A heat exchanger designed to be fixed to a turbomachine wall delimiting a gas flow stream, this exchanger including a body with a front face through which the gas flow passes; an attachment face to the wall; an external face opposite the attachment face and connected to the front face; two lateral faces connected to the front face; a cover surrounding the front face and extending along the prolongation of the external face and the lateral faces, to delimit an intake with an area smaller than the area of the front face, this intake being located upstream from the front face relative to the gas flow stream.

A vehicle heat exchange apparatus, including: a heat exchanger provided rearward of a front bumper formed with an air intake port, and having an air inlet member on a front face of the heat exchanger; and a duct member provided between the front bumper and the heat exchanger, and forming a passage for passing cooling air from the air intake port of the front bumper to the air inlet member of the heat exchanger, wherein the duct member has: a first intake port introducing air from a vehicle front side into the passage through the air intake port provided in the front bumper; a second intake port introducing air from a vehicle lower side into the passage; and an outlet port opened at an end portion of the passage and facing the air inlet member of the heat exchanger.

A vehicle heat exchange apparatus, including: a heat-exchanger provided rearward of a front-bumper formed with an air-intake-port, and having an air-inlet-member on a front-face of the heat-exchanger; and a passage-forming-member provided between the front-bumper and the heat-exchanger, and forming a passage for passing cooling-air from the air-intake-port of the front-bumper to the air-inlet-member of the heat-exchanger, wherein the heat-exchanger is provided inclined so that an upper-end-portion is positioned rearward of a lower-end-portion, the passage-forming-member has: a duct-member having: a top-member; a bottom-member facing the top-member; and a pair of side-members interconnecting the top-member and the bottom-member, and forming a part of the passage with a space enclosed by the top-member, the bottom-member and the pair of side-members; and a closing-member provided to close a gap between the top-member of the duct-member and the upper-end-portion of the heat-exchanger.

A cooler includes a heat-receiving block, multiple heat-dissipating members, and a channel definer. The heat-receiving block has a first main surface to which a heating element is attachable, and a second main surface opposite to the first main surface. The multiple heat-dissipating members are fixed to the second main surface with spaces therebetween. The multiple heat-dissipating members dissipate heat transferred from the heating element through the heat-receiving block to air flowing through the spaces. The channel definer covers the multiple heat-dissipating members and is fixed to the second main surface of the heat-receiving block. The channel definer defines a flow channel for the air flowing through the spaces between the multiple heat-dissipating members. The channel definer includes multiple vents for the air to flow into the flow channel and for the air drawn in the flow channel to flow out.

The invention relates to a heat exchanger assembly with at least one multi-pass heat exchanger, comprising a first distributor (1) with a first connection part (1a) for connecting to a fluid line (9), a second distributor (2) with a second connection part (2a) for connecting to a fluid line (9), and at least one first deflection distributor (4), as well as a plurality of tube lines (5) through which a fluid, in particular water, can flow, wherein the first distributor (1) and the second distributor (2) are arranged at one end (A) of the heat exchanger assembly, the deflection distributor (4) is arranged at the opposite end (B) and the tube lines (5) extend from the one end (A) to the opposite end (B), and wherein the first connection part (1a) is arranged at a lowest point (T) or at least near to the lowest point (T) of the first distributor (1) and the second connection piece (2a) is arranged at a lowest point (T) or at least near to the lowest point (T) of the second distributor (2). In order to allow for the heat exchanger assembly to be quickly filled with the fluid and quickly emptied, a third connection part (3) is arranged on the first distributor (1) and/or on the second distributor (2) at a highest point (H) or at least near to the highest point (H) of the respective distributor (1 or 2), and at least one ventilation opening (10) is provided at a highest point (T) or at least near to the highest point (T) of the deflection distributor (4) for pressure equalisation with the environment.

The invention relates to a guide vane for a twin-spool aircraft turbomachine, of which the aerodynamic part (32) comprises an internal lubricant cooling passage (50a) extending along a principal lubricant flow direction (52a).

According to the invention, the aerodynamic part is made in a single piece and also comprises heat transfer fins (80a, 80b) arranged in the passage (50a) connecting the intrados and extrados walls (70, 72) and extending approximately parallel to the direction (52a), these fins being distributed in successive rows along the principal direction (52a) and made such that for two rows (R1, R2) of staggered directly consecutive fins, the row (R1) comprises fins (80a) forming a positive acute angle A1 with a dummy reference plane (Pf), while the row (R2) comprises fins (80b) forming a negative acute angle A2 with this plane (Pf).

A method for manufacturing a heat exchanger, wherein a firmly bonded connection is provided between tubes and ribs in order to form a radiator matrix, the connection provided by aligning and inserting tube ends into openings in a first and second collector in order to connect tubes to the two collectors, and a wall section of shaped tube ends is bent so that the tube ends are fixed against the collector through the wall section with interpositioning of a seal.

A dry cooling system can include: a heat source flow duct; an air duct disposed over the heat source flow duct; an opening between the heat source flow duct and the air duct such that an air flows through the opening; and a heat pipe including an evaporator section disposed in the heat source flow duct and a condenser section disposed in the air duct. The air can flow from the opening to the condenser section.

A gas/liquid heat exchanger comprises a stack of flat tubes, defining liquid flow passages. Spaces between the flat tubes define gas flow passages, with the sides of the core having an irregular comb-like arrangement. The heat exchanger further comprises a housing having side covers over the sides of the core, and being spaced from the sides of the core. The core has at least one portion of reduced width, so as to provide channels extending throughout the height of the core. The heat exchanger further comprises a pair of side seals at least partly received in the gap between the side cover of the housing and the core, and more particularly in the channels along the sides of the core. The side seal extends throughout the height of the core and has a thickness which is greater than that of the gap.

A dual seated by-pass valve is provided for a surface heat exchanger. The valve provides a power element and at least two seats and two poppets which are spring biased and responsive to movement of the power element to open and close pathways to core cooling channels and de-congealing channels.