The Information and Communication Technologies (ICT) have a great potential to transform the field of engineering, and their use is increasingly widespread. In this context, the software (simulator) consists of three calculation modules: two of them focus on the simulation and evaluation of a shell-and-tube heat exchanger, and the third one centers on thermal-hydraulic design. The choice of the module to be used within the program depends on the user's needs. The freely accessible software allows teachers and students to adjust parameters, perform parametric sensitivity analyses, enabling a better understanding of the effects of variables involved in the equipment's performance. The software incorporates equations, graphs, and theoretical support for in-depth analysis of variables, as well as potential adjustments that can be made to meet the thermal-hydraulic requirements of the heat exchange unit. This makes it an educational tool that facilitates comprehensive analysis of the different variables involved. It aids in designing potential configurations for the required service of the shell-and-tube heat exchanger.