In the past years, since many new data centers have been built, the overall electricity consumption of this kind of infrastructure has increased significantly. The share of electricity consumption on total electricity demand in Europe is supposed to pass from less than 4% in 2022 to more than 5% in 2026 [1]. According to IEA data centers in 2022 accounted for 0.6% of total GHG emissions and for 0.9% of energy-related GHG emissions [2]. A potential solution to boost the overall energy efficiency of data centers is Waste Heat Recovery and reutilization. The primary drivers of data centres electricity demand are the cooling systems and the servers themselves, with each typically accounting for 40% of the total consumption [1].