Abstract: The invention relates to a scalable device for storing and releasing energy, consisting of a housing that can be evacuated, a vacuum (12), at least one flywheel mass (2) on a shaft (17), at least one passive superconducting radial bearing and an electrical machine (24) that constitutes both a motor and a generator, wherein a cold surface is arranged in the vacuum container (11) for stabilizing the vacuum (12). The invention has the advantage that an energy store is provided that operates efficiently and cost-effectively with minimized energy losses, is scalable and also has sufficient safety elements to enable it to be used in industrial environments.

Abstract: A single-crystal pulling device includes vertically tilted magnetic coils between the walls of a cooling vessel. The inside and outside walls of the cooling vessel are coaxially aligned about a central axis. The inside wall of the cooling vessel is coaxially disposed around a cylindrical crucible that holds molten semiconductor material. A mid line passes through the middle point of a first coil, the central axis and the middle point of a second coil. The first coil is wound in a first plane, and the second coil is wound in a second plane. The first plane and the second plane both intersect the central axis at the same point. The first plane intersects the central axis at an angle between 5 and 15 degrees. In one embodiment, the first plane intersects the central axis below the crucible. In another embodiment, the first plane intersects the central axis above the crucible.

Abstract: The invention relates to a scalable device for storing and releasing energy, consisting of a housing that can be evacuated, a vacuum (12), at least one flywheel mass (2) on a shaft (17), at least one passive superconducting radial bearing and an electrical machine (24) that constitutes both a motor and a generator, wherein a cold surface is arranged in the vacuum container (11) for stabilizing the vacuum (12). The invention has the advantage that an energy store is provided that operates efficiently and cost-effectively with minimized energy losses, is scalable and also has sufficient safety elements to enable it to be used in industrial environments.

Abstract: A single-crystal pulling device includes vertically tilted magnetic coils between the walls of a cooling vessel. The inside and outside walls of the cooling vessel are coaxially aligned about a central axis. The inside wall of the cooling vessel is coaxially disposed around a cylindrical crucible that holds molten semiconductor material. A mid line passes through the middle point of a first coil, the central axis and the middle point of a second coil. The first coil is wound in a first plane, and the second coil is wound in a second plane. The first plane and the second plane both intersect the central axis at the same point. The first plane intersects the central axis at an angle between 5 and 15 degrees. In one embodiment, the first plane intersects the central axis below the crucible. In another embodiment, the first plane intersects the central axis above the crucible.