.
These large-scale demonstration buildings are characterised by a number of innovative techniques such as energy-efficient building envelopes with high airtightness and low energy losses, energy-efficient installations resulting in minimised energy use, techniques for minimising cooling needs, e.g. efficient windows and shading equipment, close connections to the surrounding infrastructure, such as energy systems that optimise energy use and reduce peak loads for both heating and cooling, a waste management system created for maximum recycling and energy recovery, including treatment of the biological waste fraction. The technologies and interventions include:
Energy efficiency in buildings
- High-performance new buildings
- Low u-value windows
- Green roofs
- Energy-efficient white goods
- Automatic sun shading
- Building services (HVAC and lighting)
- Mechanical ventilation system with heat recovery
- Low-energy LED lighting
- Building integrated energy renewable sources
- Heat pumps
Energy systems integration
- Deep geothermal energy
- Deep green cooling: The BUILDSMART project has also integrated and demonstrated an innovative cooling technology based on geothermal energy. This system has a maximum cooling output of 133 kWh, using the relatively constant annual ground temperature of 10 to 12 °C to cool the building through 70 boreholes approximately 220 m deep. The pipes are part of a water-filled closed-loop system that supplies the building’s chilled beams and the air handling units via a heat exchanger. The system was designed to meet Klipporna’s entire cooling demands in the summer and pre-warms the outdoor air for the air handling units in the winter.
- Geothermal plant integrated with heat pumps to supply heating and cooling. The maximum heating output is 800 kW, the same as the cooling output.
- Wood waste will be used for biogas production at the local biogas plant
- Thermal collectors
- Thermal storage
- Ice storage, which will increase the cooling capacity needed for large events
- Smart electricity grid
- Building energy management system