Abstract: A method for manufacturing a high temperature electrolyzer (HTE) or a high temperature fuel cell is disclosed. According to one aspect, the HTE includes a vertical stack of n elementary planar cells alternating with n+1 interconnection plates. Each of the elementary cells include a planar porous anode and a planar porous cathode each having cutouts formed therein. The anode and cathode are respectively positioned on each of the faces of a planar dense electrolyte. Brazed joints are formed by infiltration of a defined amount of a brazing composition in the electrodes at contact points between the elementary cells and the interconnection plates.

Abstract: A method for fabrication of heat exchangers with at least two fluid circuits each one comprising channels based on grooved plates includes assembling elementary exchanger modules, each of the elementary exchanger modules having been produced by diffusion bonding of grooved plates.

Abstract: An absorber for a solar receiver with a casing of lengthways axis including at a first lengthways end, a collector to supply a heat transfer fluid; and at a second lengthways end, a collector for evacuating the heat transfer fluid. The casing includes a first wall having a face intended to be subjected to a luminous flux, a second wall facing the first wall, and side walls connecting said the first and second walls. The casing is formed by at least one rib extending lengthways, and attached to the first and to the second wall. The at least one rib includes windows, and deflectors associated with the windows. The deflectors cause a portion of the heat transfer fluid to flow through the windows, causing reblending of the heat transfer fluid.

Abstract: A method for manufacturing a high temperature electrolyzer <<HTE>> or a high temperature fuel cell <<SOFC>>, comprising a vertical stack of n elementary planar cells alternating with n+1 interconnection plates, each of the elementary cells consisting of an openworked planar porous anode and an openworked planar porous cathode respectively positioned on each of the faces of a planar dense electrolyte, and brazed joints being made by infiltration of a defined amount of brazing in the electrodes at contact points between the elementary cells and the interconnection plates.