Abstract: Electronic arrangement comprising at least one electronic device or a system of multiple at least functionally connected electronic devices, comprising data repository configured to store digital online course material for distance learning, provided by a plurality of content providers, said digital course material encompassing course content divided into a plurality of different learning objectives, said digital course material being further arranged into a plurality of separately accessible digital data ensembles each of which addressing a learning objective of said plurality, wherein each learning objective of said plurality is covered by at least one of the plurality of ensembles, and wherein at least one learning objective of said plurality, optionally each learning objective of said plurality, is covered by multiple alternative data ensembles of the plurality of ensembles, online platform configured to provide online access to a plurality of users regarding said stored digital course material including

Abstract: A boiler and a method in a boiler producing thermal energy, the method including: combustion or fuel and combustion air in the furnace of the boiler, delimited by walls; receiving of thermal energy by a steam superheater placed on the wall of the furnace and including at least one heat exchange surface, and supplying of gas or a gas mixture to the front of said heat exchange surface to form a barrier layer for protecting the heat exchange surface from flue gases developed in connection with the combustion. At least one supply device is provided in the superheater or in the direct vicinity of the superheater, to supply gas or a gas mixture to the front of said heat exchange surface to form a barrier layer to protect the heat exchange surface from the flue gases in the boiler.

Abstract: A fixing arrangement of a chipper blade for a chipper having a cylindrical blade disc, one end surface of which is provided with one or more blades extending essentially radially in relation to the blade disc and for support thereof a wearing segment is arranged, the chipper is provided with a wearing surface subsequent the blade for resisting the stress caused by the logs being chipped in the chipper. At least one blade segment is arranged to be supported onto the blade and the wearing segment, an upper surface of which forms a desired portion of the wearing surface, and a coating is formed on the upper surface to resist stress.

Abstract: The invention relates to a combined fluidized bed and pulverized coal combustion method and system. In the method, fluidizing air (4) is injected into a fluidized bed (2) situated in the bottom portion of the combustion chamber (3). Into the combustion chamber, to above the fluidized bed (2), is fed a mixture of pulverized coal and a carrier gas from a second set of fuel feed means (6) at a mass flow rate which is higher or at least substantially equal to the upper ignition limit of the mixture, and the mixture of the pulverized coal and the carrier gas at least by the fluidizing air (4), and at least a fraction of the fuel fed via the second set of fuel feed means (6) is combusted above the fluidized bed (2).