WO2006133625A1

WO2006133625A1 - A solar energy heat collection device

Info

Publication number: WO2006133625A1
Application number: PCT/CN2006/001144
Authority: WO
Inventors: Chia-Yi Hsu
Original assignee: Chia-Yi Hsu
Priority date: 2005-06-15
Filing date: 2006-05-29
Publication date: 2006-12-21
Also published as: CN1880880A; CN100541045C

Abstract

A solar energy heat collection device is disclosed in the present application. On account of being penetrated through by sunlight moderately, the device also have the function of lighting. The device comprises a group of total reflection pieces, an infrared absorbing unit and a water collector. Superposing two transparent pieces, fusing and sealing the edges of them forms the total reflection piece. An air layer formed between two transparent pieces can bring a total reflection of the sunlight in water. The infrared absorbing unit can absorb the sunlight, which reflected by the total reflection pieces. The water collector is made of a transparent material, in which water is filled. The group of total reflection pieces and the infrared absorbing unit are provided in the water collector. Using solar energy raises the temperature of the water in the collector.

Description

Solar collector

Technical field

The invention relates to a solar heat collecting device, in particular to a solar light collecting device with a body light transmission. Background technique

The most simple of the solar collectors is the Trombe Wall device, which was invented by Trombe (French Patent Application No. 71.23778, US Patent No. 3,832,992). A wall constructed of a material with a relatively high specific heat such as masonry, which directly or indirectly collects heat energy from sunlight and stores the heat energy in the wall. After the sunset, when the indoor temperature drops, it can be launched indoors. Infrared radiant heat releases heat to create warmth. Such a wall can also use the principle of solar mortuary to warm the indoor air to circulate the air to maintain warmth and promote air convection. Solar water heaters are the most common solar heat collecting and heat storage systems. They can be roughly divided into three types: smouldering type, flat type and vacuum tube type, and the hot water produced is used for domestic hot water.

Solar energy is an electromagnetic radiant energy. Its spectrum can be divided into three parts: ultraviolet light, visible light and near infrared light. The ultraviolet part and the near infrared part are invisible light. The near infrared part is the main source of heat energy, accounting for about 100% of solar energy. Forty-six. The solar collector is actually a near-infrared absorbing device. When the solar energy is absorbed, the temperature rises and the far-infrared rays are emitted. The higher the ratio of the near-infrared rays is absorbed, the smaller the ratio of the far-infrared rays is emitted. Good heat collecting effect, this kind of material with high infrared absorption rate and small emission ratio has a black appearance. Therefore, the solar heat collecting device is mostly black opaque device, even if it is made of opaque metal material, it needs to be coated. A layer of black surface to increase efficiency.

The appearance of a general solar hot water collector is a flat box-shaped body composed of pipes. It is a bit awkward and uncoordinated in the building, which may adversely affect the city appearance. Some cities even limit their use. The worldwide trend in solar energy utilization is somewhat contradictory.

In human activities, about half of the energy consumption of the home environment is used for hot water and space heating. Lighting consumes about 6 percent of energy, and the energy used for lighting in the working environment is relatively large. Forty percent, lighting plus hot water and space heating account for about 60%. Therefore, heating and lighting are actually the biggest energy requirements. The effective use of solar energy can save coal-fired power consumption, which not only has immediate benefits for the people's livelihood economy, but also plays an important role in slowing global warming and improving the ecological environment.

Recognizing the importance of hot water in life, and water is the best heat storage material in living matter, the specific heat is about five times the specific heat of the masonry material, about twice the specific heat of the wood material, about The air is four times more than the heat, and the present invention further utilizes the optical properties of water to develop a light total reflection device made of a light-transmissive material sheet, which will inject sunlight into the liquid water, especially the near-infrared portion thereof. Reflecting into an infrared absorbing sheet device hidden in the water container on the side of the light traveling direction, the infrared absorbing sheet device is heated by solar energy to heat the surrounding water, and is heated by the heated water. The natural convection effect, or the forced convection by means of a small electric pump, causes the water to circulate in the water container to complete the overall temperature rise, and the solar energy is stored in the form of hot water. The outer periphery of the water container is provided with necessary heat insulation facilities to avoid the loss of heat energy. The water container may be a south-facing wall-shaped body, or a roof portion of the building that can receive sunlight, and the total reflection sheet device can be hidden from When the infrared absorption heat collecting device in the water is viewed from the inside of the room, it is not easy to detect the presence of the black infrared absorbing heat collecting device, and the visualizing effect is achieved. The outer insulating device of the water container can be multi-layered according to actual needs. Inflatable or vacuum insulated glass, silicon aerogel filled glass or polymer material, it can be a fixed device or a movable device. According to the needs of practical applications, the indoor side can also be insulated to achieve comfort.

