Hydrodynamic rotary steam generators are fully autonomous and mobile when the drive is equipped with an internal combustion engine; reliability – the steam generator practically does not contain constructive elements which in the course of work are subject to wear and has a much bigger working life сompared to other types of steam generators; simplicity of service – due to a simple design and application of the knots calculated on long-term operation; all maintenance of the steam generator consists only in periodic control of a condition of the water filter and the control unit of the electric motor.