A thermal transfer device has a body and a fluid conduit defined in the body. The body has a thermal transfer surface configured to be placed in contact with a target component. The fluid conduit is configured for conveying fluid through the body and is thermally coupled to the thermal transfer surface.

The invention concerns a heat exchanger comprising several plates arranged parallel to one another and to a longitudinal direction so as to define a first series of passages for channeling at least one first fluid and a second series of passages for channeling at least one second fluid which is to be brought into a heat-exchange relationship with at least said first fluid, a mixer device being arranged in said at least one passage of the first series and comprising at least one first channel for the flow of a first phase of the fluid in the longitudinal direction, at least one second channel for the flow of a second phase of the fluid, and a plurality of orifices fluidically connecting the first channel to the second channel, said orifices occupying successive positions in the longitudinal direction. According to the invention, the distances between two successive positions, measured parallel to the longitudinal direction, are variable.

The invention relates to a heat exchanger block 2 and to a heat recovery ventilation unit 1 comprising such a heat exchanger block. In the heat exchanger block 2, the individual flow cross-section (Q1) of flow passages of said plurality of first air flow passages (AFP1) in said parallel flow region (PF) and the individual flow cross-section (Q2) of flow passages of said plurality of second air flow passages (AFP2) in said parallel flow region (PF) gradually, preferably linearly, decrease along a straight line (x-x) perpendicular to the parallel air flow passages (AFP1 and AFP2) and from said first wall (W1) to said second wall (W2) of the block.

A heat exchanger including a plurality of heat exchanger plates in a stacked arrangement. At least two counterflow sections are positioned adjacent each other. The counterflow sections comprise an intermediate section of each heat exchanger plate. The heat exchanger plates configured to transfer heat between a first fluid and a second fluid flowing in an opposite directions from the first fluid through a respective heat exchanger plate. At least one tent section is positioned on each end of each counterflow section. The tent sections are configured to angle the flow direction of the first and second fluids in the tent sections relative to the flow direction in the counterflow sections. A wall is positioned between each tent section and each counterflow section configured to provide a load path at opposite ends of the heat exchanger to oppose forces due to pressure on the tent sections.

An improved indirect heat exchanger is provided which is comprised of a plurality of coil circuits, with each coil circuit comprised of an indirect heat exchange section tube run or plate. Each tube run or plate has at least one change in its geometric shape or may have a progressive change in its geometric shape proceeding from the inlet to the outlet of the circuit. The change in geometric shape along the circuit length allows simultaneously balancing of the external airflow, internal heat transfer coefficients, internal fluid side pressure drop, cross sectional area and heat transfer surface area to optimize heat transfer.

A heat exchanger including a plurality of heat exchanger plates in a stacked arrangement. At least two counterflow sections are positioned adjacent each other. The counterflow sections comprise an intermediate section of each heat exchanger plate. The heat exchanger plates configured to transfer heat between a first fluid and a second fluid flowing in an opposite directions from the first fluid through a respective heat exchanger plate. At least one tent section is positioned on each end of each counterflow section. The tent sections are configured to angle the flow direction of the first and second fluids in the tent sections relative to the flow direction in the counterflow sections.

A heat exchanger with plates defining a first series of passages for channeling at least one refrigerant fluid and a second series of passages for channeling at least one calorigenic fluid, at least one passage of the first series being defined between a first plate defining an adjacent passage of the second series and a second plate. A mixing device is arranged in the passage of the first series and includes a first surface arranged facing the first plate and a second surface arranged facing the second plate, at least one first channel for channeling a gas phase of the refrigerant fluid, and at least one second channel for channeling a liquid phase of the refrigerant fluid.

A printed circuit heat exchanger is provided. The printed circuit heat exchanger may include: a first bonding plate configured to include two plates bonded to each other and zigzag-shaped flow channels formed adjacent to each other between the two plates such that some sections of each of the plurality of flow channels are formed to overlap with adjacent flow channels; and a second bonding plate configured to include two plates bonded to each other and zigzag-shaped flow channels formed adjacent to each other between the two plates such that some sections of each of the plurality of flow channels are formed to overlap with adjacent flow channels, wherein the first bonding plate and the second bonding plate are alternately stacked.

A thermal transfer device has a body and a fluid conduit defined in the body. The body has a thermal transfer surface configured to be placed in contact with a target component. The fluid conduit is configured for conveying fluid through the body and is thermally coupled to the thermal transfer surface. The fluid conduit is configured so that: at a first junction, the fluid conduit branches into a first channel and a second channel which extend adjacent and generally parallel to one another along an initial portion of the fluid conduit; the first and second channels diverge away from one another at an end of the initial portion such that each of the first and second channels forms a serpentine path; and the first and second channels merge at a second junction. The serpentine paths formed by the first and second channels extend toward generally opposite directions.

A counter-current cross-flow heat exchanger for heating a first gas and cooling a second gas, includes modules in fluid communication with one another, each module being positioned on a plane, the planes mutually overlapping. Conduits allow entry and exit of the first and second gases into and out of the exchanger. Each module has heat exchange plates, with heating and cooling faces. The plates are orthogonal to the module plane and parallel to define alternating heating and cooling spaces. The first gas crosses each heating space with a direction substantially parallel to the plane of each module and the second gas crosses each cooling space with a direction substantially orthogonal to the plane of each module. The cooling spaces between adjacent modules are in direct fluid communication. The heating spaces between adjacent modules are in fluid communication with one another by conduits/conveyors, creating a serpentine path.