Simple solar thermal collector and method for manufacturing same

Abstract

Disclosed is a solar thermal collector. By the solar thermal collector, solar radiation energy absorbed in a non-vacuum state can be directly utilized for heating water until the water is boiling, and steam can be generated. The solar thermal collector is characterized in that a thermal collecting body which comprises double-layer non-vacuum thermal collecting tubes, water tubes and the like is placed into a heat-insulation tank, anti-radiation materials and an absorber are laid on the heat-insulation tank, and a cover plate of the heat-insulation tank comprises double-layer toughened glass and foam strips. When sunlight irradiates on the absorber in the heat-insulation tank and thermal absorbing coatings on outer walls of inner tubes via the double-layer glass and outer glass tubes of the thermal collecting tubes, the absorber and the thermal absorbing coatings which are thermal absorbing substrates jointly absorb the sunlight, light energy is converted into heat energy, a part of the generated heat energy is dissipated via the cover plate, the remaining heat energy is absorbed by the water in the thermal collecting tubes, so that the temperature of the water is increased to reach the boiling temperature, the water is boiling, and the steam is generated. The simple solar thermal collector has the advantages that the simple solar thermal collector is mainly used in all places with requirements on supplying hot water all the year round, supplying heat by the aid of floor heaters, heating for agricultural greenhouses, processing food, generating power, refrigerating in summers, heating by the aid of biogas digesters, and the like.

Description

Technical field [0001] The invention relates to a flat solar heat collector, in particular to a heat collector, a heat absorber, an incubator and a cover plate of the flat solar heat collector. Background technique [0002] Currently known solar collectors only have vacuum tube solar collectors that can heat water to boiling to generate steam, while non-vacuum flat-plate solar collectors cannot directly heat water to boiling to generate steam. [0003] The original design scheme that the present invention adopts is: I am a farmer. I planned to make a plastic greenhouse as a fermentation room, so I did two experiments. The first experiment: I know the reason why black objects absorb sunlight and convert it into heat, so I put a slightly larger white transparent plastic bag on the outside of a smaller black plastic bag, and inflate both bags so that there is a certain gap between the two bags. Then insert the thermometer into the black plastic bag and tie the bag tightly, ha...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing non-vacuum flat-plate solar collectors that cannot directly heat water to boil to generate steam, the present invention provides a flat-plate solar collector that can directly heat water even in a non-vacuum state When it boils to generate steam, if it is covered with vacuum glass, this kind of solar collector can produce more steam.

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