Abstract:
A water treatment device (100) comprising a first hydrocyclone (102) and a biocidal fluid injector (120) is described. The first hydrocyclone (102) has an internal space (104), a water inlet (106) for supplying water into the internal space (104), a base outlet (108) for discharging at least a part of the water, and an apex outlet (112). The biocidal fluid injector (120) is configured to inject a biocidal fluid into the internal space (104) for eliminating organisms present in the water. The biocidal fluid injector (120) is positioned such that a pressure within the injected biocidal fluid is lower than a head pressure of the first hydrocyclone (102).
Abstract:
The present invention relates to gas-insulated electrical apparatuses, in particular gas-insulated transformers or reactors, comprising a housing enclosing an interior space, in which an electrical component comprising a winding is arranged, at least a portion of the interior space defining an insulation space which is filled with an insulation fluid electrically insulating at least a part of the electrical component from the housing. According to the invention, the electrical apparatus further comprises a cooling element comprising a condenser, an evaporator and a cooling fluid to be circulated between the condenser and the evaporator. The evaporator is designed such that at least a part of the electric component is immersed in the cooling fluid in its liquid state, thus being in direct contact with the cooling fluid.