Abstract: Wind turbine comprising a tower with an interior enclosed by a tower wall which forms a heat exchange surface in an air cooling circuit wherein the tower interior forms a channel for guiding hot air along a flow path, wherein one or more air flow deflectors are arranged within the flow path for guiding the flow towards the tower wall. The flow deflectors can for example be active flow deflectors, such as fans or blowers, or passive flow deflectors, such as one or more static flow deflector plates or vanes, forming a static mixer element.

Abstract: Wind turbine comprising a tower with an interior enclosed by a tower wall which forms a heat exchange surface in an air cooling circuit wherein the tower interior forms a channel for guiding hot air along a flow path, wherein one or more air flow deflectors are arranged within the flow path for guiding the flow towards the tower wall. The flow deflectors can for example be active flow deflectors, such as fans or blowers, or passive flow deflectors, such as one or more static flow deflector plates or vanes, forming a static mixer element.

Abstract: The invention concerns a wind turbine comprising a vertical tower with a yaw bearing, a nacelle on top of the yaw bearing, a hub with blades rotatable around a more or less horizontal rotation axis. The nacelle has a generator and a control room, whereby the generator comprises a rotor with a rotor shaft supported on two rotor bearings carrying the hub, and a stator comprising a cylindrical outer shell with a stator diameter that is approximately equal to the diameter of the nacelle and which outer shell has at its ends a front cover plate and a back cover plate each with a rotor bearing for supporting the rotor shaft. In accordance with the invention the rotor shaft is hollow and the hollow hub is accessible from the control room through the hollow rotor shaft.

Abstract: The invention concerns a wind turbine comprising a vertical tower with a yaw bearing, a nacelle on top of the yaw bearing, a hub with blades rotatable around a more or less horizontal rotation axis. The nacelle has a generator and a control room, whereby the generator comprises a rotor with a rotor shaft supported on two rotor bearings carrying the hub, and a stator comprising a cylindrical outer shell with a stator diameter that is approximately equal to the diameter of the nacelle and which outer shell has at its ends a front cover plate and a back cover plate each with a rotor bearing for supporting the rotor shaft. In accordance with the invention the rotor shaft is hollow and the hollow hub is accessible from the control room through the hollow rotor shaft.