A brazed plate heat exchanger (100) includes a plurality of first and second heat exchanger plates (110, 120), wherein the first heat exchanger plates (110) are formed with a first pattern of ridges and grooves, and the second heat exchanger plates (120) are formed with a second pattern of ridges and grooves providing contact points between at least some crossing ridges and grooves of neighbouring plates under formation of interplate flow channels for fluids to exchange heat, said interplate flow channels being in selective fluid communication through port openings. The first pattern of ridges and grooves is different from the second pattern of ridges and grooves, so that an interplate flow channel volume on one side of the first heat exchanger plates (110) is different from an interplate flow channel volume on the opposite side of the first heat exchanger plates (110), and at least some of the ridges and grooves of the first pattern extend in a first angle (β1) and at least some of the ridges and grooves of the second pattern extend in a second angle (β2) different from the first angle (β1).

A heat exchanger suitable to be used as a recuperator in a micro gas turbine including a stack of cells. Each of the cells includes a pair of mutually spaced-apart plates and layers including heat exchange elements arranged at the outer surfaces of the plates and between the plates. Each of the layers including heat exchange elements can include at least one discrete spatial component incorporating a number of elements. Both a supply header and a discharge header of the heat exchanger can be made of only two components at the position of the stack of cells. Compensating for heat expansion effects can be via a bellows-shaped pipe portion of a supply conduit.

A heat exchanger suitable to be used as a recuperator in a micro gas turbine including a stack of cells. Each of the cells includes a pair of mutually spaced-apart plates and layers including heat exchange elements arranged at the outer surfaces of the plates and between the plates. Each of the layers including heat exchange elements can include at least one discrete spatial component incorporating a number of elements. Both a supply header and a discharge header of the heat exchanger can be made of only two components at the position of the stack of cells. Compensating for heat expansion effects can be via a bellows-shaped pipe portion of a supply conduit.

A total heat exchange element includes a stacked body that is formed by alternately stacking a first layer provided with a first passage through which a first air flow passes and a second layer provided with a second passage through which a second air flow passes. The stacked body includes a partition member between the first layer and the second layer, a spacing member provided in the first layer and the second layer and maintaining a spacing between the partition members facing each other, and a latent heat shielding member provided partly on the partition member and shielding transfer of latent heat between the first air flow and the second air flow through the partition member.

A total heat exchange element includes a stacked body that is formed by alternately stacking a first layer provided with a first passage through which a first air flow passes and a second layer provided with a second passage through which a second air flow passes. The stacked body includes a partition member between the first layer and the second layer, a spacing member provided in the first layer and the second layer and maintaining a spacing between the partition members facing each other, and a latent heat shielding member provided partly on the partition member and shielding transfer of latent heat between the first air flow and the second air flow through the partition member.

A plate for a heat exchanger has a longitudinal centerline, a reference plane parallel to the longitudinal centerline, and multiple corrugations provided in the plate that define flow channels through which fluid flows. The corrugations extend at an angle to the reference plane and at least some of the corrugations are intersected by the reference plane, wherein over at least a portion of a surface area of the plate the corrugations are arranged in sub-regions that have a longitudinal length and the corrugations of each sub region are at the same angle relative to the longitudinal centerline, and the corrugations of adjacent sub-regions are at different angles from each other, and wherein the corrugations in adjacent sub-regions meet at junctions and the junctions are not longitudinally aligned.

A plate for a heat exchanger has a longitudinal centerline, a reference plane parallel to the longitudinal centerline, and multiple corrugations provided in the plate that define flow channels through which fluid flows. The corrugations extend at an angle to the reference plane and at least some of the corrugations are intersected by the reference plane, wherein over at least a portion of a surface area of the plate the corrugations are arranged in sub-regions that have a longitudinal length and the corrugations of each sub region are at the same angle relative to the longitudinal centerline, and the corrugations of adjacent sub-regions are at different angles from each other, and wherein the corrugations in adjacent sub-regions meet at junctions and the junctions are not longitudinally aligned.

A stacked plate heat exchanger for a motor vehicle is disclosed. The stacked plate heat exchanger includes a plurality of elongated stacked plates extending in a longitudinal direction and stacked against one another perpendicularly to the longitudinal direction in a stacking direction. First hollow spaces and second hollow spaces are disposed between adjacent stacked plates, through which alternatingly a first medium and a second medium flows. At least one stacked plate has a rib structure disposed on a respective plate surface, structured and arranged to provide a plurality of flow passages within the respective hollow space. The rib structure has a guiding region and two distribution regions. The rib structure differs in the guiding region and in the two distribution regions by shape and size of the plurality of flow passages.

A stacked plate heat exchanger for a motor vehicle is disclosed. The stacked plate heat exchanger includes a plurality of elongated stacked plates extending in a longitudinal direction and stacked against one another perpendicularly to the longitudinal direction in a stacking direction. First hollow spaces and second hollow spaces are disposed between adjacent stacked plates, through which alternatingly a first medium and a second medium flows. At least one stacked plate has a rib structure disposed on a respective plate surface, structured and arranged to provide a plurality of flow passages within the respective hollow space. The rib structure has a guiding region and two distribution regions. The rib structure differs in the guiding region and in the two distribution regions by shape and size of the plurality of flow passages.

A heat exchanger (100) includes a flow path layer (10) in which a first flow path (11) extending in a first direction and a second flow path (12) extending in a second direction are disposed in the same layer. In each of the first flow path and the second flow path, a flow path cross-sectional area is reduced and expanded along an extending direction of the flow path. The first flow path and the second flow path intersect each other in the same layer in first portions (23, 33) of which the flow path cross-sectional area is reduced, due to displacement of the first portions (23, 33) in a third direction.