937 results about "Surface cooling" patented technology

The present invention provides cryotherapy treatment of dissections in a blood vessel of a patient. The present invention further provides cryotherapy treatment of side branch occlusion in a bifurcated blood vessel. One method for treating potential or existing dissections in a blood vessel comprises cooling the blood vessel to a temperature and for a time sufficient to remodel the blood vessel such that dissections of the blood vessel are reduced. Another method for treating side branch occlusion in a bifurcated blood vessel, the bifurcated blood vessel having a side branch and a main branch, the main branch having plaque disposed thereon, comprises cooling an inner surface of the main branch to a temperature and for a time sufficient to inhibit plaque shift from the main branch into the side branch.

A transition duct (40) for a gas turbine engine (10) incorporating a combination of cooling structures that provide active cooling in selected regions of the duct while avoiding cooling of highly stressed regions of the duct. In one embodiment, a panel (74) formed as part of the transition duct includes some subsurface cooling holes (92) that extend under a central portion of a stiffening rib (90) attached to the panel and some subsurface cooling holes (94) that have a truncated length so as to avoid extending under a rib end (45). Effusion cooling holes (88) used to cool a side subpanel (48) of the panel may have a distribution that reduces to zero approaching a double bend region (48) of the panel. An upstream subpanel (76) of the panel may be actively cooled only when the panel is located on an extrados of the transition duct.

A process and an apparatus for producing metallic glass which are capable of producing a bulk amorphous alloy of desired shape, in particular, a bulk amorphous alloy of desired final shape are provided. In the present invention, the molten metal at a temperature above the melting point is selectively cooled at a rate higher than the critical cooling rate, and the product comprises single amorphous phase which is free from the crystalline phase formed by the development of crystal nuclei through nonuniform nucleation. The present invention is capable of producing the bulk amorphous alloy which is free from casting defects such as cold shuts and which has excellent strength properties in a simple process at a high reproducibility. Accordingly, a bulk metallic glass of desired shape is produced by filling a metal material in a hearth; melting the metal material by using a high-energy heat source which is capable of melting the metal material; pressing the molten metal at a temperature above the melting point of the metal material to deform the molten metal into the desired shape by at least one of compressive stress and shear stress at a temperature above the melting point, while avoiding the surfaces of the molten metal cooled to a temperature below the melting point of the metal material from meeting with each other during the pressing; and cooling the molten metal at a cooling rate higher than the critical cooling rate of the metal material simultaneously with or after the deformation to produce the bulk metallic glass of desired form.

A stacked type cooler 1 for cooling a plurality of electronic components 6 from two surfaces of each component includes a plurality of cooling tubes 2 having a flat shape and coolant flow passage 21 for allowing a coolant to flow, and a connecting pipe 3 for communicating these cooling tubes 2. The plurality of cooling tubes 2 is arranged and stacked in such a fashion as to interpose the electronic components 6 between the cooling tubes. The plurality of cooling tubes 2 includes an outside cooling tube 2b and an inside cooling tube 2a. The inside cooling tube 2a includes at least a first coolant flow passage 211 facing a first tube wall 231 constituting a first main surface 221 of the inside cooling tube 2a and a second coolant flow passage 212 facing a second tube wall 232 constituting a second main surface 222 on the opposite side to the first main surface 221. The coolant flow passage 21 is formed into two or more stages in a direction of thickness of the inside cooling tube 2a.

A system and method for processing a matrix fluid to remove one or more impurities (such as moisture from a process gas). The purifier includes a pre-cooler that receives the matrix fluid and cools the matrix fluid to a second, lower temperature. A container is provided to contain a purifier element made up of a high surface area material. The container includes an inlet for receiving the matrix fluid from the pre-cooler and an outlet for outputting the matrix fluid after it is forced to flow through the purifier element. The purifier includes a cooler in thermal contact with an outer surface of the container to cool the outer surface of the container to a purifying temperature, which is selected to be below the ambient temperature and above a phase change point of the matrix fluid and is typically in the range of about 0 to −200° C.

A metered cooling slot disposed in a wall comprising an outer surface that is exposed to a hot gas stream and an inner surface that defines an internal coolant chamber through which a coolant passes, the metered cooling slot comprising: a slot formed within the outer surface elongated in a first direction, the slot comprising a pair of spaced apart, opposing, slot surfaces and a base, the slot surfaces intersecting the outer surface to form a slot outlet opposite the base; and two or more metering apertures formed within the wall, each metering aperture intersecting the inner surface of the wall to form a metering aperture inlet and intersecting one of the pair of slot surfaces to form a metering aperture outlet; wherein: D represents the approximate diameter of at least two of the metering apertures; P represents the approximate distance between the center lines of at least two neighboring metering apertures; and P / D comprises a value within the range of about 4 to 6.