Conference Paper
Proceedings of BSA Conference 2024: Sixth Conference of IBPSA-Italy
Economic and Environmental Optimization of Retrofitting Options for a Community Building: A Case Study from Förslöv-Grevie Parish, Sweden
Economic and Environmental Optimization of Retrofitting Options for a Community Building: A Case Study from Förslöv-Grevie Parish, Sweden
Azadeh Hana Hassanzadeh, Sepideh Rabie, Marko Ljubas, Henrik Davidsson, Dennis JohanssonDOI: https://doi.org/10.13124/9788860462022_17Abstract: The research evaluated retrofitting options for a threestory church community building in Grevie, Sweden, assessing the impacts on energy efficiency, life cycle cost, and environmental concerns. An energy model was generated in IDA ICE to simulate the building performance. Various improvements were tested in two separate retrofit package scenarios. They had the following measures in common: the addition of insulation to the walls and roof, the addition of sealant and secondary glazing, the installation of a heat pump with a better seasonal coefficient of performance (SCOP) on the ground floor, and the installation of a photovoltaic (PV) system. In the first scenario, modifying the controllers of electric radiators was considered while leaving other preexisting systems untouched. In the second scenario, all systems were replaced by two heat pumps, one for the ground floor and the second for the first floor, with improved SCOP. In the study, 1,620 different energy improvement cases with simultaneous 3,000 simulation combinations of PV systems were examined, using scripted and parametric optimization. Results suggest that adjusting controllers and adding PVs could yield significant energy savings and cost reductions. Notably, cases with an additional air-to-air heat pump on the first floor showed the best energy consumption reduction, though not the highest profitability. The research highlights the importance of combining passive and active measures and their impact on energy efficiency, life cycle costs, and environmental factors. It also shows that the most energy-efficient options may not always be the most cost-effective or environmentally friendly during a building’s lifetime. Pages: 125 - 132 Paper: