Energieffektivisering och solenergi i en universitetsbyggnad
Undervisningshuset och Biblioteket i Uppsala
Akademiska hus is a real estate company that specializes in providing Swedish universities with housing facilities for educational and research purposes. The company strives to reduce its use of energy by 40% between the years 2000 and 2025. The aim of this thesis is to determine which measures can be taken to reduce the need of purchased energy in a building that is used by theSwedishUniversityof Agricultural Sciences inUppsala.In order to determine the results of various changes to the building envelope and ventilation system, the building was modelled in the computer simulation program VIP-Energy. Other proposed changes to make the use of energy more efficient concerned water use and lighting. The need of purchased energy can also be reduced by producing electricity or heat on site, using solar energy.Results show that economically viable measures include upgrading windows and faucets, adjusting control systems for ventilation and lighting, and installing roof mounted solar panels for power production. However, the investment in a photovoltaic system requires government grants in order to be profitable, and the system should be grid-connected to make it eligible for green certificates.Through these measures it is possible to reduce the need to purchase electricity for operational uses and energy for heating and cooling by 20%, from 99 kWh/m2,year to 79 kWh/m2,year. This corresponds to a 92 tonne decrease of annual carbon dioxide emissions from energy production and water purification. The total investment cost of 1 066 000 SEK results in a net present value of 883 000 SEK