Evaluation of the Efficiency of the Office Building Systems’ Management Based on the Long-Term Monitoring Data

Abstract

Climate change and its consequences pose an existential threat to Europe and the world, where more than 75% of the European Union’s greenhouse gas emissions come from energy production. For this reason, it is very important to increase the energy efficiency of buildings, as the building sector is one of the biggest energy consumers with an impact on the still untapped potential for energy savings. Although buildings are constructed and certified as energy efficient, their in-use consumption is often significantly higher than expected. Especially significant in energy consumption between design and actual consumption are found in office buildings. The higher energy consumption is due to factors related to the design and operation phases. Researchers often emphasize the management of a building’s engineering systems as one of the key factors influencing a building’s energy consumption. The article analyses the existing office building and evaluates the efficiency of its energy using systems’ management based on long-term monitoring data. After identifying which systems are managed inefficiently, several management strategies have been proposed and evaluated. It was found that with simple management strategies heating energy reduction is about 20% per year.