Flat-plate solar heat collector

Abstract

The invention discloses a flat-plate solar heat collector and aims to provide a flat-plate solar heat collector which has high heat efficiency and high heat preserving performance. The flat-plate solar heat collector comprises an outer frame, a transparent material plate and a heat insulating layer, wherein the transparent material plate is a transparent plate with a vacuum interlayer; a heat absorbing plate is arranged below the transparent material plate; the heat insulating layer is formed on the inner surface of the outer frame below the heat absorbing plate; and both sides of the outer frame are connected with a water inlet pipe and a water outlet pipe respectively. The transparent material plate has a structure provided with a vacuum layer, so that loss caused on air flow is reduced to zero; and the transparent material plate and the heat absorbing plate on a lower layer are equivalent to vacuum glass with a low-radiation film, so that good heat preserving and heat insulating effects are achieved on a system.

Description

technical field [0001] The invention relates to a solar heat collector, in particular to a flat plate solar heat collector. Background technique [0002] Solar flat panel collectors are the key components of solar water heaters. The structure of flat panel collectors widely used in the market is that the sun shines through a transparent material plate onto a heat absorber with a black absorbing coating, and after converting solar energy into heat energy, The heat is transferred to the water in the heat collecting channel in the frame. Judging from the structure of the current commercially available solar water heaters, the heat insulation performance of the transparent cover plate is poor, the temperature difference between the inner surface and the heat absorbing surface is large, and the radiation heat loss is also large. There is air inside, which will also transfer a certain amount of heat and cause losses. These two heat energy losses can account for more than 20% of th...

AI Technical Summary

Problems solved by technology

[0002] Solar flat panel collectors are the key components of solar water heaters. The structure of flat panel collectors widely used in the market is that the sun shines through a transparent material plate onto a heat absorber with a black absorbing coating, and after converting solar energy into heat energy, The heat is transferred to the water in the heat collecting channel in the frame. Judging from the structure of the current commercially available solar water heaters, the heat insulation performance of the transparent cover plate is poor, the temperature difference between the inner surface and the heat absorbing surface is large, and the radiation heat loss is also large. There is air inside, which will also transfer a certain amount of heat and cause losses. These two heat energy losses can account for more than 20% of the total radiant energy

Images