摘要:
In a heat exchanger used especially as an exhaust heat exchanger, provision is made for tube sheets, the tubes of a tube bundle, and a housing to be shaped from stainless steel sheets. The tube sheets are formed as deep-drawn and stamped parts, each of which has a circumferential wall that projects outward beyond the ends of the tubes in the tube bundle. The walls are welded to the housing, and each of the walls is abutted by a diffuser.
摘要:
An apparatus for feeding an elongate article (6) from a floating vessel and suspending a first portion (6a) of the elongate article in a body of water below the vessel, comprises a cylindrical body (10) rotatably supported on the vessel and driving means (85, 86) for controlling the rotation of the cylindrical body. The cylindrical body (10) further comprises a spooling-on region (P) and a spooling-off region (U) for the elongate article, and a cylindrical contacting surface (18) for interaction with at least a portion of the elongate article (6); the contacting surface (18) being configured so as to support the first portion (6a).
摘要:
An apparatus for feeding an elongate article (6) from a floating vessel and suspending a first portion (6a) of the elongate article in a body of water below the vessel, comprises a cylindrical body (10) rotatably supported on the vessel and driving means (85, 86) for controlling the rotation of the cylindrical body. The cylindrical body (10) further comprises a spooling-on region (P) and a spooling-off region (U) for the elongate article, and a cylindrical contacting surface (18) for interaction with at least a portion of the elongate article (6); the contacting surface (18) being configured so as to support the first portion (6a).
摘要:
Carbon nanotube-based structures and methods for removing heat from solid-state devices are disclosed. In one embodiment, a copper substrate has thermal interface materials on top of front and back surfaces of the copper substrate. Each thermal interface material (TIM) comprises a layer of carbon nanotubes and a filler material located between the carbon nanotubes. The summation of the thermal resistance of the copper substrate, the bulk thermal resistance of each TIM, the contact resistance between each TIM and the copper substrate, the contact resistance between one TIM and a solid-state device, and the contact resistance between the other TIM and a heat conducting surface has a value of 0.06 cm2K/W or less.
摘要:
A dual collimation deposition apparatus and method are disclosed in which the dual collimation apparatus includes at least a long-throw collimator in combination with one or more physical collimators. A new physical collimator and shield design are also disclosed for improved process uniformity and increased equipment productivity.
摘要:
One aspect of the invention includes a copper substrate; a catalyst on top of the copper substrate surface; and a thermal interface material that comprises a layer containing carbon nanotubes that contacts the catalyst. The carbon nanotubes are oriented substantially perpendicular to the surface of the copper substrate. A Raman spectrum of the layer containing carbon nanotubes has a D peak at ˜1350 cm−1 with an intensity ID, a G peak at ˜1585 cm−1 with an intensity IG, and an intensity ratio ID/IG of less than 0.7 at a laser excitation wavelength of 514 nm. The thermal interface material has: a bulk thermal resistance, a contact resistance at an interface between the thermal interface material and the copper substrate, and a contact resistance at an interface between the thermal interface material and a solid-state device. A summation of these resistances has a value of 0.06 cm2K/W or less.
摘要:
Scroll wheels have simplified the movement of cursors and changes in focus as a users navigate their way through menus, lists, tables, and other objects typically found in graphical user interfaces. Also typical of navigation schemes driven by scroll wheels is the ability of the user to accelerate the rate of movement of the cursor or focus by spinning the scroll wheel faster. One issue with this behavior is that a user who over accelerates the scroll wheel will often wind up overshooting his intended target and reversing the direction of the scroll wheel several times. The embodiment addresses this problem by giving control of the speed of the cursor or focus movement to the object being navigated. If the granularity of the list, table, menu, or other objects become smaller, the object has the ability to filter the speed input of the scroll wheel.