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Zhu Lei - One of the best experts on this subject based on the ideXlab platform.

  • metal vacuum High Temperature Collector tube
    2013
    Co-Authors: Zhu Lei
    Abstract:

    The utility model relates to a metal vacuum High-Temperature Collector tube, which comprises a glass outer tube, a metal inner tube which penetrates through the glass outer tube, a corrugated pipe and a connecting flange, wherein two ends of the glass outer tube are respectively connected with the corrugated pipe in a sealing mode, the corrugated pipe is connected to the metal inner tube through the connecting flange in a sealing mode, and a vacuum cavity is formed among the glass outer tube, the corrugated pipe and the metal inner tube; and the metal vacuum High-Temperature Collector tube is characterized in that a heat insulation reflecting layer is coated on the glass outer tube and is provided with an incident window; the incident window is parallel to a central axis of the glass outer tube, extends from one end of the glass outer tube to the other end of the glass outer tube and has the width of 20 to 180 radian. Because the heat insulation reflecting layer is coated on the glass outer tube of the Collector tube, the thermal radiation emitted by the Collector tube in a High-Temperature state can be reflected back to the Collector tube and is subjected to secondary absorption, and the heat collecting Temperature of the Collector tube is effectively improved; and therefore, the quantity of the used Collector tubes in target heat energy collection design is reduced, the investment scale of a solar thermal collecting system is reduced, and the floor space is reduced.

Jiwei Hou - One of the best experts on this subject based on the ideXlab platform.

  • Study on Waste Heat-Driven Refrigeration System for Energy Saving and Fast Cooling of Dust Collector in Monocrystalline Silicon Manufacture
    'Frontiers Media SA', 2021
    Co-Authors: Jiwei Hou
    Abstract:

    Single-crystal silicon is key raw material in photovoltaic industry. In its manufacture, silicon monoxide dust, a byproduct, is collected under vacuum environment. To clean the dust Collector, air is recharged into the Collector, reacting with the dust and causing very High Temperature. Collector components may be damaged. It also takes several hours to cool down. In this paper, a cooling system based on ejection refrigeration cycle is proposed, which collects the reaction heat and simultaneously controls the Collector Temperature around 100°C. Then, it is driven by stored waste reaction heat and cools down the dust to a lower Temperature. The designed cooling system, employing a 9.7972 m2 fin-tube heat exchanger, can simultaneously meet the cooling load of four dust Collectors with 330L/S capacity. By a thermodynamic model established in this work, performance analysis is carried out. Generating Temperature around 73°C and evaporating Temperature around 6°C are recommended for system operation. Results also show the cooling system is able to provide 3270 kJ cooling energy that is needed by the Collector, for fast cooling down the dust no longer than 620 s. It is about 92% shorter than the time of current Collector, indicating the cooling system is effective and feasible