Abstract: The object of the invention is a print head for three-dimensional printing comprising an extrusion assembly (1) functionally coupled to a drive assembly (3), and a nozzle assembly (2), functionally coupled to the extrusion assembly (1), providing filament (10) transfer, wherein there is a cooling assembly (18) disposed between the extrusion assembly (1) and the drive assembly (2), containing a fluid cooling system, comprising an inlet (15), an outlet (17) and a system of cooling ducts (14) disposed inside the cooling assembly (18), distributing the cooling medium (11), providing maintenance of the preset temperature of the extrusion assembly (1) and the drive assembly (3). The object of the invention is also a print head assembly.

Abstract: The object of the invention is a print head for three-dimensional printing comprising an extrusion assembly (1) functionally coupled to a drive assembly (3), and a nozzle assembly (2), functionally coupled to the extrusion assembly (1), providing filament (10) transfer, wherein there is a cooling assembly (18) disposed between the extrusion assembly (1) and the drive assembly (2), containing a fluid cooling system, comprising an inlet (15), an outlet (17) and a system of cooling ducts (14) disposed inside the cooling assembly (18), distributing the cooling medium (11), providing maintenance of the preset temperature of the extrusion assembly (1) and the drive assembly (3). The object of the invention is also a print head assembly.

Abstract: The object of the invention is a control method of energy-consuming devices within a building, consisting of many kn areas with different energy demand, where each area has at least one energy-consuming device assigned, wherein a proper level of energy consumption Pw is determined on the basis of information about occupancy level N in the particular area kn and depends on occupancy level N, with a proper energy consumption level Pw1, . . . PwM within a predefined sub-period of time (t1, . . . , tM), during which the system turns on energy-consuming devices for time periods ton1, . . . , tonM, depending on the occupancy level N, in order to attain the previously determined energy consumption level Pw; having reached the previously determined energy consumption level, the system turns off energy consuming devices for periods toff1, . . . , toffM.