CN202660768U - Low cost double effect solar air heat collector - Google Patents

Abstract

The utility model discloses a low-cost double-effect solar air heat collector. It includes a light-transmitting cover plate, a water tank and a capillary network, and an insulating layer suitable for the shell is provided on the inner side of the shell with one side open and the other closed; the shell opening is provided with a light-transmitting cover plate; the shell An air outlet is provided at the matching position with the upper part of the rear wall of the insulation layer; the lower part of the air outlet is provided with a heat absorbing device; It is composed of a capillary network and a heat collecting surface with a selective absorption coating on the side of the concrete layer close to the light-transmitting cover plate. Air outlet; the inlet and outlet of the capillary network are connected to the water tank through pipelines. The utility model has low cost , long service life, satisfies the needs of users to a great extent, and has extensive social benefits.

Description

A low-cost double-effect solar air collector

technical field

The utility model relates to a solar air heat collector, in particular to a low-cost double-effect solar air heat collector.

Background technique

Energy, environment and sustainable development are the themes of the survival and development of human society in the 21st century, and the development of solar thermal utilization technology has received global attention. Due to the use of air as the heat exchange medium, the solar air collector has the advantages of no winter freezing, no corrosion and scaling, low sealing requirements and low cost. Therefore, many families around the world make solar energy suitable for their own houses. The air collector is installed and operated by itself, and many experimental results show that the effect is good. However, the use of solar air collectors for heating in buildings has the problems of overheating and heat energy waste in summer. In addition, for rural areas, the price of solar air collectors is still somewhat high.

From the perspective of practical application and promotion, solar air collectors have not yet formed a market, which is not unrelated to problems such as promotion and application occasions, high prices, overheating in summer and waste of heat energy. In order to solve the problem of overheating in summer, a new type of color-changing curtain wall solar air collector was reported in (Journal HVAC). , but to some extent heat energy is still wasted, which limits the wide application and promotion of solar air collectors.

Contents of the invention

The utility model is proposed in response to the above problems, and the purpose is to provide a low-cost double-effect solar air heat collector suitable for use in various regions, with strong heat storage capacity, low production cost, effective improvement of thermal efficiency, and reduced heat loss. device.

In order to achieve the above purpose, the technical solution of the utility model to solve the technical problem is: a low-cost double-effect solar air heat collector, including: a light-transmitting cover plate, a water tank, and a capillary network, which lies in: a shell with one side open and the other side closed The inner side of the body is provided with an insulation layer suitable for the shell; the opening of the shell is provided with a light-transmitting cover plate; the matching position between the shell and the upper part of the rear wall of the insulation layer is provided with an air supply port; the lower part of the air supply port is provided with Heat-absorbing device; the heat-absorbing device is fixed on the rear wall of the housing through a bracket, and the heat-absorbing device is uniformly provided with a capillary network in the concrete layer and is provided with a selective absorption coating on the side of the concrete layer close to the light-transmitting cover plate The heat collecting surface is formed, and the housing at the rear of the heat absorbing device is provided with an air outlet at the matching position of the rear wall of the insulation layer; the inlet and outlet of the capillary network are connected to the water tank through pipes.

A uniform air-supply baffle with through holes is provided between the matching position on the upper heat collecting surface of the heat absorbing device and the transparent cover plate.

The through-holes on the uniform air-supply baffle are uniformly distributed gradually from small holes to large holes from the middle to the edge.

A uniform air outlet baffle with through holes is arranged between the matching position at the rear of the heat absorbing device and the insulation layer.

The through holes on the uniform air outlet baffle are uniformly distributed gradually from small holes to large holes from the middle to the edge.

Compared with the prior art, the utility model has the following advantages and effects:

Because the utility model adopts concrete, capillary network and selective coating as the light-to-heat conversion and transfer plate core, while ensuring the thermal efficiency, the utility model reduces the production cost of the solar air heat collector, and also has the function of collecting hot air and hot water. Double effect, it can provide domestic hot water for the family when there is no heating; because of the dual-channel air supply design, the air first flows through the channel between the heat-absorbing device and the transparent cover, and then flows through the heat-absorbing device and the insulation The channel between the layers reduces the heat loss of the heat collecting surface, and at the same time increases the air flow process, and then ensures the convective heat transfer effect of the air supply through the uniform air supply and air outlet baffles. In addition, the processing principle of the utility model is simple. Compared with other solar air collectors, the thermal efficiency is slightly lower, but the material consumption is relatively small, the overall cost is low , the service life is long, and basically no maintenance is required. To meet the needs of users to the maximum extent, and has a wide range of social benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model heat collector;

Fig. 2 is the structural representation of the heat absorbing device of the utility model heat collector;

Fig. 3 is a schematic cross-sectional structure diagram of the uniform air supply and air outlet baffles of the heat collector of the utility model.

In the figure: shell 1, insulation layer 2, uniform air supply baffle 3, uniform air outlet baffle 4, heat absorbing device 5, light-transmitting cover 6, bracket 7, water tank 8, air outlet 9, air supply outlet 10, Concrete layer 11, capillary network 12, through holes 13.

