👉 A thermotank is a device used to generate electrical energy from the heat of a flame or hot gas. It consists of an enclosed chamber with a heating element, a coolant, and a power source such as a generator or a transformer. The heat generated in the chamber is then converted into electricity through the use of transformers and other circuits. Thermotanks are commonly used in various applications such as automotive exhaust systems, industrial processes, and home automation systems.