Building Efficiency Improvement and Renewable Energy Integration Project

The aim of this paper is to investigate and suggest efficient measures to improve energy performance of a building, belonging to the Ports of Stockholm. The building has a sufficiently large area of ca 31 000 m 2 and is intended to be used as a museum and archive storage with strict requirements to the indoor climate. Building modeling is limited due to the lack of input data, such as detailed construction drawings and materials, used in the building, operation and exact setting parameters of the buildings systems, activities of the tenants, energy consumption and energy prices. Suggested measures are evaluated in accordance to the annual energy and financial savings. Investments into the measures are evaluated and payback period is estimated, as well as life cycle cost for each suggested measure. Care is taken to estimate environmental impact for each case in connection with CO 2 emissions to the atmosphere, caused by production of the energy, utilized in the building. Second part of the project carries out modeling of the solar PV installation on the roof of the building to analyze electricity production by the installation and its compliance with the electricity demand of the building. Possibility of ground source heat pump implementation and solar thermal installation for domestic hot water production are investigated, modeled and evaluated in the project. The results obtained present several possible solutions for energy improvement of the building, depending on the building owner’s target and include windows replacement, indoor temperatures adjustment and installation of external shading, as well as lighting improvement. Suggested options are discussed in corresponding part of the paper. Conclusions and suggestions regarding future work are given.