A steam generator is a device that produces steam by heating water. It is commonly used in various applications, including power generation, heating systems, and industrial processes. The steam generated can be used to drive turbines, heat buildings, or facilitate chemical reactions. Steam generators can vary in design, but they typically consist of a heat exchanger, where heat is applied to water, converting it into steam. They are essential components in systems like nuclear power plants and steam locomotives, where efficient steam production is crucial for operation.