A vacuum ice slurry generator utilizes the triple-point process: Water evaporates in a “stirring tank” at 0 °C and a pressure of 6 mbar. The resulting water vapor is extracted by a turbo compressor, compressed to a higher pressure, and condensed. In this process, the heat of condensation is transferred to the cooling water. Heat is required to generate the water vapor in the evaporator, which is extracted from the liquid water. This causes ice crystals to form on the water’s surface and ultimately results in a pumpable water-ice mixture (ice slurry). The ice slurry is continuously pumped out of the evaporator and conveyed, for example, to a storage tank. In applications involving water-source heat pumps, the ice slurry is returned to the water body. The core component of the developed low-capacity vacuum ice generator is a new turbo compressor. Individual parts of the compressor, such as the impeller and drive, had already been developed in previous projects. As part of this project, extensive work was carried out on the sizing, design, and fluid dynamics optimization of the compressor housing. Other key areas of focus included the vibration optimization of the entire system, the design of the shaft-hub connection, and the sizing and design of the other subcomponents of the ice generator, such as the tank, the agitator in the evaporator, and the direct condenser.