Abstract: A method for operating an arrangement (1) for storing thermal energy where the arrangement (1) includes an energy storage (2) having a temperature gradient. The method involves retrieving energy at a first temperature (T1) from the energy storage (2) for use in a first heat-absorbing system (3), such that free space is created in the energy storage (2) for energy at a second temperature (T2). The second temperature (T2) is higher than the first temperature (T1).

Abstract: The present invention relates to a thermal energy storage system comprising an energy storage (2) having a vertical temperature gradient and an internal combined heating and cooling machine (15). The internal combined heating and cooling machine (15) is adapted for retrieving energy having a first temperature from the energy storage, while simultaneously returning heated energy having a second higher temperature and cooled energy having a third lower temperature. The invention also relates to a method for using the thermal energy storage system.

Abstract: The present invention relates to a nozzle (100) for distribution of a fluid having a speed. The nozzle (100) defines a plurality of flow passages (150, 160, 170), at least one of the plurality of flow passages (150, 160, 170) is a central flow passage (160) and at least a first and a second of the plurality of flow passages (150, 160, 170) are outer flow passages (150, 170). The outlets (152, 172) of the outer flow passages (150, 170) are arranged on either side of the outlet (162) of the central flow passage (160). The second outer flow passage (170) has an inlet area (235) which is smaller than an outlet area (a3). A central axis of the inlets (210, 220, 230) is substantially perpendicular to a central plane of the outlets (152, 162, 172).

Abstract: The invention relates to a method for operating an arrangement (1) for storing thermal energy. The arrangement (1) comprises an energy storage (2) having a temperature gradient. The method comprises retrieving energy of a first temperature (T1) from the energy storage (2) for use in a first heat-absorbing system (3), such that free space is created in the energy storage (2) for energy of a second temperature (T2). The second temperature (T2) is higher than the first temperature (T1).

Abstract: The present invention relates to a thermal energy storage system comprising an energy storage (2) having a vertical temperature gradient and an internal combined heating and cooling machine (15). The internal combined heating and cooling machine (15) is adapted for retrieving energy having a first temperature from the energy storage, while simultaneously returning heated energy having a second higher temperature and cooled energy having a third lower temperature. The invention also relates to a method for using the thermal energy storage system.

Abstract: The present invention relates to a nozzle (100) for distribution of a fluid having a speed. The nozzle (100) defines a plurality of flow passages (150, 160, 170), at least one of the plurality of flow passages (150, 160, 170) is a central flow passage (160) and at least a first and a second of the plurality of flow passages (150, 160, 170) are outer flow passages (150, 170). The outlets (152, 172) of the outer flow passages (150, 170) are arranged on either side of the outlet (162) of the central flow passage (160). The second outer flow passage (170) has an inlet area (235) which is smaller than an outlet area (a3). A central axis of the inlets (210, 220, 230) is substantially perpendicular to a central plane of the outlets (152, 162, 172).