Energiuppföljning i Swecohuset : Hur väl stämmer energiberäkningar från ursprunglig energisimulering överens med verkligt utfall?

Sammanfattning: After extension of the lease contract between Sweco and AMF Fastigheter concerning the head office Swecohuset in Marieberg, Stockholm a decision was made stating that the building would be fully renovated to accommodate all of Sweco’s employees in Stockholm under the same roof. After the renovation was complete the company wanted to certificate Sweco’s part of the property according to Miljöbyggnad level GOLD. To obtain the classification the company was required to perform an energy simulation of the property showing that the energy demand of the property in the future will be according to level GOLD of Miljöbyggnad. In this thesis, an energy follow-up on Sweco’s part of Swecohuset is performed to see howwell the results obtained from the initial energy simulation compare with the property inactual operation. The purpose of the project is to create an overview and a better picture of the property’s future energy demand. After a case study and analysis of Swecohuset’s operation and control system and technical components was performed, the calculation of the property’s energy demand was carried out and compared with the results from the initial energy simulation. Furthermore, the ratio between purchased energy and geothermal energy is calculated. The comparison between the initial energy simulation and the property’s actual energy demand shows that the property performs slightly better in real life. Estimation of a couple of factors were inaccurately made but through conscious decisions for other factors created a safety margin in case of any errors. Difficulties in estimation of several factors are common and the outcome of this work demonstrates the complexity of the work with energy simulations and the importance of correct input data for energy simulations to be a powerful tool for estimation of energy demand of a property.