The use of water as a heat storage body has been known for a long time, such as U.S. Patent 4,286,576, owned by the U.S. Department of Energy, and U.S. Patent 4,216,765, owned by Boeing, USA. However, the heating method of U.S. Patent No. 4,216,765 mainly uses infrared absorbing glass on the outer wall of the water container, and uses the outer wall glass to generate temperature rise heating. U.S. Patent No. 4,286,576 uses a piece of transparent glass which is placed in the center of the water container and absorbs infrared rays. Heating device for heating. The heating efficiency and manufacturing cost are obviously not as good as the technology proposed by the present invention, and the content of the invention

It is an object of the invention to provide a solar collector. In particular, it is a solar light collector with a body light transmission.

The invention relates to a solar heat collecting device comprising: a total reflection sheet, which is a transparent device having an air layer in the middle; a solar absorption sheet that absorbs sunlight reflected by the total reflection sheet; the total reflection sheet and the solar absorption sheet have an angle between the sunlight that is totally reflected by the total reflection sheet and is incident on the sunlight reflection sheet Solar absorption sheet;

A water collector is a transparent water container that can be completely penetrated by sunlight. The built-in water liquid can convect the water in the water collector;

The total reflection sheet and the solar absorption sheet are placed in the water collector;

It is characterized by an air layer of a transparent total reflection sheet which diverts sunlight which is incident into the aqueous liquid into the solar absorption sheet placed on the side of the traveling direction of the sunlight in the aqueous liquid.

The present invention further utilizes the optical properties of water to develop a light total reflection device made of a light-transmissive material sheet, which reflects sunlight, especially its near-infrared portion, which is incident into the water liquid, into a water container. An infrared absorbing sheet device located on the side of the light traveling direction, which is heated by solar energy to heat the surrounding liquid, and the natural convection caused by the increase in thermal expansion by the heated water is Or by means of a small electric pump to actively force convection, the water is circulated in the water container to complete the overall temperature rise, and the solar energy is stored in the form of hot water. The outer periphery of the water container is provided with necessary heat insulation facilities to avoid the loss of heat energy. The water container may be a south-facing wall-shaped body, or a roof portion of the building that can receive sunlight, and the total reflection sheet device can be hidden from When the infrared absorption heat collecting device in the water is viewed from the inside of the room, it is not easy to detect the presence of the black infrared absorbing heat collecting device, and the visualizing effect is achieved. The outer insulating device of the water container can be used according to actual needs. The layer is made of aerated or vacuum insulated glass, silicon aerogel filled glass or polymer material. It can be a fixed device or a movable device. According to the needs of practical applications, the indoor side can also be insulated to achieve comfort.

The solar heat collecting device designed by the invention can collect solar heat energy efficiently, and at the same time, can collect light for indoor lighting, and can be presented in the form of, but not limited to, a wall surface, a roof window, etc., and there is no appearance on the building. The sense of abruptness is conducive to the design of integrated energy-saving buildings. The structure is simple, which is conducive to the promotion of solar energy utilization and provides energy-saving benefits in the fields of heating and lighting. .

The present invention provides natural adjustment to the morning sun, the setting sun, and the midday sun, as well as other existing technologies.

In order to further disclose the specific technical content of the present invention, please refer to the figure first, where - DRAWINGS

1 is a top view showing the principle of an embodiment of the present invention;

Figure 2 is a detailed structural view of an embodiment of the present invention;

3 is an exploded view of a total reflection device according to an embodiment of the present invention;

Figure 4, Figure 4-2, Figure 4-3, Figure 4-4 are diagrams of the construction of the embodiment of the present invention; Figure 5 is another embodiment of the present invention, which can be adjusted with the sun tracker A schematic diagram of the angle. detailed description

1 is an embodiment of a heat collecting device of the present invention, the heat collecting device is composed of a transparent total reflection sheet 1 and an infrared absorbing device 2, which is housed in the sump 3, and The water collector 3 contains water liquid 4, and when the light 5 is incident on the water collector 3, it is projected through the water liquid 4 onto the total reflection sheet 1, and the total reflection sheet 1 has an air layer G therein. When the incident angle of the light is greater than 48.8 degrees (the refractive index of the water liquid is 1.33), a total internal reflection phenomenon is generated on the water liquid side, and the light reflection is turned into the infrared absorption device 2.

