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.

A cross-over fluid coupling includes a first coupling end and a second coupling end. A plurality of first conduits have inner ends disposed toward the first coupling end and outer ends spaced apart from the inner end toward the second coupling end and being outboard of the inner end. A plurality of second conduits have outer ends that are disposed toward the first coupling end and positioned laterally outboard of the inner end of at least one of the first conduits, and inner ends that are spaced apart from the outer end toward the second coupling end in the axial direction and is laterally inboard of the outer end of the at least one of the first conduits.

A cell structure is provided that is (i) capable of handling, on inner and outer surfaces, heat transfer requirements of heat exchangers and/or be a substrate for coatings for catalytic reactors, (ii) able to be easily combined and interconnected into a variety of shapes, and (iii) may be created in an additive manufacturing process. The provided cell structure may be replicated and interconnected with other cell structures to create lattice structures in a variety of shapes. Accordingly, the cell structure may be used to build a heat exchanger or catalytic reactor that has reduced weight compared to traditional architectures.

A heat exchanger includes a core comprising a single piece continuous boundary having a first surface defining a first labyrinth, and an opposing second surface defining a second labyrinth; a first inlet manifold connected to the first labyrinth and configured to supply a first fluid to the first labyrinth; and a second inlet manifold connected to the second labyrinth and configured to supply a second fluid to the second labyrinth; wherein the core comprises a plurality of identical three dimensional unit cell structures replicated in three orthogonal spatial dimensions.

A heat exchanger comprises a conduit with an interior surface which defines a first flow passage. A first plurality of fins project inwardly from the interior surface of the conduit. The first plurality of fins are angled relative to a longitudinal axis (X) of the conduit so as to form helical flowpaths for fluid flowing through the first flow passage. A second flow passage disposed outwardly of the interior surface and radially outwardly of the first plurality of fins.

An airflow system is provided that utilizes a vortex generator to efficiently draw ambient air into one or more automotive heat exchangers. Due to the use of the vortex generator, the air intake may be much smaller than that used in a conventional system and may have a significantly different aspect ratio from that of the heat exchanger, thus providing additional vehicle design flexibility. The vortex generator may use a single outlet or multiple outlets, and may be coupled directly or via a transition duct(s) to the heat exchanger(s).

Embodiments relate to a system with a primary body in communication with at least one heat source. A chamber housed within the primary body includes a boundary to separate the heat source from fluid contact and a secondary body housed in the chamber. The secondary body includes a conduit and a cover in communication with the conduit wherein the cover has a fluid flow inlet extending into the conduit and the conduit includes a series of convection ports to exhaust fluid into the chamber. Upon surging through the convection ports, the fluid comes in contact with the plenum of the primary body and dissipates the heat generated from the heat source and transferred to the primary body. An outlet, separate from the inlet, removes the fluid from the chamber.

A heat dissipation device is configured for a working fluid to flow therethrough. The heat dissipation device includes a base, at least one heat dissipation fin, and at least one fluid replenisher. The base has at least one internal channel configured for the working fluid to flow therethrough. The at least one heat dissipation fin having an extension channel and an inlet and an outlet is in fluid communication with the extension channel. The at least one heat dissipation fin is inserted into one side of the base, and the extension channel is communicated with the at least one internal channel through the inlet and the outlet. The at least one fluid replenisher is connected to at least one internal channel.

A heat transfer plate includes a heat transfer area provided with a heat transfer pattern having elongate alternately arranged heat transfer ridges and valleys, a respective top portion of the ridges extending in a top plane and a respective bottom portion of the valleys extending in a bottom plane. The heat transfer ridges include ridge contact areas within which the ridges are arranged to abut an adjacent first heat transfer plate. Within at least half of the heat transfer area, the top portions of the ridges have a first width w1, and the bottom portions of the valleys have a second width w2, w1w2. The top portion of a number of first heat transfer ridges of the heat transfer ridges, within a respective first ridge contact area of the ridge contact areas, has a third width w3, wherein, if w1>w2 then w3<w1, and, if w1<w2 then w3>w1.

A heat dissipation device is configured for a working fluid to flow therethrough. The heat dissipation device includes a base, at least one heat dissipation fin, and at least one fluid replenisher. The base has at least one internal channel configured for the working fluid to flow therethrough. The at least one heat dissipation fin having an extension channel and an inlet and an outlet is in fluid communication with the extension channel. The at least one heat dissipation fin is inserted into one side of the base, and the extension channel is communicated with the at least one internal channel through the inlet and the outlet. The at least one fluid replenisher is connected to at least one internal channel.