“Energy efficiency measures in the built environment - some aspects to consider in Sweden" by Mattias Gustafsson at the Faculty of Engineering and Sustainable Development
Location: Researchers corner
Date: Tuesday 20 November
The traditional energy system as we know it today will change in the future. There is a worldwide concern about the global warming situation and there are different actions implemented to limit the consequences from, mainly, the use of fossil fuels.
In this thesis, multi-unit apartment buildings have been simulated according to how the global CO2 emissions change when different energy efficiency measures are implemented. The simulated buildings have also been used to investigate how the calculated energy efficiency of a building according to Swedish building regulations varies depending on which technology for heating is used in the building and if the building has a solar PV installation or solar thermal system. When the energy efficiency of a building is calculated according to Swedish building regulations, this thesis shows that heat pumps are a favored technology compared to district heating. Another result is that electricity use/production within the investigated district heating system is the most important factor to consider when minimizing global CO2 emissions.
This thesis also investigates how the configuration of electric meters owned by the distribution system operator affects the monitored amount of self-consumed and produced excess electricity. Finally, four local low-voltage distribution networks were simulated when a future charging scenario of electric vehicles was implemented.
If a single-family house installs a solar PV installation, this thesis reveals that the configuration of the electric meter is important for the monitored amount of self-consumed electricity. This thesis also shows that the investigated low-voltage distribution networks can handle future power demand from electric vehicles and a high share of solar PV installations, but rural low-voltage distribution networks will need to be reinforced or rebuilt to manage the investigated future scenarios.