WO2014029256A1

WO2014029256A1 - Refractive concentrating flat plate solar thermal collector

Info

Publication number: WO2014029256A1
Application number: PCT/CN2013/080247
Authority: WO
Inventors: 陈鼎凌
Original assignee: Chen Dinglin
Priority date: 2012-08-22
Filing date: 2013-07-27
Publication date: 2014-02-27
Also published as: CN103629826A

Abstract

A refractive concentrating flat plate solar thermal collector belongs to the field of medium and high temperature solar applications. Sunlight (1) is connected by a huge line-focus Fresnel lens (2), so as to improve the energy flux density of the sunlight and generate a high temperature at a focal line; heat is collected efficiently by evacuated solar collector tubes (7, 8, 9), and high-temperature heat energy is exchanged and led out by feeding a heat-conducting medium into a U-shaped metal tube (12), so as to provide a high-temperature heat source for domestic and industrial fields such as heating, air conditioning, textile, printing and dyeing, papermaking, rubber, sea water desalination, and sewage purification. An array of a plurality of the refractive concentrating flat plate solar thermal collectors can form a high-power solar steam boiler, which can be used for power generating of a heat generator set.

Description

Refractive concentrating plate solar collector

Technical field

The invention relates to a refracting concentrating plate solar collector, belonging to the middle and high temperature application fields of solar energy, concentrating sunlight to increase its energy flow density, generating high temperature on the focal line, and passing the existing vacuum heat collecting tube. The heat is efficiently collected, exchanged and exported to provide a green high-temperature heat source for living and industrial fields such as heating, air conditioning, textile, printing and dyeing, paper making, rubber, seawater desalination, and sewage purification. Background technique

For a long time, in the practice of solar energy application, human beings immersed in the original acquisition mode of 1:1, it is difficult to break through the limitation of solar natural energy flow density, and the energy per unit area is limited. Therefore, the efficiency of various types of solar collectors is not High, the scope of application is not wide, the input-output ratio of equipment is low, and the products of light and heat applications are piled up in the low temperature field below 80 °C, which is difficult to break through. Therefore, the high-magnification acquisition ratio of concentrating solar energy application technology has attracted more and more attention. At present, people's optimistic concentrating technology can be divided into two categories: "reflecting concentrating" and "refracting concentrating". The former has many engineering practices, while the latter is in practice, the refracting concentrating flat solar collector of the present invention The latter is the application of the latter.

Reflective concentrating equipment can obtain high temperature above 300 °C, can be used in more than 95% of industrial fields, and can be used for solar thermal power generation. Therefore, it has been applied very early. However, the reflective concentrator is a "front focus" type optical convergence system, and its focus or focal line is between the device and the light source (the focus is at the front end of the concentrator), so that the collector needs to be "hanged". Make set The structural difficulty of the heat exchanger is increased, and the heat collector is inconvenient to keep warm. Therefore, the cost and volume of the reflective concentrator are difficult to maintain, and the cost performance is not high. For a long time, its application has only stayed in large-scale demonstration projects of various governments, and the use of small areas is not worth the loss.

The research direction of refracting concentrating technology is mainly concentrated on the Fresnel lens. Fresnel lens is a light and thin flat lens lens, which belongs to the field of microstructured optical film technology. According to the type of focal spot, it can be divided into two types: point focus and line focus, but they all belong to the "back focus" type concentrator. The advantage is that the focus or focal line is behind the light source and the lens, which gives the collector The implementation of the setup and insulation measures is very convenient.

Thanks to its light and thin advantages, its support structure and tracking system can be made simple, lightweight, easy to implement, and cost-effective. At the same time, it is also convenient to miniaturize and lighten the equipment, that is, it can be combined into a large-scale array for large-scale industrial use or centralized heating and power supply, and can be made into a smaller system, which is convenient for household or dispersed users to heat nearby. , power supply, is expected to be an ideal solar collector. Summary of the invention

The object of the present invention is to provide an efficient, durable, economical and convenient flat-type refractive concentrating plate solar collector for solar high-temperature applications based on the technology of a giant Fresnel line concentrating lens for high temperature and high energy flow. The new energy of density is provided to the subsequent living facilities and industrial equipment, so that solar energy can be effectively applied.

