A sensor apparatus includes a sensor having a field of view, a sensor window through which the field of view extends; an air nozzle positioned to direct airflow across the sensor window; a surface fixed relative to the sensor window, the surface including a plurality of heat-dissipation fins; and a cover extending over the fins and including an inlet. The inlet is positioned at an opposite edge of the sensor window from the air nozzle. The air nozzle is aimed at the inlet.

A variable fin stack for cooling components in a chassis of a portable information handling system. The variable fin stack comprises a first array of fins coupled to a first conduit and a second array of fins coupled to a second conduit. When the chassis is in a compact configuration for use in a mobile mode, fins in the second array of fins are positioned between fins in the first array of fins and the chassis maintains a form factor. When the chassis is in an expanded configuration for use in a workstation mode, the second array of fins is withdrawn from the first array of fins and the increased surface area provides increased cooling of components operating at higher power levels.

A variable fin stack for cooling components in a chassis of a portable information handling system. The variable fin stack comprises a first array of fins coupled to a first conduit and a second array of fins coupled to a second conduit. When the chassis is in a compact configuration for use in a mobile mode, fins in the second array of fins are positioned between fins in the first array of fins and the chassis maintains a form factor. When the chassis is in an expanded configuration for use in a workstation mode, the second array of fins is withdrawn from the first array of fins and the increased surface area provides increased cooling of components operating at higher power levels.

Apparatus and methods for jet impingement cooling are provided. In one arrangement, a fluid channelling structure engages against a target surface to define a flow volume. Fluid is jetted onto the target surface from inlets and is removed via outlets. Flow directing features form a plurality of channels with no straight paths between inlets and outlets. A time averaged flow direction of fluid in contact with each flow directing feature is more nearly perpendicular to a direction of jetting of the fluid from a nearest inlet than parallel to the direction of jetting One or more pairs of the inlets and outlets are such that a majority of fluid jetted onto the target surface from the inlet of the pair will be removed from the flow volume through the outlet of the same pair.

A display assembly includes a housing which at least partially encloses an image assembly. A cover positioned forward of, and spaced apart from, the image assembly forms at least a portion of a forward surface of the housing and permits viewing of images displayed at the image assembly therethrough. A fan assembly moves air through an airflow pathway within the housing which includes a front channel between the cover and the image assembly and a rear chamber behind the image assembly. One or more solar energy reduction layers are associated with the cover and prevent at least some ambient sunlight striking the cover from traveling therebeyond.

A heat exchanger includes first fluid passages that each have a first inlet that communicates into a first core passage and then a first outlet. The first inlet has a first inlet cross-sectional perimeter. The first core passage has a first core cross-sectional perimeter. Second fluid passages are interleaved with the first fluid passages. Each of the second passages have a second inlet that communicates into a second core passage and then a second outlet. The second inlet has a second inlet cross-sectional perimeter. The second core passage has a second core cross-sectional perimeter. The first and second core cross-sectional perimeters are larger than their respective first and second inlet cross-sectional perimeters. The first and second core passages are undivided from their respective first and second inlets to their respective first and second outlets.

A heat exchanger includes first fluid passages that each have a first inlet that communicates into a first core passage and then a first outlet. The first inlet has a first inlet cross-sectional perimeter. The first core passage has a first core cross-sectional perimeter. Second fluid passages are interleaved with the first fluid passages. Each of the second passages have a second inlet that communicates into a second core passage and then a second outlet. The second inlet has a second inlet cross-sectional perimeter. The second core passage has a second core cross-sectional perimeter. The first and second core cross-sectional perimeters are larger than their respective first and second inlet cross-sectional perimeters. The first and second core passages are undivided from their respective first and second inlets to their respective first and second outlets.

Embodiments of heat spreaders with integrated preforms, and related devices and methods, are disclosed herein. In some embodiments, a heat spreader may include: a frame formed of a metal material, wherein the metal material is a zinc alloy or an aluminum alloy; a preform secured in the frame, wherein the preform has a thermal conductivity higher than a thermal conductivity of the metal material; and a recess having at least one sidewall formed by the frame. The metal material may have an equiaxed grain structure. In some embodiments, the equiaxed grain structure may be formed by squeeze-casting or rheocasting the metal material.

Embodiments of heat spreaders with integrated preforms, and related devices and methods, are disclosed herein. In some embodiments, a heat spreader may include: a frame formed of a metal material, wherein the metal material is a zinc alloy or an aluminum alloy; a preform secured in the frame, wherein the preform has a thermal conductivity higher than a thermal conductivity of the metal material; and a recess having at least one sidewall formed by the frame. The metal material may have an equiaxed grain structure. In some embodiments, the equiaxed grain structure may be formed by squeeze-casting or rheocasting the metal material.

The invention relates to a heat exchanger unit for an exhaust gas system. The heat exchanger unit comprises an inlet for a fluid flow to enter the heat exchanger unit and an outlet for a fluid flow to exit the heat exchanger unit. The heat exchanger unit comprises a heat exchanger having a heat exchanger conduit passing through the heat exchanger and at least one bypass conduit bypassing the heat exchanger, wherein the at least one bypass conduit comprises a bypass core having a plurality of channels arranged longitudinally along the bypass conduit.