Heat mechanical and ancillary equipment of power plants Consider the appointment, design, operating principles, methods of controlling performance and pump units of the circuit, draft machines and ash collectors, as well as issues related to hydraulic engineering and calculations. Particular attention is paid to the characteristics, structures and the principle of centrifugal and axial pumps, exhaust fans, blowers, scrubbers and battery cyclones, as well as the methods of calculation parameters and the process of formation of cavitation in a centrifugal pump.