A diffuser plate for a thermal transfer device can include a body having a number of first apertures and a second aperture that traverse therethrough, where the first apertures are asymmetrically arranged with respect to the second aperture. The first apertures can have a first shape and a first size, and where the first apertures are configured to receive a plurality of tubes. The second aperture has a second size, where the second size is larger than the first size.

A method is provided for passivating an aluminum surface. According to the method, the aluminum surface is provided with a flux. A passivation solution is subsequently applied to the aluminum surface, such that a passivation layer is created by reaction of the passivation solution with the aluminum surface, which is provided with the flux.

A heat exchanger, comprising: a top cover (2) which is provided with a top cavity (21); a liquid-collecting chamber (1) which is provided with a liquid-collecting cavity (11); a housing (3) which is provided with a receiving cavity (31), neither of the liquid-collecting cavity (11) nor the top cavity (21) being in connection with the receiving cavity (31); an upper tube plate (4); a lower tube plate (5); and a heat exchange tube (6) which sequentially passes through the top cavity (21), the upper tube plate (4), the receiving cavity (31), the lower tube plate (5), and the liquid-collecting cavity (11); the two ends of the heat exchange tube (6) are in connection with the liquid-collecting cavity (11) and the top cavity (21), respectively; sealing members (8) are provided between the outer circumference of the heat exchange tube (6) and the upper tube plate (4) and between the outer circumference of the heat exchange tube (6) and the lower tube plate (5). By means of the three-section structure consisting of the liquid-collecting chamber (1), the top cover (2), and the housing (3), and the structure of the heat exchange tube (6) respectively passing through the upper tube plate (4) and the lower tube plate (5) in a dismountable manner, the heat exchanger is easy to mount and dismount, easing the maintenance and cleaning of the heat exchanger; the heat exchanger can be used, in particular, in the heat exchange of a strongly corrosive medium under a high temperature, and has a compact structure and high heat exchange efficiency.

A heat exchanger, comprising: a top cover (2) which is provided with a top cavity (21); a liquid-collecting chamber (1) which is provided with a liquid-collecting cavity (11); a housing (3) which is provided with a receiving cavity (31), neither of the liquid-collecting cavity (11) nor the top cavity (21) being in connection with the receiving cavity (31); an upper tube plate (4); a lower tube plate (5); and a heat exchange tube (6) which sequentially passes through the top cavity (21), the upper tube plate (4), the receiving cavity (31), the lower tube plate (5), and the liquid-collecting cavity (11); the two ends of the heat exchange tube (6) are in connection with the liquid-collecting cavity (11) and the top cavity (21), respectively; sealing members (8) are provided between the outer circumference of the heat exchange tube (6) and the upper tube plate (4) and between the outer circumference of the heat exchange tube (6) and the lower tube plate (5). By means of the three-section structure consisting of the liquid-collecting chamber (1), the top cover (2), and the housing (3), and the structure of the heat exchange tube (6) respectively passing through the upper tube plate (4) and the lower tube plate (5) in a dismountable manner, the heat exchanger is easy to mount and dismount, easing the maintenance and cleaning of the heat exchanger; the heat exchanger can be used, in particular, in the heat exchange of a strongly corrosive medium under a high temperature, and has a compact structure and high heat exchange efficiency.

In one aspect, a transparent heat exchanger includes a first transparent substrate optically attached to a heat source, one or more fins to transfer heat from the heat source, the one or more fins comprising transparent material and further comprising one of a manifold coupled to the first transparent substrate or a facesheet coupled to the first transparent material.

Provided are a thermally conductive resin sheet having light transmission, including a cured product of a fiber cloth-containing thermally conductive resin composition prepared by thermally curing or semi-curing a laminate composed of five or more sheets of a prepreg made by impregnating a fiber cloth made of thermally conductive fibers as warp and white or transparent fibers as weft with a transparent curable resin composition, the cured product having a cut surface vertical to a length direction of the thermally conductive fibers, and a method for producing the thermally conductive resin sheet.

A window assembly heat transfer system is disclosed in which a window member has a selected transparency to monitored or sensed light wavelengths. One or more passages are provided in the window member for flowing a single-phase or two-phase heat transfer fluid, the passages being optically non-transparent to the monitored or sensed light wavelengths. A mechanism allows either evaporation or condensation of the fluid and/or balancing of a flow of the fluid within the passages. In one embodiment, the window assembly can be made by producing passages in a top surface of a first single plate, optionally producing passages in a bottom surface of a second single plate and bonding the top surface of the first plate to a bottom surface of a second single plate to form the window member with the passage or passages. In another embodiment, the window assembly can be made by providing a core around which the window member material is grown and thereafter removing the core to produce the passage or passages.

A window assembly heat transfer system is disclosed in which a window member has a selected transparency to monitored or sensed light wavelengths. One or more passages are provided in the window member for flowing a single-phase or two-phase heat transfer fluid, the passages being optically non-transparent to the monitored or sensed light wavelengths. A mechanism allows either evaporation or condensation of the fluid and/or balancing of a flow of the fluid within the passages. In one embodiment, the window assembly can be made by producing passages in a top surface of a first single plate, optionally producing passages in a bottom surface of a second single plate and bonding the top surface of the first plate to a bottom surface of a second single plate to form the window member with the passage or passages. In another embodiment, the window assembly can be made by providing a core around which the window member material is grown and thereafter removing the core to produce the passage or passages.

A window assembly heat transfer system is disclosed in which a window member has a selected transparency to monitored or sensed light wavelengths. One or more passages are provided in the window member for flowing a single-phase or two-phase heat transfer fluid, the passages being optically non-transparent to the monitored or sensed light wavelengths. A mechanism allows either evaporation or condensation of the fluid and/or balancing of a flow of the fluid within the passages. In one embodiment, the window assembly can be made by producing passages in a top surface of a first single plate, optionally producing passages in a bottom surface of a second single plate and bonding the top surface of the first plate to a bottom surface of a second single plate to form the window member with the passage or passages. In another embodiment, the window assembly can be made by providing a core around which the window member material is grown and thereafter removing the core to produce the passage or passages.

A tube bundle-type heat exchanger, to a tube base, and to a method for sealing same. Aspects of the invention relate to a tube base for a tube bundle-type heat exchanger. In particular, the tube base includes a stack of multiple tube base plates with at least one through-opening for receiving a respective tube of the tube bundle-type heat exchanger. The throughopening is sealed by at least one seal ring. Additional aspects relate to a tube bundle-type heat exchanger comprising such a tube base and to a method for sealing a tube bundle-type heat exchanger in particular in the region of the tube base.