摘要:
An apparatus includes a heat exchanger configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The heat exchanger includes at least one section having a substrate of at least one allotropic form of carbon and a layer of nanoparticles on or over the substrate. The heat exchanger could include multiple sections, and each section could include one of multiple substrates and one of multiple layers of nanoparticles. The heat exchanger can further include pores through the multiple sections of the heat exchanger, where the pores are configured to allow the fluid to flow through the heat exchanger and to contact the substrates and the layers of nanoparticles. The nanoparticles could include at least one lanthanide element or alloy, and the substrate could include carbon nanotubes or graphene.
摘要:
A product having a functional layer and a method for fabricating the same. A method for fabricating a product having a functional layer includes the step of conducting a plasma reaction with titanium and silicon prescursor compounds to form a coating on a substrate, such as a heat exchanger surface.
摘要:
A heat storage system is provided that comprises a heat storage material having a higher specific gravity in a solid phase than in a liquid phase; a heat storage tank for containing the heat storage material; a cooling side heat exchanger arranged at an upper section inside the heat storage tank and for cooling the heat storage material; a heating side heat exchanger arranged at a lower section inside the heat storage tank and for heating the heat storage material; a wall surface heater for heating a side wall of the heat storage tank; and a solid phase exfoliation unit for allowing the heat storage material, which is cooled by the cooling side heat exchanger and becomes the solid phase, to exfoliate from the cooling side heat exchanger, wherein the solid phase exfoliation unit comprises a solid piece which is added to the heat storage material for colliding with the cooling side heat exchanger due to a flow of the heat storage material in the liquid phase, and allowing the heat storage material, which becomes the solid phase, to exfoliate from the cooling side heat exchanger.
摘要:
A heat exchanger management system and a method of operating the heat exchanger management system. In one embodiment, the heat exchanger management system includes a memory and an electronic processor electrically connected to the memory and configured to operate one or more burners to transmit heat to a heat exchanger for a first period of time that deposits corrosive condensates on a passivation layer of the heat exchanger, deactivate the one or more burners for a second period of time, operate one or more blowers to move air across the heat exchanger at a temperature that evaporates the corrosive condensates on the passivation layer of the heat exchanger and increases an oxide thickness of the passivation layer on the heat exchanger, and reactivate the one or more burners after the second period of time.
摘要:
This heat receiving tile formed of CFC is provided with a heat receiving block formed of a carbon fiber composite material and having a through hole, a cooling pipe inserted through the through hole of the heat receiving block, a buffer material provided to an outer periphery of the cooling pipe, a first brazing portion joining an inner surface of the through hole with an outer surface of the buffer material, a second brazing portion joining an inner surface of the buffer material with an outer surface of the cooling pipe, and a material discontinuous portion extending from a heat receiving surface of the heat receiving block up to the outer surface of the cooling pipe over a full length of the heat receiving block in an axis direction of the through hole. The heat receiving tile formed of CFC, which does not include a defect to decline a cooling efficiency such as a peeling between members configuring the heat receiving tile and a crack of the members, can be provided.
摘要:
The invention relates to a device for cleaning an industrial heat exchanger, in particular a water-cooled power station capacitor that can also be used as a plasma reactor. The invention makes it possible for the first time to cost-effectively and optimally prepare for coating, especially clean, the inner surfaces of industrial heat exchangers immediately before coating same because a plasma without any precursor is used for cleaning.
摘要:
A method of regenerating a hydrophobic coating 62 on a heat exchanger 34 includes exposing the hydrophobic coating 62 to a temperature within a range of about fifty to one-hundred-and-fifty degrees Celsius. The heat exchanger 34 may further be an evaporator 34 used in a refrigeration system 20 wherein a plurality of fins 54 of the evaporator 34 coated with the hydrophobic coating 62 is heated. Through heating, a molecular structure of the hydrophobic coating 62 may be reorganized thus regenerating anti-frost features attributed by the hydrophobic coating 62.
摘要:
The invention concerns a condenser arrangement (1) for an air conditioning system, with at least one pipe wall (3) made of metal, more particularly aluminium, and with a protective layer (5) that is provided on the pipe wall (3) and contains 40-90 mass % zinc oxide (ZnO).