The European Union's energy policy is strongly oriented towards decarbonization through the electrification of end-use energy consumption. Indoor swimming pools, as specialized buildings, are among the most energy-intensive facilities in terms of HVAC demand. This paper presents the energy renovation of a municipal swimming pool located in Florence (Italy), combining thermal insulation of the building envelope, fuel switch from gas to electricity, and installation of solar thermal and photovoltaic systems. A key design concept is an openable roof, which limits HVAC operation to the period from October to April. The indoor air system has been redesigned using micro-perforated ducts, and a relamping is also planned. The overall structural, architectural, and plant design has now been completed, and the intervention is expected to be financed through the "Sport e Periferie" call for proposals. For each intervention, this paper evaluates both the potential benefits and the implementation challenges, drawing on a comprehensive transient numerical model of the pool building and its associated HVAC. An energy-environmental assessment is presented, alongside a techno-economic analysis conducted as part of an energy audit. The final design represents the optimal compromise given operational and cost constraints, while enabling a significant reduction in CO2 emissions and atmospheric pollutants in a densely built-up urban area.
Malevolti et al. (Thu,) studied this question.