The object of the invention is achieved by the following technical solutions:

The refracting concentrating plate solar collector of the present invention is composed of a concentrator, a heat collector, a heat exchanger and an outer frame. The concentrator is a giant Fresnel line focal concentrating lens sheet, single The area of the sheet is in square meters, and there are a plurality of independent optical converging units. Each optical converging unit is composed of a plurality of "microprism elements", which can converge the parallel light on a focal line and are separated by a plurality of independent optical beams. The unit forms a plurality of such high-temperature focal lines; a solar vacuum tube is installed on each focal line, and the excellent thermodynamic characteristics of the "high absorption ratio, low emission ratio" of the internal coating and the good thermal insulation effect of the vacuum layer are utilized. The heat on the high-temperature coke line is efficiently collected; the heat collected by the solar vacuum tube is transferred to the water or other type of heat-conducting fluid through the heat-conducting aluminum wing and the "U"-shaped metal tube heat exchanger attached to the inner wall; The liquid is exported to various types of heat equipment to achieve the purpose of converting low-temperature, low-energy solar energy into a high-temperature heat source. Advantages of the invention:

Taking full advantage of the optical convergence of the line focal Fresnel concentrating lens, the high energy flow density generated by the wire is introduced into the traditional "high absorption ratio, low emission ratio, good thermal insulation characteristics" glass vacuum tube, and then energy The "U"-type metal tube heat exchanger that withstands high temperature and high pressure derives all the heat; it has formed an unprecedented "high temperature, high efficiency, pressure, non-explosive, easy to clean" characteristics. If the above components are separated and analyzed independently, the components such as "Fresnel lens", "solar vacuum tube", and type 1 metal tube heat exchanger are all ready-made and extremely common products, but after they are combined, The resultant force produces a qualitative leap, forming a good example of sub-integration technology; the following joint schematic diagram is illustrated: Figure 4 to Figure 10 is a cross-sectional view of the solar vacuum tube, Figure 4 is the thermal conductive aluminum wing 10 and "U""Sectional view of the metal tube 12; in the figure, parallel light (sunlight) 1, line focal Fresnel lens 2, transparent outer tube 7, vacuum chamber 8, coated inner tube 9, thermally conductive aluminum wing 10, converging light (refracted light) 11. "U" type metal tube 12. High temperature: As shown in Fig. 5, due to the advantage of the "back focus" of the line focus Fresnel condenser lens, the solar vacuum tube can be placed behind the line focal length lens 2, collecting heat energy on its focal line, sunlight 1 is not obscured before convergence, and the sunlight 1 on the same width as the Fresnel condenser lens is aggregated into a "narrow focal zone" and all projected onto the absorption surface of the coated inner tube 9 of the solar vacuum tube. Therefore, it can produce high-temperature heat energy proportional to its concentration ratio; the concentration ratio shown in Figure 5 is a/b, obviously a>>b, therefore, the obtained temperature is much larger than the projection temperature of natural light; Previously, ordinary solar vacuum tube water heater The heating temperature is always used for living baths below 80 ° C, and the refracting concentrating flat solar collector of the present invention can provide heat energy of 80 to 250 ° C, and has broad industrial application prospects. Efficient: This problem needs to be analyzed by the principle analysis in Fig. 4 to Fig. 10; Fig. 6 is an optical path diagram of the incident ray R1 perpendicularly incident along the center position Q1 of the solar vacuum tube and pointing to the center 01, as can be seen from Fig. 6, R1 is perpendicular to the tangent q1 at point Q1. It is known by geometric optics that R1 has only a very small amount of reflection at point Q1, and no refraction occurs. Almost all light can be projected through the transparent outer tube 7 into the coating. On the absorbing surface of the tube 9, this incident ray has the highest projection efficiency perpendicular to the tangent line q1.

Fig. 7 is an optical path diagram of the incident light ray R2 incident on the outer wall of the solar vacuum tube (not pointing to the center 02) along the center position of the solar vacuum tube slightly offset from the left side Q2 of the central axis. As can be seen from Fig. 7, the tangent q2 at the points R2 and Q2 The perpendicular line (normal) P2 has an angle of intersection η 2, which is known by geometric optics. η 2 is the angle of incidence, and R2 will produce a certain amount at point Q2. The reflection F2, the incident angle is equal to the reflection angle, that is, η2=ρ2; in addition, the remaining light Ζ2 is refracted into the solar vacuum tube to reach the absorption surface of the inner tube 9 of the coating, and the efficiency of this state is second.

