A cooling system for a motor vehicle may include a first circuit, a second circuit, a first heat exchanger incorporated in the first circuit, and a second heat exchanger incorporated in the second circuit. The first heat exchanger and the second heat exchanger may be flowed through by ambient air and a coolant. The first heat exchanger may be arranged, relative to an airflow direction, in front of and directly adjacent to the second heat exchanger. The first circuit and the second circuit may be fluidically connected to one another at an upstream distribution point and at a downstream collection point such that a part mass flow of the coolant is flowable from the second circuit into the first circuit at the distribution point, from the first circuit into the first heat exchanger, and out of the first heat exchanger back into the second circuit at the collection point.

Systems and methods for providing a fin structure. The fin structure may be employed in a heat exchanger. The fin structure comprises: a support structure; and a plurality of fins disposed on the support structure via additive manufacturing so as to facilitate a change in direction of a fluid flowing through the fin structure. The fins comprise first fins that have centers arranged in accordance with a phyllotaxis or Fibonacci pattern.

A heat exchanger for a gas turbine engine includes a heat exchanger body having a first surface and a second surface oriented at least partially at an oblique angle relative to the first surface. The heat exchanger body defines a plenum extending between the first and second surfaces. Furthermore, the heat exchanger body defines a fluid passage extending through the second surface such that the fluid passage is in fluid communication with the plenum. The fluid passage, in turn, includes first and second portions. The first portion intersects the plenum at an intersection and defines a line of projection extending normal to the second surface. The second portion defines a line of projection extending normal to the first surface. The fluid passage further includes a curved portion extending from the first portion to the second portion.

A heat exchanger with a monocoque structure transfers heat between a first fluid and a second fluid. The heat exchanger has a plurality of tubes through which the first fluid may flow in a direction, each of the plurality of tubes has a first mouth end, an opposing second mouth end and a waist region between the first mouth end and the second mouth end. The heat exchanger also has one or more intercomlected fluid challllels through which the second fluid may flow. the one or more fluid chamlels lay generally in a plane, the plurality of tubes and the one or more fluid channels interleave such that heat may be transferred between the plurality of tubes and the one or more fluid challllels, and the direction of flow of the first fluid is generally perpendicular to the plane of the one or more fluid chamlels.

A cooling system including a first sheet steel item having a first surface configured to accommodate one or more objects to be cooled, and a second surface joined to a first surface of a second sheet steel item forming a shell. The items may be joined by a weld, a rivet or a plurality thereof. At least one of the second surface of the first sheet steel item and the first surface of the second sheet steel item may be formed to produce one or more conduits for forming one or more channels, whereby said joining forms said channels for coolant in a space between the second surface of the first sheet steel item and the first surface of the second sheet steel item.

A duct for a bleed system of an aircraft, wherein the duct extends from an inlet section to an outlet section along a longitudinal axis, and wherein the duct comprises a continuous piece arranged on and protruding from the internal wall of the duct. The duct is subject to temperature gradients in order to reduce the temperature of the warmest airflow closer to the inner wall rather than rapidly mix the airflow.

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.

A heat transfer device for transferring heat energy to or from a gas or fluid flowing radially across a plurality of posts or tubes includes a plate having a plate surface. A plurality of posts or tubes are disposed on and protrude substantially perpendicular to the plate surface. At least about 50% of the plurality of posts or tubes are disposed according to a phyllotaxis layout. Each arc of a plurality of phyllotaxis spiral arcs of the phyllotaxis layout terminates at different locations along an arc radius on the plate at a phyllotaxis arc termination radius less than a perimeter radius.

Provided herein are components for a fluid network modified for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs.

An ice making machine having a refrigeration system designed for hydrocarbon (HC) refrigerants, and particularly propane (R-290), that includes dual independent refrigeration systems and a unique evaporator assembly comprising of a single freeze plate attached to two cooling circuits. The serpentines are designed in an advantageous pattern that promotes efficiency by ensuring the even bridging of ice during freezing and minimizing unwanted melting during harvest by providing an even distribution of the heat load. The charge limitations imposed with flammable refrigerants would otherwise prevent large capacity ice maker from being properly charged with a single circuit. The ice making machine includes a single water circuit and control system to ensure the proper and efficient production of ice. Material cost is conserved as compared to a traditional dual system icemaker.