The present invention relates to an electric heating device (3) in an exhaust gas system (1), having an outer circumferential, in particular circular, housing (4), wherein a rib structure is arranged in the housing (4), which rib structure can be heated by applying an electric current to it. The rib structure is arranged with rib rows (7) parallel to one another in the housing (4), wherein the parallel-arranged rib rows (7) are arranged such that are electrically connected to one another in series or in parallel.

A cooling assembly includes a cold plate in contact with a heat generating component, a housing on one side of the cooling assembly in a first direction with respect to the cold plate, a first wall located between the housing and the cold plate, and a second wall separating a plate chamber defined by the housing and the first wall into a first plate chamber and a second plate chamber adjacent to each other in a second direction orthogonal to the first direction. The first wall includes a first through hole opposing the cold plate in the first plate chamber and a second through hole opposing the cold plate in the second plate chamber.

Proposed is a heatsink module for an inverter. The heatsink module includes a housing a bottom face, both spaced side walls, and both flanges. The heatsink module include a heat-dissipation plate including a base fixed to the both flanges; and a plurality of heat-dissipation fins extending downward from a bottom of the base. The heatsink module includes a supporter interposed between the bottom face of the housing and the heat-dissipation fins. The supporter has slots defined therein for accommodating at least portions of the heat-dissipation fins respectively.

A first passage forming member and a second passage forming member each include: a rib portion including a first wall portion constituting an end in a first direction of the first passage, a second wall portion constituting an end in the first direction of the second passage, and a third wall portion separating the first passage and the second passage adjacent to each other in a second direction from each other; a board being in contact with an end in a third direction of the rib portion, and separating a first connection passage and a second connection passage from each other; a first blocking portion installed at the end of the rib portion, to block between the first passage and the second connection passage; and a second blocking portion installed at the end of the rib portion, to block between the second passage and the first connection passage.

The disclosed embodiments relate to a system that provides a polymer heat exchanger with internal microscale flow passages. The system includes a set of plates comprised of a polymer that includes internal microscale flow passages, which are configured to carry a liquid. The set of plates is organized into a stack, wherein consecutive plates in the stack are separated by fins to form intervening air passages. The system includes a liquid flow pathway, which flows from a liquid inlet, through the internal microscale flow passages in the stack of plates, to a liquid outlet. It also includes an airflow pathway, which flows from an airflow inlet, through the intervening air passages between the consecutive plates in the stack of plates, to an airflow outlet. The liquid flow pathway flows in a direction opposite to a direction of the airflow pathway to provide a counterflow design that optimizes heat transfer between the liquid flow pathway and the airflow pathway.

Various implementations described herein relate to a heat sink having a base and a plurality of fins extending from the base. Each of the plurality of fins is spaced apart from other ones of the plurality of fins. The plurality of fins includes first fins and second fins. Each of the first fins is perpendicular to any of the second fins.

A method for forming features in an exterior surface of a heat transfer tube includes forming a plurality of channels into the surface, where the channels are substantially parallel to one another and extend at a first angle to a longitudinal axis to the tube. A plurality of cuts are then made into the surface substantially parallel to one another and extend at a second angle to a longitudinal axis to the tube different from the first angle. Individual fin segments extend from the surface and are separated from one another by the channels and the cuts. The fin segments have a first channel-adjacent edge adjacent substantially parallel to the channel, a first cut-adjacent edge substantially parallel to the cut, and a corner formed by a second channel-adjacent edge and a second cut-adjacent edge. A tube formed using this method can be used as a condenser tube.

A method of forming a cast heat exchanger plate includes forming at least one hot core plate defining internal features of a one piece heat exchanger plate and at least one first set of interlocking features. At least one cold core plate is formed defining external features of the heat exchanger plate and at least one second set of interlocking features. A core assembly is assembled where each hot core plate is directly interlocked to at least one cold core plate. A wax pattern is formed with the core assembly with an external shell formed over the wax pattern. The wax pattern is removed to form a space between the core assembly and the external shell. The space is filled with a molten material. Once the molten material has solidified, the external shell and the core are removed.

This disclosure provides a series connected water cooling structure. Each water cooling head includes a housing, and the housing includes a water inlet and a water outlet. The connecting pipes are connected between the water cooling heads to be in a series manner. The connecting pipes are connected to the water inlets of adjacent water cooling heads to configure the series connected water cooling heads. The water-inlet pipe and the water-outlet pipe are connected to the water inlet and water outlet of the series connected water cooling heads respectively. The water-inlet pump and the water-outlet pump are arranged on the water-inlet pipe and the water-outlet pipe respectively. Therefore, the heat dissipation efficiency is improved.

A heat radiator includes a plate-shaped base portion that extends in a first direction along the flowing direction of a refrigerant and in a second direction perpendicular or substantially perpendicular to the first direction and has a thickness in a third direction and a fin protruding from the base portion toward one side in the third direction. The fin includes a flat plate-shaped sidewall that extends in the first direction and the third direction with the second direction being a thickness direction. The sidewall includes a protrusion protruding in the second direction. A protrusion amount of the protrusion in the second direction is equal to or less than half of an interval between the sidewalls of the fin adjacent in the second direction. The protrusion includes an opposing surface opposing the flowing direction of the refrigerant. The opposing surface has a rectangular or substantially rectangular shape extending from the sidewall.