A heat exchanger module having at least two fluid circuits, of longitudinal axis including a stack of plates, defining at least two fluid circuits, at least a part of the plates each including fluid circulation channels, the channels of at least one of the two circuits, referred to as first circuit, having at least one fluid supply and distribution zone for supplying and distributing fluid from outside the stack, forming a fluid pre-header, in which zone the channels are delimited by studs distributed over the surface of the plate; an exchange zone continuous with the pre-header and wherein the channels are each delimited by a groove separated from one another by a rib and extending along the longitudinal axis.

The present invention relates to a heat exchanger comprising: a header tank having a plurality of flow paths in which a heat exchange medium flows; multiple rows of tubes connected to the header tank; and heat radiation fins interposed between the tubes, wherein the tubes include a heat exchange part coupled to the heat radiation fins and a coupling part that is formed on a longitudinal end of the heat exchange part and coupled to the header tank, the width of the coupling part is formed to be less than the width of the heat exchange part so that the overall package size of the heat exchanger may be reduced, thus enabling a compact configuration, and the space between neighboring rows of the tubes may be reduced, thus making it possible to reduce the material of the heat radiation fins.

A tube sheet for a thermal transfer device can include a body having a plurality of apertures that traverse therethrough, where the plurality of apertures are configured to receive a plurality of tubes of the thermal transfer device. The tube sheet can also include an outer perimeter defining the body, where the outer perimeter has at least one first recess feature disposed therein. The at least one first recess feature can have a first shape and a first size, where the first shape is any shape aside from a semi-circle.

A heat exchanger includes a first side opposite a second side and a third side opposite a fourth side and a cold layer with an inlet at the first side of the heat exchanger, an outlet at the second side of the heat exchanger, and a cold passage extending from the inlet to the outlet. The heat exchanger also includes a hot layer with an inlet manifold at the third side of the heat exchanger extending between the first side and the second side, an outlet manifold at the fourth side of the heat exchanger opposite the inlet manifold and extending between the first side and the second side, a hot passage extending from the inlet manifold to the outlet manifold, and a tube on the first side of the heat exchanger extending from the third side to the fourth side.

A cooling device for a stator of an electrical machine, for fitting together with a hollow cylindrical laminated core of the stator, includes multiple cooling channels for conducting cooling fluid along the laminated core, and a fluid ring for provision on an end face of the laminated core. The fluid ring has two fluid ring channels for distributing the cooling fluid to the cooling channels and for receiving the cooling fluid from the cooling channels, and at least two cooling fluid connections for introducing and removing the cooling fluid into and from the fluid ring channels. The fluid ring channels have circumferential-angle-dependent flow cross-sections in the flow direction, in order to evenly distribute the cooling fluid to the cooling channels.

A heat exchanger includes a first side opposite a second side and a third side opposite a fourth side and a cold layer with an inlet at the first side of the heat exchanger, an outlet at the second side of the heat exchanger, and a cold passage extending from the inlet to the outlet. The heat exchanger also includes a hot layer with an inlet manifold at the third side of the heat exchanger extending between the first side and the second side, an outlet manifold at the fourth side of the heat exchanger opposite the inlet manifold and extending between the first side and the second side, a hot passage extending from the inlet manifold to the outlet manifold, and a tube on the first side of the heat exchanger extending from the third side to the fourth side.

A cooling device for a stator of an electrical machine, for fitting together with a hollow cylindrical laminated core of the stator, includes multiple cooling channels for conducting cooling fluid along the laminated core, and a fluid ring for provision on an end face of the laminated core. The fluid ring has two fluid ring channels for distributing the cooling fluid to the cooling channels and for receiving the cooling fluid from the cooling channels, and at least two cooling fluid connections for introducing and removing the cooling fluid into and from the fluid ring channels. The fluid ring channels have circumferential-angle-dependent flow cross-sections in the flow direction, in order to evenly distribute the cooling fluid to the cooling channels.

A refrigerant evaporator includes a first core, a second core, a first plate, and a second plate. The first core and the second core respectively include a plurality of first tubes and a plurality of second tubes extending along a tube longitudinal direction and stacked along a tube stacking direction. The first plate houses one end portions of the first tubes and the second tubes. The second plate faces the first core and the second core across the first plate and is joined to the first plate in the tube longitudinal direction. The second plate includes a plurality of ribs. The ribs and the first plate define a plurality of intermediate passageways therein. Each of the intermediate passageways allows communication between a corresponding one of the first tubes and a corresponding one of the second tubes.

Modular flow control systems include several differently-shaped structures to achieve desired flow characteristics in fluid flow. Systems include one or many plates held in desired positions by a retainer within the flow. The plates are uniquely shaped based on their position, or vice versa, to shape flow in a desired manner. The plates may fill an entire flow area or may extend partially throughout the area. Plates can take on any shape and are useable in systems installed in any type of flow conduit. When used in a PCCS upper manifold in a nuclear reactor, a chevron plate directly below the inlet divides flow along the entire upper manifold. Perforated plates allow flow to pass at ends of the PCCS upper manifold. The plates can be installed along a grooved edge during an access period and held in static position by filling the length of the PCCS upper manifold.

A heat exchanger including: a header; flat tubes connected to the header and disposed in line along a longitudinal direction of the header; a first partition that partitions an inner space of the header into a first space on a side where the flat tubes are connected and a second space on a side opposite to the first space; and a second partition that partitions the inner space of the header into a first side and a second side. The first side is one side of the header in the longitudinal direction and the second side is opposite to the first side. The first partition has a common opening. The common opening includes an insertion opening and a refrigerant opening. A refrigerant moves between the first space and the second space via the refrigerant opening. The second partition is inserted into the insertion opening.