According to geometric optics, when the incident angle of the light is greater than or equal to the total reflection angle, the incident light will produce total reflection (in this case, the incident angle is equal to the reflection angle), and the refractive index of the optical glass is η = 1.64, the total reflection of the optical glass. Angle η 3 = 37.34° ; Figure 8 is the optical path of incident light ray R3 projected onto the outer wall of the solar vacuum tube along the total reflection angle position Q3 of the solar vacuum tube. As can be seen from Figure 8, R3 produces total reflection at point Q3, all light is It is impossible to enter the absorption surface of the inner tube 9 of the solar vacuum tube coating, and the projection efficiency of the incident light to the inner wall of the solar vacuum tube is zero.

Similarly, the light incident on the outer wall of the solar vacuum tube at a position other than the point Q3 will also be totally reflected and cannot enter the absorption surface of the inner tube 9 of the solar vacuum tube coating.

Figure 9 is a light path diagram of the uniform projection of sunlight onto the solar vacuum tube.

Figure 10 is an equivalent optical path diagram of a portion of the sunlight projected onto the solar vacuum tube and effective to enter the absorption surface of the inner tube 9 of the solar vacuum tube coating. As can be seen from Fig. 10, assuming that the outer diameter of the solar vacuum tube is D, the effective illuminating surface width is only 2 Χ (D/2Xsin37.34.) =0.606 Do It can be seen that the solar vacuum tube has a low heat collecting efficiency (the national standard is set at 45%) .

It is further seen from FIG. 5 that after the sunlight 1 on the concentrating surface of the width a is refracted by the line focal Fresnel condenser lens 2, each of the refracted rays 11 is perpendicular to and perpendicular to the tangent q on the outer surface of the solar vacuum tube. Refers to the center 0, which is equivalent to the effect of Figure 6; therefore, all sunlight 1 on the concentrating surface of width a can efficiently pass through the transparent outer tube 7 and project into the inner tube of the coating. On the absorption surface of 9; assuming a = 150, D = 47, in the concentrating state (Fig. 5), it will absorb 150/ (0. 606 X 47 ) more than the state of natural light (Fig. 10) of the solar vacuum tube. . 26 times the sun.

Therefore, the device of the present invention is extremely efficient in obtaining solar heat from a solar vacuum tube.

Pressure bearing: Since the vacuum heat collecting tube is provided with a flexible aluminum foil 9 with elasticity, the inner wall of the heat conducting aluminum wing 9 is covered with a "U" type metal tube 12 with a through hole, and the heat conducting liquid is only from the "U" type. The metal tube 12 flows through, the glass bulb is not pressurized, all the pressure is carried by the "U" type metal tube 12, and the "U" type metal tube 12 is a small diameter tube, which has a great pressure bearing capacity, for example, Φ The copper management theory of 8 Χ 1 is 225 kg/cm ² , so this device is suitable as a high-temperature heater such as thermal power generation. No squib: Generally, there are three reasons for the solar tube squib, one of which: mechanical impact, such as hail and other hard objects; second: thermal shock, such as sudden exposure to cold water after being exposed to a long time Cold, causing a high temperature difference between the inner tube and the outer tube, thereby causing a stress difference and bursting the tube; third: the residual water in the tube is expanded and expanded after being frozen.

Since the solar vacuum tube of the present invention is placed in a box, the upper part is covered and protected by a Fresnel lens, and the mechanical hard object usually encountered does not damage the glass bulb, so that the tube can be effectively avoided. Secondly, because the inner tube 9 and the "U" type metal tube 12 are also separated by a layer of heat conductive aluminum wings 10, if the solar vacuum tube is exposed to a long time and is in the "U" type metal tube 12 After passing through the cold water, due to the thermal buffering of the thermally conductive aluminum wing 10 Use, so that the heat transfer rate has a hysteresis (the thinner the aluminum wing, the greater the hysteresis), so that the inner tube 9 of the coating is not subjected to chilling, thus alleviating the tube caused by the temperature difference stress; third, in winter, due to the coating There is no water in the inner tube 9, and only a small amount of heat transfer oil is introduced into the "U" type metal tube 12, so that the tube will not burst even at an extremely low temperature of minus 30 ° C. Easy to clean: The conventional solar vacuum tube water heater has a large arc-shaped tube surface due to its sunny surface, and the thermal efficiency will be greatly affected by the dust pollution for a long time. If it is used in a large area, it is difficult to mechanize and clean, and the refracting concentrating flat solar energy of the present invention is The collector is a continuous plane due to the sunny side, which facilitates the use of mechanical cleaning such as automatic brushing to maintain an efficient photothermal conversion rate. In summary, the refracting concentrating plate solar collector of the present invention combines Fresnel focal length lens, glass vacuum tube and "U" type metal tube heat exchanger organically, so that the overall performance is large. The scope of application has been greatly expanded, and the application of solar energy will be popularized. Solar energy is expected to become the main source of energy for human beings; this will save energy, reduce carbon emissions, reduce the content of PM2.5 in the air, and optimize humans. The living environment, the continuation of human energy needs and the improvement of people’s quality of life are extremely important.

