Solar vacuum flat plate collector

Abstract

The invention provides a solar vacuum flat plate collector. The solar vacuum flat plate collector comprises a heat insulation box and an absorber plate core arranged in the heat insulation box, wherein the heat insulation box comprises a box body and a box cover which are both made of glass; a plurality of point-like bulges, a pipe-in hole and a pipe-out hole are formed in the bottom surface of the box body; the box cover is sheet glass, and the same point-like bulges are formed on the lower surface of the box cover; the absorber plate core is made of a metal material, a heat absorption runner is arranged in the absorber plate core, an inlet pipe nozzle is arranged at one end of the runner, an outlet pipe nozzle is arranged at the other end of the runner, the absorber plate core is arranged in the box body, and the inlet pipe nozzle and the outlet pipe nozzle penetrate the pipe-in hole and the pipe-out hole correspondingly; and the box cover is closed to seal a box gap, air in the box body is pumped out, and an air pumping hole is sealed to enable the absorber plate core to be a vacuum heat insulating layer in all directions. Therefore, the working temperature of a heat collector can be higher than 120 DEG C, steam of 100 DEG C or above can be produced, and the heat collector and an electric steam boiler can complement for each other to enable solar energy to become a stable industrial energy, and application of the flat plate collector is greatly expanded.

Description

technical field [0001] The invention belongs to the field of solar energy application, in particular to a solar vacuum flat plate heat collector. Background technique [0002] The existing solar flat panel heat collector has only one layer of glass on the surface of the plate core, and the space between the glass and the plate core is filled with air, which is a layer of air layer. Because the air in the air layer is heated to generate convection, the heat energy absorbed by the plate core is continuously transferred to With glass, the heat is continuously dissipated in the atmosphere along the glass surface. The larger the heat-absorbing surface, the larger the heat-dissipating surface. The higher the temperature of the plate core, the more heat dissipation, which seriously restricts the maximum collector The hot temperature prevents the flat plate heat collector from producing steam to enter the industrial application field and becomes an industrial energy source. It can o...

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Problems solved by technology

[0002] The existing solar flat panel heat collector has only one layer of glass on the surface of the plate core, and the space between the glass and the plate core is filled with air, which is a layer of air layer. Because the air in the air layer is heated to generate convection, the heat energy absorbed by the plate core is continuously transferred to With glass, the heat is continuously dissipated in the atmosphere along the glass surface. The larger the heat-absorbing surface, the larger the heat-dissipating surface. The higher the temperature of the plate core, the more heat dissipation, which seriously restricts the maximum collector The hot temperature prevents the flat plate collector from producing steam to enter the industrial application field, and becomes an industrial energy source. It can only produce hot water and can only be used in the low temperature field, which greatly limits the use of the flat plate collector. Therefore, it needs to be improved.

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