Electric machines and batteries are crucial components of modern technology, powering everything from smartphones to electric vehicles. However, they also present a potential fire hazard, particularly in the case of lithium-ion batteries which are widely used in many electronic devices. Nowadays, the study of the evolution of fires with the use of Fire Safety Engineering methods is going to be more and more important In Italy and in all the developed countries. To address this issue, researchers and engineers have been working to develop better fire prevention and suppression systems. Pyrosim is one such system, which uses computational modeling to simulate and analyze fires in enclosed spaces such as tunnels or buildings.