A heat exchanger that heats or cools water with a fluid includes: a heat transfer portion that includes fluid flow paths through which a fluid flows, and water flow paths through which water flows and that are adjacent to the fluid flow paths; an upstream portion that forms an upstream space on an upstream side of the water flow paths; and a distributor disposed in the upstream space and that distributes water that flows into the upstream space from a water entering port to the water flow paths.

The plate heat exchanger and method for manufacturing a plate heat exchanger comprise a stack of heat transfer plates, with first and second flow channels arranged between the plates. Pairs of heat transfer plates form cells. A cell comprises inner spacing elements arranged between the heat transfer plates leaving open a first inlet opening and a first outlet opening for the one of the fluids. The cell also comprises outer spacing elements welded to the heat transfer plates on the sides of the heat transfer plates facing away from each other. The cells are stacked against each other and joined together by welding via the outer spacing elements. The plate heat exchanger further comprises cover plates for covering sides of the stack of heat transfer plates with interruption for an inlet port section formed by the first inlet openings and an outlet port section formed by the first outlet openings. The two first sides of the cell comprising the first inlet opening or the first outlet opening comprise leakage passageways provided between the heat transfer plates for the one of the fluids, in addition to the passages provided by the first inlet opening and the first outlet opening.

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.

An Integrated Hybrid Compact Fluid Heat Exchanger is disclosed. An example embodiment includes: a micro-channeled plate for a stream of a working fluid, the micro-channeled plate being diffusion bonded or brazed with a cover plate; and a fin assembly brazed, diffusion bonded, or welded to the micro-channeled plate. Other embodiments include a fan or blower coupled to the Integrated Hybrid Compact Fluid Heat Exchanger via air ducting or close coupling.

The present invention provides a microchannel heat exchanger with a simple structure made of parts that can be formed by press working. The present invention is a microchannel heat exchanger 1, which has a cylindrical housing part 2 and a rectangular shaped heat exchange part 3 whose four corners are integrally connected to the inner periphery of the cylindrical housing part 2, the cylindrical housing part 2 being formed by the frame section 31 of the first plate unit 30 and the frame section 41 of the second plate unit 40, and the heat exchange part 3 is formed by the closing plate part 32 of the first plate unit 30 and the heat exchange fluid plate part 42 of the second plate unit 40.

A heat exchanger which may be used in an engine, such as a vehicle engine for an aircraft or orbital launch vehicle. is provided. The heat exchanger may be configured as generally drum-shaped with a multitude of spiral sections, each containing numerous small diameter tubes. The spiral sections may spiral inside one another. The heat exchanger may include a support structure with a plurality of mutually axially spaced hoop supports, and may incorporate an intermediate header. The heat exchanger may incorporate recycling of methanol or other antifreeze used to prevent blocking of the heat exchanger due to frost or ice formation.

A microfluidic thermalization chip, a system using such a chip and a PCR method for detecting DNA sequences. The chip contains a block of material in which a cavity is configured to contain at least one fluid. The cavity includes at least one inlet orifice and at least one outlet orifice. The inlet orifice for the fluid is connected to at least one, preferably at least two, fluid-injecting channels. Further, the chip includes at least one microfluidic channel for bypassing the cavity. The channel is connected by a first end to at least one of the fluid-injecting channels. The junction between the bypassing channel and the fluid-injecting channel is located at a distance L from the inlet orifice of the fluid-injecting channel. The distance L is preferably smaller than 2 cm.

A heat exchanger for receiving an airflow having an uneven intensity distribution across the heat exchanger and for flowing refrigerant within the heat exchanger. The heat exchanger includes sections of microchannel tubes for flowing refrigerant through at least one pass through the heat exchanger, wherein the sections are configured according to the airflow across the heat exchanger. The heat exchanger may be used in an HVAC system. A method may also be performed to manufacture the heat exchanger.

A microchannel evaporator includes a plurality of microchannels. Each of the plurality of microchannels includes a first end and a second end. A first end-tank is coupled to each first end of the plurality of microchannels and a second end-tank is coupled to each second end of the plurality of microchannels. A second-fluid inlet is coupled to either the first end-tank or the second end-tank and configured to receive a fluid into the microchannel evaporator and a second-fluid outlet is coupled to either the first end-tank or the second end-tank and configured to expel the fluid from the microchannel evaporator. Each microchannel of the plurality of microchannels includes at least one bend along a length thereof.

A system for selectively heating and cooling including a three-way heat exchange apparatus, a source apparatus for selectively heating and cooling a source fluid, a phase change material for selectively storing heating and cooling potential, and a distribution apparatus for selectively distributing heating and cooling a distribution fluid, wherein the three-way heat exchange apparatus is connected to the phase change material by an interface between the heat exchange apparatus and the phase change material.