Rotor ventilation

Calculation of rotor ventilation and heat for turbo-generator radial and tangential air-cooling system. Abstract: Turbogenerators produce a vast portion of the electricity in the world. The cooling and ventilation required to take care of the excessive heat from the generators are costly.

Rotors for Heating, Ventilation and Air Conditioning Systems (HVAC). Save energy in the office, factory, at home and at sea. These devices perform fautless - whether the diameter is half a meter or eight meters.

Nothing outperforms rotary heat exchangers in terms of thermal energy recovery, regardless of the available. Taking one 1MW turbo generator rotor with air cooling as an investigative object, a discrete model for flow distribution of cooling medium of the rotor radial ventilation system was built. By applying the model, the radial ventilation system struc. Replacement rotor motor for the Axco HERU mechanical ventilation with heat recovery (MVHR) range, rpm 60.

Vi tilbyder slag og service af stald udstyr. This paper describes design changes on rotor ventilation system of the air-cooled synchronous machine. There are several variants for the analysis.

This research is performed to find possible ways for increase of the power output of the machine. The rotor cooling system uses an under winding cooling channel.

The present work reports the investigation on the cooling performance of rotor ventilation duct of turbine generator. An investigation using experimental and analytical approaches was carried out to understand the flow and heat transfer characteristics of a single rotor ventilation duct. For the investigation . A rotor assembly for a gas turbine engine, the rotor assembly comprises at least two rotors defining a cavity therebetween.

A first rotor defines a cooling air inlet in its radially inward portion. A second rotor defines a cooling air outlet in its radially outward portion, such that the cooling air passes radially outwardly through the . ROTOR VENTILATION FOR TURBO GENERATORS Filed Aug. Sheets-Sheet INVENTOR . Similar to the stator core lamination, the cylindrical rotor consists of steel laminations provided with radial ventilation channels to improve heat dissipation from rotor lamination core and field windings. These construction characteristics provide evenly distributed temperature . The gap-pickup diagonal flow ventilation system has been widely employed because of its shorter cooling channels and lower temperature rise.

The gas flow in the ventilation channels is maintained by the pressure difference between the inlet wedge and the outlet wedge, and the pickup capability of rotor wedge directly . Stator winding end turns are cooled by air discharging radially for the rotor fans, and passing through the spaces between the end turns. The stator core is uniformly cooled by air that flows from several inter-connected center chambers that receive air directly from the fans. From these center chambers the . Recent Technological and Scientific Advances Tomáš Březina, Ryszard Jabłoński. Analysis of Rotor Ventilation System of Air Cooled Synchronous Machine Through Computational Fluid Dynamics Jiří Francand Roman Pechanek2(✉) Faculty of Electrical Engineering, University of West Bohemia, Pilsen, Czech Republic . Both types use a motionless stator and a spinning rotor to convert electrical energy into mechanical power.

The operation of both types of motor is relatively simple and is briefly described below.

Alternating current is applied to the stator, which produces a rotating magnetic field in the stator. A magnetic field is also created in . Each lobe on the rotor is a magnetic pole. This provides several movements of north and south poles for each revolution of the shaft, causing high output at low rpm. As previously state the rotor is a magnet, but not of the permanent type. Direct current is applied to the coil . This induces an opposing current in the rotor winding and thus another magnetic field.

Interaction of these two fields produces a tangential force. As the rotor shaft is only restrained by its bearings, it has to rotate. Viewed from a fixed point on the rotor , the air-gap performance around a rotor with R slots will have R cycles of .