Superthin superconducting-type heat absorbing plate core and flat-plate solar collector

Abstract

The invention discloses a novel superthin superconducting-type heat absorbing plate core and a flat-plate solar collector. The flat-plate solar collector is creatively characterized by comprising the heat absorbing plate core based on a corrugated metal thin plate structure, a superconducting mixed heat-transfer working medium, a transparent cover plate, a heat-insulating material layer and a frame. The flat-plate solar collector has the advantages of being compact in structure, high in heat-transfer efficiency, small in pressure loss, light in weight, flexible to mount, high in pressure-bearing capacity, antifreezing, resistant to scaling, corrosion-resistant, long in service life, low in cost and the like, and is quite suitable for being combined with a building. A mixed superconducting heating medium is adopted as a heat-transfer working condition, so that the flat-plate solar collector still can normally run at low temperature, heat utilization efficiency of the flat-plate solar collector is greatly improved, using range of the flat-plate solar collector are greatly expanded, application path of the flat-plate solar collector is widened, and the flat-plate solar collector is widely suitable for solar collection places like civil buildings and industrial workshops.

Description

technical field [0001] The invention belongs to the technical field of medium and low temperature solar heat collection, and in particular relates to a novel ultra-thin superconducting heat-absorbing plate core and a flat-plate solar heat collector. Background technique [0002] Flat-plate solar collectors have been widely used in domestic water heating, swimming pool heating, industrial water heating, building heating and air conditioning and many other fields. The flat-plate solar collector is mainly composed of transparent cover plate, heat-absorbing plate core, heat insulation layer and shell frame, among which the plate-type heat-absorbing plate core is the core component of solar heat utilization. [0003] When the flat-plate solar collector is working, the solar radiation passes through the transparent cover and is projected on the heat-absorbing plate core, which is absorbed by the heat-absorbing plate core and converted into heat energy, and then the heat is transfe...

AI Technical Summary

Problems solved by technology

Disadvantages: The welding process is difficult, and it is prone to problems of welding penetration or welding; the pressure resistance is poor, and the solder joints cannot withstand high pressure; the dynamic characteristics are poor, the cross-section of the fluid channel is large, and the heat-absorbing plate has a large heat capacity, large temperature rise

Disadvantages: large contact thermal resistance, low heat conduction efficiency of fins; uneven temperature distribution of plate core along the flow direction of working fluid; large flow resistance and large flow pressure loss of series flow channels; difficult curve welding process

[0009] The core of flat-panel solar collectors usually uses water or acetone as the heat transfer medium. Problems such as its easy freezing and poor operating efficiency at low temperatures have long existed in the solar water heater industry. This technical defect has always hindered the development of flat-panel solar collectors. Heaters are used in winter in temperate regions and in some severe cold regions. Therefore, it is imperative to develop a heat-absorbing plate core and flat-plate solar collector with simple and compact structure, high heat transfer efficiency, small pressure loss, and excellent low-temperature operation performance. Row

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