The aim of this Master’s Thesis is the design of an environmentally responsible renovation of the guesthouse. The thesis is divided into three parts.
The first part focuses on the architectural and structural design of the building at the level of documentation for a building permit. It includes the structural design, fire safety design, and assessment from the perspective of building physics. This part also contains an analysis of the current condition of the building, including a technical description and identification of the main deficiencies. Subsequently, a proposal of demolition works and construction modifications is developed with the aim of removing non-compliant structures. The main focus of this part is the design of a new architectural and layout solution that reflects current requirements for the operation of the guesthouse and the comfort of its guests.
The second part focuses on the concept of building services systems. It includes the design and assessment of the heat source and domestic hot water, rainwater management, cooling system, photovoltaic system and solar thermal collectors on the roof of the building, the design of mechanical ventilation, and the preparation of the Energy Performance Certificate of the building (EPC).
The third part assesses variants of renovation measures and evaluates the thermal performance of the building. Experimental thermographic imaging is used to identify thermal bridges and areas with increased heat losses in the building envelope. These findings are subsequently reflected in the theoretical assessment of structural and technical measures using energy calculations performed in simulation software. The variants include façade insulation, replacement of windows and doors, insulation of floor and ceiling structure, a change of the heat source, the use of renewable energy sources, and a comprehensive variant combining all measures. The variants are compared in terms of total delivered energy, primary energy consumption, the average thermal transmittance of the building envelope, energy demand, and transmission and ventilation heat losses. In terms of the ratio of investment costs to the achieved reduction in total delivered energy, the highest cost-effectiveness is achieved by the combination of façade insulation and replacement of windows and doors. The reduction in primary energy consumption is most significantly influenced by the change of the heat source and the installation of a photovoltaic system. The lowest cost-effectiveness is observed for the insulation of the floor and ceiling structure.