Abstract: The invention relates to a heat exchanger having parallel plates defining channels for heating or cooling fluids, spacers extending between the plates and defining channels, and an individual casing covering the plates and having a fireproof heat insulation layer.

Abstract: A method for repairing a plate heat exchanger of the type comprising a plurality of plates which, together with side bars arranged on the plates, define fluid flow paths is presented.

Abstract: A heat exchanger with brazed plates including a stack of parallel plates defining a plurality of generally flat fluid circulating passages, closure bars which delimit the passages and distributing means for distributing a fluid to each passage of a first series of passages and means for conveying another fluid to a second series of passages where at least one passage contains organized exchanging structures which form a plurality of channels in the width of the passage and also at least three channels in the height of the passage is provided. The invention is useful for air separation by cryogenic distillation.

Abstract: A method for repairing a plate heat exchanger of the type comprising a plurality of plates which, together with side bars arranged on the plates, define fluid flow paths is presented.

Abstract: A method of manufacturing a plate heat exchanger of the type comprising a plurality of plates defining paths for fluids to flow through, the plates being assembled to each other by brazing, and a heat exchanger produced by such a method is presented.

Abstract: A method for producing a plate heat exchanger, and a plate heat exchanger produced on the basis of such a method of production is provided.

Abstract: The invention relates to a strip of corrugations (2) for brazed plate and fin heat exchangers of the type with partial offset, comprising a series of zones for brazing on a first separation sheet (1), a series of zones for brazing on a second separation sheet (1) adjacent to the first separation sheet (1) and a series of wings (13, 14), said wings forming the fins, of which at least one of the wings (14) of a corrugation is inclined without being perpendicular to the separation sheets (1) and of which at least one of the wings (13) has at least one section perpendicular to the separation sheets (1) and a brazed plate or fin exchanger comprising said corrugations.

Abstract: The invention concerns a heat exchanger with brazed plates comprising a stack of parallel plates defining a plurality of generally flat fluid circulating passages, closure bars which delimit said passages and distributing means for distributing a fluid to each passage of a first series of passages and means for conveying another fluid to a second series of passages wherein at least one passage contains organized exchanging structures (15) which form a plurality of channels (19) in the width of the passage and also at least three channels (19) in the height of the passage. The invention is useful for air separation by cryogenic distillation.