DRAWINGS

Figure 1 is a front elevational view of a refracting concentrating plate solar collector;

Figure 2 is a plan view of Figure 1; Figure 3 is a side view of Figure 2;

Figure 3 is a side view of Figure 2;

Figure 4 is a cross-sectional enlarged view of the solar vacuum tube and its internal parts;

Figure 5 is a condensing optical path diagram of the present invention;

Figure 6 is a schematic view showing the vertical incidence of the light beam from the axis of the solar vacuum tube;

Figure 7 is a schematic view showing the vertical incidence of the light beam from the left side of the solar vacuum tube axis;

Figure 8 is a schematic illustration of the vertical incidence of the beam from the critical point on the left side of the axis of the solar vacuum tube;

Figure 9 is a schematic diagram of the optical path of the natural vacuuming of the solar vacuum tube (in the absence of light collection); Figure 10 is an equivalent optical path diagram of Figure 9.

Figure 11 is an assembled view of a thermally conductive aluminum wing and a "U" shaped metal tube.

Figure 12 is a cross-sectional view taken along line A-A of Figure 11;

Figure 13 is a cross-sectional view of the tensioned aluminum frame.

Figure 14 is a partial enlarged view of Figure 1.

Figure 15 is a cross-sectional view of an aluminum alloy heat collecting groove.

Numbers in the figure: 1 sunlight, 2 Fresnel line focal concentrating lens, 3 tension aluminum frame, 4 tension rivets, 5 outer frame upper part, 6 outer frame lower part, 7 solar vacuum tube outer glass case, 8 solar vacuum tube Vacuum chamber, 9 solar vacuum tube inner bulb, 10 heat conductive aluminum wings, 11 refracted sunlight (convergence light), 12 "U" type metal tube, 13 upper outer box, 14 heat resistant rubber sleeve, 15 joint metal tube , 16 insulation materials, 17 lower case, 18 solar vacuum tube rear bracket, 19 solar vacuum tube tail protection cover, 20 solar vacuum tube coating layer, 21 aluminum alloy heat collecting tank, 22 solar vacuum tube front bracket. detailed description

Further description will be made below with reference to the accompanying drawings and specific embodiments.

The structural principle of the present invention is shown in FIG. The refracting concentrating plate solar collector of the present invention is composed of two upper and lower components, wherein the Fresnel wire focal concentrating lens sheet 2, the tensioned aluminum frame 3, the tensioning rivet 4, and the outer frame upper portion 5 constitute an upper assembly. The upper component is also called optical convergence component; the lower part of the outer frame 6, the solar vacuum tube (including the vacuum tube outer bulb 7, the vacuum chamber of the vacuum tube 8, the vacuum tube inner bulb 9, the vacuum tube coating layer 20), the heat conductive aluminum wing 10, "U" Metal tube 12, upper outer box 13, heat-resistant rubber sleeve 14, connecting metal tube 15, insulation material 16, lower outer box 17, solar vacuum tube rear bracket 18, solar vacuum tube tail protection sleeve 19, aluminum alloy heat collection The groove 21 and the solar vacuum tube front bracket 22 constitute a lower assembly, and the lower assembly is also called a high temperature heat collecting assembly; the upper and lower components are integrated by welding (spot welding) or riveting.

