A user seeks a simple Stirling engine design that operates at 80°C for a project related to sauna spas, expressing difficulty in creating their own design. They inquire about the feasibility of generating electricity from the heat produced in a sauna using either a Stirling engine or a thermoelectric generator (TEG). It is noted that Stirling engines require a temperature differential to function effectively, as they need a cooled chamber to avoid thermal equilibrium. The discussion highlights that a TEG also relies on a temperature difference to generate voltage, with examples of low-output projects provided. The user emphasizes the potential for harnessing wasted heat in sauna spas, which could improve energy efficiency.
