The invention relates to a manifold (10) for a heat exchanger (1), comprising a cover (31), an intermediary plate (41), and a collector plate (51), said manifold (10) being intended to collect and distribute a fluid. According to the invention, the intermediary plate (41) defines a first fluid chamber (11) with the cover (31) and a second fluid chamber (12) with the collector plate (51), said second chamber being independent of the first (11). The invention also relates to a heat exchanger (1) comprising such a manifold (10) and to a method for producing such a manifold (10).

A heat exchanger that effectively distributes a refrigerant by varying the cross-sectional area of a header and an air conditioner having the same. The heat exchanger includes a plurality of refrigerant tubes disposed spaced apart from each other, a header joined to both ends of each of the refrigerant tubes, at least one baffle to divide the refrigerant tubes into a plurality of mutually adjacent groups and block a longitudinal flow of a refrigerant flowing in the header, each of the groups causing the refrigerant to flow in one direction, and a booster installed to vary a cross-sectional area of the header to uniformly distribute the refrigerant to refrigerant tubes in the same group among the refrigerant tubes. The booster to vary the cross-sectional area of the header may allow a refrigerant flowing through a header to be effectively distributed to the refrigerant tubes.

A radiator for a vehicle is provided. The radiator includes a first header tank that has an inlet port formed at a first side thereof to allow a coolant to flow from an engine thereinto and an outlet port formed at a second side thereof to allow the coolant to flow to the engine. A second header tank is disposed apart from the first header tank. A heat-exchanging portion fluidly connects the inlet tank and the outlet tank and includes a plurality of tubes and radiation fins to cool the coolant flowing in the tubes by exchanging heat with air. A diaphragm unit is disposed at the inside of the first header tank to prevent the coolant which flows into the inlet port from being mixed with the coolant which is exhausted from the outlet port.

An air conditioning device 1A includes a support frame 21, a heat generating portion 22 having flow pipes for a flowable heating medium which are respectively laterally laid at an interval in an up-and-down direction across an intermediate region of the support frame and outer shell bodies covering the flow pipes, each showing a flat shape or elliptical shape as an outer shape of a cross-section of a peripheral wall, having a structure capable of dissipating to the outside heat transmitted from the flow pipe, and attached so that long axis directions perpendicular to a longitudinal direction are inclined in the same direction, a reflector 23 having a reflecting surface that reflects radiant heat from the heat generating portion and is not permeable to water, and disposed on the back side of the air conditioning device 1A and a gutter-shaped receiving portion 24 disposed under the reflector.

An apparatus and a method are provided for a modular intercooler block that may be fabricated by way of direct metal printing and assembled to form larger intercoolers. The modular intercooler block comprises cooling fins that are spaced between first and second core headers to allow passage of an airstream. Countersunk holes are arranged on the first and second core headers and configured to receive grommets when the first or second core header is fastened to another core header comprising similarly arranged countersunk holes. A core tube extends along an undulating path from each countersunk hole in the first core header, through the multiplicity of cooling fins, to a similar countersunk hole in the second core header. The core tubes may include thin copper walls and spiraled inner passages to enhance heat transfer to the airstream passing through the multiplicity of cooling fins.

Disclosed herein is a heat exchanger, and more particularly, a heat exchanger of an aluminum alloy material designed to have an electric potential difference between a tube of the heat exchanger and a heat exchanger fin. A heat exchanger according to one aspect of the present disclosure includes a tube through which a refrigerant flows, a heat exchanger fin coupled to a surface of the tube, and a filler that couples the tube and the heat exchanger fin, wherein the tube is formed of an aluminum alloy material that includes a rare-earth metal, and the heat exchanger fin and the filler may be formed of aluminum alloy materials that include silicon (Si), copper (Cu), and zinc (Zn).

An HVAC heat exchanger with an array of tubes including one or more dead tubes is provided. In one embodiment, the heat exchanger is a microchannel heat exchanger operable to exchange heat with air in an HVAC system via refrigerant passing through the microchannel heat exchanger. The microchannel heat exchanger includes an array of flat tubes arranged between a first manifold and a second manifold. The array of flat tubes includes multiple tubes coupled in fluid communication with the first manifold and the second manifold to convey refrigerant between the first manifold and the second manifold through microchannels of the multiple tubes. The array of flat tubes also includes one or more dead tubes that do not convey refrigerant between the first manifold and the second manifold. Additional systems, devices, and methods are also disclosed.

An HVAC heat exchanger with an array of tubes including one or more dead tubes is provided. In one embodiment, the heat exchanger is a microchannel heat exchanger operable to exchange heat with air in an HVAC system via refrigerant passing through the microchannel heat exchanger. The microchannel heat exchanger includes an array of flat tubes arranged between a first manifold and a second manifold. The array of flat tubes includes multiple tubes coupled in fluid communication with the first manifold and the second manifold to convey refrigerant between the first manifold and the second manifold through microchannels of the multiple tubes. The array of flat tubes also includes one or more dead tubes that do not convey refrigerant between the first manifold and the second manifold. Additional systems, devices, and methods are also disclosed.

This heat exchanger is equipped with: a first heat exchange unit having a first inlet/outlet unit which has one inlet/outlet port and through which a coolant flows, and also having a plurality of first heat transfer pipes, each of which has one end thereof connected to the first inlet/outlet unit; a header pipe which is connected to the other ends of the plurality of first heat transfer pipes; and a second heat exchange unit having a second inlet/outlet unit which has two or more inlet/outlet ports and through which a coolant flows, and also having a plurality of second heat transfer pipes, each of which has one end thereof connected to the header pipe and the other end thereof connected to the second inlet/outlet unit.

An air condenser for an organic Rankine cycle plants which includes a two-pitch tube bundle in which in the first pitch the condensation of the working fluid takes place up to a steam content in any case greater than zero and in the second pitch only the residual steam flow rate of the working fluid not condensed in the first pitch is condensed. The second pitch is inclined upwards and is provided with an opening for the extraction of incondensable gases. Preferably, the second pitch is located in a position above the first pitch on a position parallel to that of the first pitch. The innovative air condenser is particularly suitable for non-cogenerative organic Rankine cycle plants.