A microfluidic device having a channel within a first material to thermally couple with an IC die. The channel defines an initial fluid path between a fluid inlet port and a fluid outlet port. A second material is within a portion of the channel. The second material supplements the first material to modify the initial fluid path into a final fluid path between the fluid inlet port and the fluid outlet port. The second material may have a different composition and/or microstructure than the first material.

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.

The invention describes features that can be used to control flow to an array of microchannels. The invention also describes methods in which a process stream is distributed to plural microchannels.

An evaporator used in a car air conditioner satisfies a a relation of 0.9P1/P21.1, where P1 is the passage cross sectional area of each portion of a refrigerant discharge passage of a refrigerant inlet outlet member of the evaporator, and P2 is the passage cross sectional area of a pipe which establishes communication between a second refrigerant passage of an expansion valve and a compressor. Preferably, relations of W1>W2 and H1>H2 are satisfied, where W1 and H1 are the internal width and height of an upstream end portion of a straight portion of an outward bulged portion of a third plate of the refrigerant inlet outlet member, and W2 and H2 are the internal width and height of a downstream end portion of the outward bulged portion.

A device for the exchange of heat between a first and a second medium with pairs of trays stacked one on top of the other in a stacking direction is provided, wherein a first flow chamber that can be flowed through by a first medium is provided between the two trays of at least one pair of trays or several pairs of trays and a second flow chamber that can be flowed through by a second medium is provided between two pairs of trays adjacent to one another, wherein the first flow chamber has first flow path with flow path sections that can be flowed through consecutively in opposite directions for the first medium, which are separated from one another by a division wall arranged between the at least two trays of the at least one pair of trays, and wherein the second flow chamber has a second flow path for the second medium.

The heat exchanger includes a plastic multi-tube panel core and a solid plastic housing, with opposed-flow heat exchange and inlet-outlet extensions from only one side of the core. The multi-tube panels are spaced from one another by spacers positioned along the length of the panels. The spacers guide intake air in one direction along a sinuous path in the spaces between the panels, while exhaust air flows in the opposite direction through the tubes in the panels.

A vehicle heat exchanger tube (2) comprises at least a first and a second separate fluid channel (14, 16). A tube stiffener (38) has a first stiffening portion (40) stiffening the first channel (14) of the tube (2), and a second stiffening portion (42) stiffening the second channel (16) of the tube (2). The first stiffening portion (40) comprises a first supporting surface (46) supporting the first larger surface (20) of the first channel (14), and a second supporting surface (48) supporting the second larger surface (22) of the first channel (14). The second stiffening portion (42) comprises a first supporting surface (56) supporting the first larger surface (26) of the second channel (16), and a second supporting surface (58) supporting the second larger surface (28) of the second channel (16).

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.

Condensate accumulating in the incoming outside air flow passages of a heat exchanger is fed back into the exhaust flow passages of the heat exchanger to provide improved heat transfer in the heat exchanger, and to avoid the necessity for drainage of the condensate from the heat exchanger. The heat exchanger includes a plastic multi-tube panel core and a solid plastic housing, with opposed-flow heat exchange and inlet-outlet extensions from only one side of the core.

The present disclosure relates to an energy module having a plurality of energy generating cells, and at least one cooling plate having opposing surfaces. The cooling plate is disposed between an adjacent pair of the energy generating cells such that the opposing surfaces of the cooling plate are in contact with surfaces of the adjacent pair of energy generating cells. The cooling plate has at least one coolant flow channel configured to receive a coolant flow therethrough to limit propagation of heat from one to the other of either one of the adjacent pair of energy generating cells when either one of the adjacent pair of energy generating cells fails.