Closed-loop capillary pipe plate type solar heat collector

A technology of solar collectors and capillary tubes, applied in the direction of solar collectors, solar collectors using working fluid, solar thermal energy, etc., can solve the problems of inability to provide high-temperature hot water and steam for industrial applications, restrictions on popularization and application, and heat flux density Low-level problems, to achieve high thermal conductivity, improve heat collection performance, and increase the effect of heating temperature

CN101387451AInactive Publication Date: 2009-03-18DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-03-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a closed loop capillary flat plate type solar heat collector, which belongs to the field of solar heat collector. The solar heat collector is characterized in that the device comprises a header tube, a fin tube, capillary metal tubes, a graphite heat transfer layer, a metal frame, plate glass and an insulation layer; the inner diameter of each capillary metal tube is between 2 and 5 millimeters, and the capillary metal tubes are connected with the fin tube to form a closed pipe system. The capillary metal tubes are filled with a heat transfer medium; during work, after absorbing solar energy, the heat transfer medium forms a vapor and liquid alternated column, enters the fin tube along the capillary metal tubes, flows back to the capillary metal tubes after being cooled down and condensed by media outside the tube, and then absorbs solar energy again for vaporization; and the cycle is repeatedly carried out. The closed loop capillary flat plate type solar heat collector has the advantages that the oscillatory flow heat pipe effect caused by the closed loop capillary metal tubes increases the heat transfer rate of the heat collector; the graphite heat transfer layer facilitates the improvement of the heat collection performance of the heat collector; and the tube diameter of each capillary metal tube is small, thereby improving the bearing capacity of the heat collection tube.
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Description

technical field

[0001] The invention belongs to the field of solar heat collectors, and relates to a closed-loop capillary metal tube flat-plate solar heat collector, which uses a plurality of closed-loop metal capillaries to realize solar heat collection equipment with high pressure bearing capacity, high heat collection efficiency and good heat exchange performance. Background technique

[0002] Solar collectors are key equipment for various solar energy utilization systems. With the application and popularization of solar energy in our country, high temperature and high pressure solar collectors have become a new problem and technical goal in the field of solar energy development and utilization. Therefore, it is very necessary to develop solar energy with high pressure bearing capacity, high heat collection efficiency, and good thermal conductivity Heat collection technology. At present, there are two types of solar collectors: flat-plate collectors and vacuum tube coll...

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0017] The closed-loop capillary metal tube flat solar collector of the present invention is mainly composed of header tube 1, finned tube 3, capillary metal tube 5, graphite heat conducting layer 6, metal frame 7, flat glass 8, air layer 9 and insulation layer 10. . The capillary metal tube 5 is composed of copper or other metal tubes with an inner diameter of 2-5 mm; the finned tube 3 and the capillary metal tube 5 are welded to form a closed-loop pipeline; Single or multiple; the capillary metal tube 5 and the graphite heat conducting layer 6 constitute the substrate of the flat glass 8, and the substrate and the flat glass 8 are closely connected; the graphite heat conducting layer 6 is covered with an insulating layer 10; the finned tubes 3 are placed Inside the header tube 1; the cooling medium flows outside the finn...