ENERGIANALYS AV FASTIGHETEN ANDERSLUND 12 : Energieffektiviseringsmöjlighet med solceller

Sammanfattning: Today's society is dependent on energy and the increasing use of energy affects the environment in a negative way. In Sweden, homes and premises account for 39% of total energy use. Achieving national environmental quality goals requires a reduction in energy use and the energy saving potential in the real estate sector is large. Energy use in buildings can be reduced by carrying out certain energy efficiency measures. Kårhuset by Mälardalen University was built in 1997 and it is a gathering place for students. The building is located on the campus area in Västerås and includes an office, restaurant kitchen, dining room, pub and meeting rooms for line associations. In this work, an energy survey has been carried out by the property Anderslund 12 (Kårhuset) to find out the current energy use and investigate the energy saving potential in the building.  The work's literature study analyzes previous research and similar case studies. Thereafter, the building's energy use has been simulated by IDA ICE by creating a basic model in the software using data from various authorities and site visits. The results of the basic model were then compared with simulations of various energy efficiency measures to evaluate the energy saving potential. The measures examined are window replacement, additional insulation of exterior walls and replacement of heat exchangers in the air handling units. As a complementary alternative, energy efficiency with solar cells on the roof was investigated. The conclusion is that the property's energy use exceeds the average of Swedish premises' energy use. In connection with a possible renovation, the building has good opportunities for more efficient energy use. By carrying out all the measures that have been proposed, the heating demand can be reduced by 39% and the energy supplied can be reduced from 156.9 kWh / m2, Atemp, year to 103 kWh / m2, Atemp, year. Complementary installation of solar cells is a profitable alternative for reducing the building's extremely high electricity consumption.