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Interventions and Expected Results

Many interventions are to be done in Lund demonstrator. An in-depth feasibility study will be carried out as soon as the project starts. Then the interventions have to be communicated and in some cases negotiated with the Tenant’s Local Organization before they can be carried out. 

This is due to the fact that some interventions will raise the rent, which affects the private economy of the tenants. The pricing must be affordable for the tenants as LKF provides social housing.

  • Improved building envelope:

- Refurbishing of roof with new insulation

- Isolation of façades

- Adding hydrophobic layers on the concrete façade

- Glazed balconies: prevention of thermal bridges in balconies

- Replacement of windows and sheet metal parts.

  • Insulation of the base
  • Insulation of the ceilings and walls in basement
  • Moving the external panel wall to the outer edge of the balcony
  • Improving the air tightness of the building
  • Installing LED lighting
  • Photovoltaic (PV)
  • Replacement of ventilation to exhaust air heat pump or an FTX-system (either unique for each apartment or a centrally located unit for each building)
  • New culvert-system with local technical equipment
  • Water-saving equipment in each apartment.
  • Adjustment of heating systems.
  • Upgrade of steering system.
  • Review of the substations, heating systems and dimensions of ducts and pipes etc.
  • Individual metering and billing of hot and cold water.
  • Sewage Heat Exchanger.
  • Environmental classification of the buildings.
  • Improving the entire flow to and from the apartments, improving warm air recycling in ventilators,
  • Improve the efficiency of exhaust air heat pumps (F-vent.) and expand the existing system to each separate building.
  • Innovative change of insulation in the culvert in all of the buildings to avoid losses in the distribution system.
  • Innovative appliances such as washing machines in the laundry rooms connected directly to the district heating system.
  • Control and monitoring systems.
  • Individual meters for cold and warm tap water.
  • Local forecast steering (OTC).
  • New heat sources available will be make the District Heating system to be almost 100% based on renewable energy sources.
  • CHP plant. Renewable sources in a biofuel CHP in Örtofta north of Lund will be incorporated.
  • The integrated grid solution will adapt the grid to an increased number of small-scale PV-installations in the city. A map of the potential for PV in Lund to raise the interest for micro production.
  • Installed PV on the buildings in Linero.
  • One charging point for quick charges will be installed and monitored within the project.
  • Smart measuring equipment in the substations in Lund to monitor the quality of the electricity and to monitor the energy flows.
  • New ways to encourage the inhabitants save energy will be implemented. Partly by installing visualization tools for the tenants but also by enabling real time measuring of energy consumption Enhanced communication in the electrical grid through next generation PLC.

 

The interventions will be carried out progressively in stages. This enables a faster implementation of monitoring systems in the retrofitted apartments and buildings during the project.

Energy efficiency measures

  • Façade renovation
  • District heating (RES)
  • Photovoltaic integration
  • Combined heat and power facility
  • Smart grid
  • Monitoring platform

 

Expected Results

Expected results are:

  • Energy savings of approximately 46 kWh/m2/yr in the housing area of Eddan and Havamal, in total 1,862 MWh/yr. The reduction in CO2 emissions is expected to amount to 381 tons/yr.
  • The results will also be acquired knowledge, which will have a greater impact since LKF has a long term plan to refurbish all the housing stock from the sixties.
  • The energy saved through the smart grid/smart community solution will approximately reach 105 MWh/yr. Through visualization the potential for energy saving is approximately 5% and with automation and steering the potential has been calculated to up to 5%. The steering is primarily a way of shifting the energy consumption to one with a lower primary energy factor.

 

 

Demand Reduction

Reduction of CO2 Emissions

% of Demand Reduction

Retrofitting

1,862 MWh/year

144 tons/year

31%

District Heating

-

238 tons/year

-

Smart Grids

105 MWh/year

13 tons/year

10%

Photovoltaic

70 MWh/year

8.8 tons/year

-

Total

2,037 GWh/year

404 tons/year

N/A