In the upper assembly, the sunlight (parallel light) 1 is condensed into a converging light 11 by the Fresnel line focusing condensing lens sheet 2, and is projected to the lower assembly for high-temperature heat collection; wherein, the tensioning aluminum frame 3 plays a key role. effect. As shown in Fig. 1, Fig. 13, and Fig. 14, the tensioned aluminum frame 3 has the same section along the length direction, and the upper part of the section is a hook groove, and the groove and the rib of the Fresnel line focal condensing lens sheet 2 are four sides. In the middle, the abdomen is a lateral elastic zone, the lower side is perpendicular to the abdomen; the inner side of the lower side has a downward rib, the rib acts as a mechanical "fulcrum"; the outer side of the lower side also has a longer downward The vertical flange, which acts as an outer limit and acts as a stress equalizer. When the tensioning nail 4 is screwed down into the upper portion 5 of the outer frame, the upper portion of the aluminum frame is bound to generate a tension against the Fresnel line focusing lens sheet 2 due to the "fulcrum". To produce a tight prestress; since the tensioned aluminum frame abdomen is a thin flat plate structure, under the above prestressing force, a certain elastic deformation is bound, which is equivalent to the action of a spring; The effect is: When the giant Fresnel line focal concentrating lens sheet is thermally expanded and contracted due to the temperature difference, the tensioned aluminum frame web can be compensated correspondingly in its elastic range to maintain the Fresnel line focus concentrating The flat state of the lens sheet 2 does not change.

The above-mentioned Fresnel line focal condensing lens sheet 2 is a rectangular sheet on which one or more focal lines are formed according to the different heat collecting temperature of the collector, and the higher the temperature, the smaller the number of focal lines.

Since the upper frame 5 of the outer frame is a closed rigid frame, the tensioned aluminum frame 3 is tensioned by the tensioning nail 4 to form a separate component for easy assembly, storage and subsequent maintenance and replacement. .

As shown in Fig. 1, Fig. 2 and Fig. 3, in the lower assembly, the lower part of the outer frame 6, the heat resistant rubber sleeve 14, the solar vacuum tube rear bracket 18, the solar vacuum tube tail protection sleeve 19, the solar vacuum tube front bracket 22 and the like The solar vacuum tube is fixedly mounted in the assembly, wherein the spacing between the solar vacuum tubes is the same as the distance between the focal lines of the Fresnel line focal concentrating lens sheet 2; the solar vacuum tube center line and the Fresnel line focal concentrating lens sheet 2 The distance between them is the same as the focal length of the Fresnel line focal condensing lens sheet 2. In addition, a lower outer box 17 is disposed on the outer side of the solar vacuum tube rear bracket 18 for protecting the solar vacuum tube tail portion to avoid damage; an upper outer box 13 is disposed on the outer side of the solar vacuum tube front bracket 22 for Protecting the open end of the solar vacuum tube and loading the insulating material 16 to The high temperature medium in the joint metal pipe 15 is insulated to avoid heat loss.

Among them, the solar vacuum tube is equipped with a heat-conducting aluminum wing and a "U"-shaped metal tube with a through hole, as shown in Fig. 4, Fig. 11, and Fig. 12; "U" type metal tube in a plurality of solar vacuum tubes The through holes are connected in series or in parallel or partially in parallel and then connected in series.

The refracting concentrating plate solar collector of this structure has the characteristics of good heat collecting effect, heat loss and small heat radiation, and is extremely suitable for use as a solar heating and solar steam boiler in high latitude and high cold regions. If a heat-insulated thermal pillow is separately arranged on the upper part of the heat collector, a refraction concentrating flat-plate solar collector which can be used independently can be constructed.

In addition, if it is used in low latitude areas, the aluminum alloy heat collecting groove of the section shown in Fig. 15 can be replaced with a solar vacuum tube to reduce cost and reduce weight.

The refracting concentrating plate solar collector of the invention has a heat-conducting medium which only circulates in the metal tube and does not enter the glass inner tube of the solar vacuum tube, and therefore is a pressure-tight closed container, and introduces a flowing heat-conducting medium, which can collect the collected High-temperature heat is taken out; if water is introduced for heat exchange, high-temperature water or saturated steam or superheated steam can be directly output. At the same time, the cracking of the solar vacuum tube is avoided.

An array is constructed using a plurality of such refracting concentrating plate solar collectors to form a solar boiler or desalination or sewage purifier or as a city heating device or as a heating device for other industrial equipment.

The present invention is widely used, and such a refracting concentrating plate solar collector can be used for a variety of purposes, and thus, it is not limited to the contents described in the embodiments.

Claims

Claim

1. A refracting concentrating plate solar collector comprising a concentrator, a heat collector, a heat exchanger and an outer frame, comprising: a Fresnel line focal concentrating lens sheet (2), two pairs of sheets a tight aluminum frame (3), at least one solar vacuum heat collecting tube, a heat conducting aluminum wing (10) bonded to the inner wall of the solar vacuum heat collecting tube, and a "U" type metal tube attached to the inner wall of the heat conducting aluminum wing (10) (12) ), the outer frame (6) that secures the above components together.