Detailed ways

Below, referring to the accompanying drawings of the utility model and combining specific embodiments, the utility model will be further described in detail, but the protection scope of the utility model is not limited by the specific embodiments, and the claims shall prevail. In addition, under the premise of not violating the scheme of the utility model, any modification or change made to the utility model that can be easily realized by those skilled in the art will fall within the scope of the claims of the utility model.

Example 1:

As shown in Figures 1, 2, and 3, a low-cost double-effect solar air collector of the present invention includes: a shell 1, an insulation layer 2, a uniform air supply baffle 3, and a uniform air outlet baffle 4, Heat absorbing device 5, transparent cover plate 6, bracket 7, water tank 8, air outlet 9, air outlet 10, concrete layer 11, capillary network 12, and through hole 13. It is that the inner side of the shell 1 with one side open and the other closed is provided with an insulating layer 2 that is compatible with the shell 1; the open side of the shell 1 is provided with a light-transmitting cover 6; The fitting position of the upper part is provided with an air supply port 10; the lower part of the air supply port 10 is provided with a heat absorbing device 5; 11 is uniformly provided with a capillary network 12 and a heat collecting surface that is provided on the side of the concrete layer 11 close to the light-transmitting cover plate 6 and adopts magnetron sputtering to prepare a selective absorption coating. The rear part of the heat absorption device 5 An air outlet 9 is provided at the matching position of the shell and the rear wall of the heat-insulation layer; a uniform hole 13 with a through hole 13 is provided between the matching position of the upper part of the heat collecting surface of the heat absorbing device 5 and the light-transmitting cover plate 6. An air supply baffle 3; a uniform air outlet baffle 4 with a through hole 13 is provided between the fitting position at the rear of the heat absorbing device 5 and the insulation layer; the uniform air supply baffle 3 and the uniform outlet The through holes 13 on the windshield 4 are uniformly distributed gradually from small holes to large holes from the middle to the edge. The inlet and outlet of the capillary network 12 are connected to the water tank 8 through pipelines.

The operating principle of the utility model using process is as follows:

A low-cost double-effect solar air heat collector of the utility model is hung on an outdoor wall, and the water tank 8 is installed in an ideal indoor place.

When running in the heating mode: the solar heat collector of the present utility model only uses air as the heat exchange medium to operate under the drive of the fan, and the indoor air enters the solar air heat collector of the present utility model from the air supply port 10, and passes through the uniform air supply baffle 3 After the air enters the channel between the heat absorbing device 5 and the transparent cover plate 6, it exchanges heat with the heat collecting device 5 face-to-face, and then the air changes its flow direction by 180 degrees at the opening below the heat absorbing device 5 , the channel convection heat exchange between the heat absorbing device 5 and the insulation layer 2, the air heated twice passes through the uniform air outlet baffle plate 4 and enters the room along the air outlet 9 to heat the room.

When running in the hot water supply mode: the hot air mode of the solar heat collector of the present invention is closed, and the hot water collected through the inlet and outlet of the capillary network 12 enters the water tank 8 through the pipeline under the drive of the water pump or the pressure difference of the free tuyere.

When operating in double-effect mode: the solar heat collector of the present invention can prepare hot air and hot water at the same time, that is, the above-mentioned operation mode in which the heating mode and the hot water supply mode are carried out at the same time, and will not be described again.

Claims (5)

1. A low-cost double-effect solar air heat collector, including: a light-transmitting cover plate (6), a water tank (8) and a capillary network (12), characterized in that: one side is open and the other side is closed (1) An insulating layer (2) compatible with the housing (1) is provided on the inner side; a light-transmitting cover plate (6) is provided on one side of the opening of the housing (1); behind the housing (1) and the insulating layer (2) The fitting position on the upper part of the wall is provided with an air supply port (10); the lower part of the air supply port (10) is provided with a heat absorbing device (5); the heat absorbing device (5) is fixed behind the housing (1) through a bracket (7) On the wall, the heat absorbing device (5) is uniformly provided with a capillary network (12) in the concrete layer (11) and a selective absorbing coating is provided on the side of the concrete layer (11) close to the light-transmitting cover plate (6). The heat-collecting surface is composed of an air outlet (9) at the matching position between the shell at the rear of the heat-absorbing device (5) and the rear wall of the insulation layer; the inlet and outlet of the capillary network (12) pass through The pipe is connected to the water tank (8). 2. A low-cost double-effect solar air heat collector according to claim 1, characterized in that the matching position on the upper part of the heat collecting surface of the heat absorbing device (5) and the light-transmitting cover plate (6) Uniform air supply baffles (3) with through holes (13) are arranged between them. 3. A low-cost double-effect solar air heat collector according to claim 2, characterized in that the through hole (13) on the uniform air supply baffle (3) gradually changes from small to small from the middle to the edge. Uniform distribution of pores to macropores. 4. A low-cost double-effect solar air heat collector according to claim 1 or 2, characterized in that there is a band pass between the fitting position at the rear of the heat absorbing device (5) and the insulation layer The uniform air outlet baffle (4) of hole (13). 5. A low-cost double-effect solar air heat collector according to claim 4, characterized in that the through hole (13) on the uniform wind outlet baffle (4) gradually changes from small to small from the middle to the edge. Uniform distribution of pores to macropores.

Images