Techno-economical analysis of different heat pump based solutions for the energy retrofit of an existing residential building

Nowadays climatic change and global warming are crucial topics discussed all over the world. The global need to reduce the emissions imposes the use of sustainable technologies, whom tend to reduce or eliminate the emissions. In building sector, precisely in heating of the buildings, different technologies like air-to-water heat pumps have been started to become more affordable and reliable. This particular technology operates using external air to produce heat, which is then exchanged with the internal environment thanks to radiators or fan coils. The main energy use in heat pumps is represented by electrical energy. Avoiding the consumption of additional fuel to produce heat, heat pumps are beeing installed in already existing buildings, substituting the boiler-based plants. The topic of this thesis is to evaluate the techno and economical aspects of the retrofit of an old building, using heat pumps to produce heat. Firstly, a simulation of the building is performed to evaluate the maximum power that the heat pumps must supply, secondly, an analysis of the diffent configurations is carried out.