2. The refracting concentrating plate solar collector according to claim 1, wherein: the Fresnel line focusing concentrating lens sheet (2) is a rectangular sheet, and one or more focal lines are formed on the sheet; each focal line There is a vacuum heat collecting tube parallel to the focal line, and each of the vacuum heat collecting tubes is provided with a heat conducting aluminum wing (10) and a "U" type metal tube with a through hole.

(12); The through holes of the "U" type metal pipe (12) in the multiple vacuum heat collecting tubes are connected in series or in parallel or partially in parallel and then connected in series.

3. The refracting concentrating plate solar collector according to claim 1, wherein: each of the "microprism elements" in the Fresnel line focusing condensing lens sheet (2) is in accordance with the central width and the outer contour. The principle distribution; the rectangular Fresnel line focal concentrating lens sheet (2) has continuous strip-shaped ribs or grooves on each of its four edges.

The refracting concentrating plate solar collector according to claim 1 or 3, wherein: the four ribs or grooves of the rectangular Fresnel focal concentrating lens sheet (2) are each provided with a tensioning aluminum Frame (3); tension aluminum frame (3) the same length along the length of the section; tension aluminum frame (3) the upper part of the section is a hook groove, hook groove and rectangular Fresnel line focus condenser lens (2 The ribs or grooves of the four sides are engaged, the abdomen is a lateral elastic region, and the lower side is perpendicular to the abdomen; the inner side of the lower side has a downward rib, and the function of the rib is A mechanical "fulcrum"; the outer side of the lower side also has a longer downward vertical convex edge, which acts as an outer limit and as a stress homogenizer.

5. The refracting concentrating plate solar collector according to claim 1, wherein: a rectangular rigid frame is disposed at a lower portion of the tensioned aluminum frame (3), and an outer edge of the rigid frame is slightly larger than a rectangular Fresnel line. The focal concentrating lens sheet (2); the tensioning aluminum frame (3) and the upper part of the outer frame (5) are coupled to each other by a self-tapping screw (4), and the adjustment of the self-tapping screw (4) is adjusted to achieve the adjustment of Fresnel. Pre-tightening force of the concentrating lens (2); the rectangular Fresnel focal concentrating lens (2), the tensioned aluminum frame (3), and the upper part of the outer frame (5) are connected by an appropriate amount of self-tapping screws. Form a separate component.

6. The refracting concentrating plate solar collector according to claim 1, wherein: at a lower portion (6) of the outer frame, there is a vacuum heat collecting tube mounting bracket (18), and a vacuum heat collecting tube is fixedly mounted therein; the vacuum collecting tube is installed; The axis position is on the focal line of the Fresnel line focal concentrating lens sheet (2).

7. The refracting concentrating plate solar collector according to claim 1, wherein: the upper part of the vacuum heat collecting tube bracket (17) is an outer frame (6), a rectangular Fresnel line focusing concentrating lens sheet (2), The aluminum frame (3) is tensioned and connected to each other by a self-tapping screw; the pre-tightening force of the Fresnel wire concentrating lens sheet (2) is adjusted by adjusting the screwing amount of the self-tapping screw (4).

8. The refracting concentrating plate solar collector according to claim 1, wherein: the Fresnel line focusing concentrating lens sheet (2) is a rectangular sheet, and one or more focal lines are formed on the sheet; each focal line Underneath is an aluminum alloy collecting trough parallel to the focal line

(21); The upper part of the aluminum alloy heat collecting groove (21) is a symmetrical upward curved wing, the lower part The space is a through hole through which the liquid can pass; the through holes between the perforated aluminum alloy heat collecting grooves can be connected in series or in parallel or partially in parallel and then connected in series.

9. The refracting concentrating plate solar collector according to claim 1, wherein the collector is a pressure-tight container that introduces flowing water or heat transfer oil or other heat transfer medium to collect high temperature heat. Take out; The upper part of the collector is independently provided with a heat-insulated thermal pillow to form a solar high-temperature collector that can be used independently.

10. The refracting concentrating plate solar collector according to claim 1, wherein: arranging an array of a plurality of such refracting concentrating plate solar collectors to form a solar steam boiler or a seawater desiccator or a sewage purifier Or as a heating device for urban heating equipment or as other industrial equipment.