A pressure-resistant plate solar heat collector

Abstract

The invention relates to a solar energy comprehensive utilization technique, in particular to a pressure-resisting plate type solar heat collection device which is characterized in that a plate type heat exchanger which absorbs solar energy to form medium heat motion inner circulation is arranged in a box body, the plate type heat exchanger is formed by the fact that corrugated metal plates are overlaid, and the periphery sides of the metal plates are sealed in a brazing mode, the metal plates and the box body are arranged in a horizontal-paving mode, crossing points formed in a corrugated mode between adjacent metal plates are welded together and form corrugated channels which are communicated with each other, the corrugated channels are divided into medium channels and water channels, the medium channels and the water channels are arranged in parallel in a staggered mode, medium through holes communicated with the medium channels are arrayed in the metal plates, a diagonal line of each metal plate is provided with a water inlet pipe and a water outlet pipe respectively, the water inlet pipes and the water outlet pipes are communicated with the water channels, black heat absorption layers are arranged on the metal plates, corresponding to glass plates, of the plate type heat exchanger in a coating mode, the pressure-resisting plate type solar heat collection device has the advantages of being compact in structure, large in heat exchanging amount, convenient to mount and adjust and high in low-temperature heat exchanging efficiency, wind resistance is achieved, high temperature can be avoided, high temperature resistance and high pressure resistance are achieved, environment is protected, and energy is saved.

Description

technical field [0001] The invention relates to solar energy utilization technology, in particular to an energy-saving, environment-friendly, high-efficiency medium internal circulation pressure-resistant plate-type solar heat collection device. Background technique [0002] As we all know, solar collectors mainly include vacuum tube type and flat plate type. Now the widely used solar collectors use vacuum tube type solar collectors. Vacuum tube type solar collectors are composed of brackets, water tanks and vacuum heat collecting tubes. , The vacuum heat collecting tube is composed of two layers of glass tubes inside and outside. Vacuum is drawn between the inner and outer glass tubes, and the outer surface of the inner glass tube is coated with an absorbing layer. After the absorbing coating absorbs solar energy, the heat energy obtained is conducted to the water through the inner glass tube wall. After the water is heated, it becomes lighter and floats up to form a natur...

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Problems solved by technology

Evacuated tube solar collectors use vacuum thermal insulation to greatly suppress heat loss, but the existing products have a large outline area, low safety factor in use, and have the disadvantages of being difficult to be integrated with buildings; flat-plate solar collectors are the main It is composed of absorption heat transfer tube, cover body, water inlet header, water outlet header, water inlet pipe, water outlet pipe, etc. The main structure is in a two-dimensional plane shape, and the cover body is composed of thermal insulation material, back plate, frame, etc. The upper end surface of the cover is usually made of glass plates that are transparent to sunlight. There are absorption heat transfer tubes in the box. The absorption heat transfer tubes are composed of light energy absorption fins and heat transfer fluid pipelines. The shortcoming of the flat-plate heat collector of the tube is that the structure is complicated, and installation and maintenance are inconvenient. In addition, because the transparent upper cover and the heat-absorbing body of the existing flat-plate solar heat collector reflect the sun's rays, especially when the sun's rays The significant increase of this reflection when the incidence is oblique at a large angle causes the current flat-plate solar collectors to fail to fully utilize the solar energy and absorb heat insufficiently. The disadvantage of the hedging mechanism is that the structure is complex, the cost is high, and it is difficult to install it integrated with the building. It also brings great problems to the safety of the product and the beauty of the building.

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