The total reflection sheet 1 is formed by laminating two transparent sheets to seal the edges so as to be impervious to water and airtight, and an air layer G is formed therebetween. In practical application, the total reflection sheet 1 can be a single fold as shown in FIG. The structure may also be a continuous total reflection sheet group 1 shown in FIG. 2 and FIG. 3, and the continuous total reflection sheet group 1 1 is in a turning manner, and an angle is formed on the sun-facing surface, and the two diagonally facing surfaces are disposed. And the position of the center angle of the two beveled corners is defined as a notch 12 so as to accommodate an infrared absorbing device 2 which is made of a metal foil but is coated with an infrared absorbing material. Basically, the material of the continuous total reflection sheet group 1 1 can be, but not limited to, a high temperature resistant transparent polycarbonate, and it can be pre-formed and used for multiple sets of continuous applications, the temperature is relatively high. For high applications, high temperature resistant glass flakes are used. The sun-facing surface of the total reflection sheet can be subjected to heat treatment to enhance the reflection of infrared rays.

The water collector ₃ is for selectively closing the box, and when the large piece is arranged, the wall surface can be formed, as shown in Fig. 4-1, which is made of transparent material and heated by water for domestic use. For the purpose of simply storing heat, if it is used as a heat storage device alone, antifreeze, or other antifreeze measures, such as auxiliary electric heating, may be added to the water in the cold zone.

Referring to FIG. 2, when the south side of the building is facing the male side and is in the exposed state, the south side faces the sun side. In the morning, the light is incident on the west side of the heat collecting device, and the reflection on the west side. The film can receive sunlight, but because the incident angle of sunlight entering the continuous total reflection sheet group 1 1 is small, it can enter the room through the total reflection sheet. As the sun runs, the incident angle of sunlight gradually increases and penetrates. The sunlight gradually decreases, the reflected sunlight gradually increases, and the total reflection phenomenon gradually occurs; and when it is noon, the light 5 is vertically incident into the sump 3, and the incident angle formed by the continuous total reflection sheet group 1 1 is larger than 48.8 degrees, so all the incident light produces total reflection, and the steering is injected into the infrared absorption device 2. The absorption of infrared rays will raise the temperature and warm the liquid, which is easy to absorb, and absorb the solar heat at noon. The most efficient, and the least light is transmitted. The sunlight can be seen as parallel to the Earth, but the scattering effect of the air makes it impossible for the total reflection surface to completely block the sunlight. A large proportion of the scattered sunlight penetrates into the room and can have a gentle illumination effect. On the sunny side of the continuous total reflection sheet group 1 1 , it is also possible to apply a treatment for enhancing the near-infrared reflection ability, or a material having a heat mirror effect on near-infrared rays.

Referring to FIG. 4 again, the embodiment of the invention is not limited to the scope of the invention. As shown in FIG. 4-1, when the invention is disposed on the sunny side of the building and forms a wall, a heat storage is formed. The water wall, which acts as a Trang wall, so that the solar energy collected during the day can be stored as hot water, and the stored heat is released after sunset to make the room warmer.

As shown in Fig. 4-2, it is provided on the top surface of the structure according to the invention. For example, when it is on the roof, it can also provide the function of releasing heat and warming at night during the daytime. At night, the water storage device should be covered with a heat insulation blanket to reduce heat energy. Loss.

Figure 4-3 shows the case where the present invention is installed in a solar greenhouse. It can be placed on the roof of the sun-heating room on the sunny side of the sun. It can be designed for simple lighting and heat collection. The heat storage and storage function can be separated. The water storage container placed indoors shoulders to reduce the load bearing capacity of the roof structure, and the water collector 3 is connected to a separate water storage device disposed in the room. 13 Passive or active convection, the separate water storage device 13 The water inside also collects heat due to circulation. '

As shown in Fig. 4-4, in the case of the slanting top of the sun, a separate separated water storage device 13 is provided in the living room, which is also separated from the room by the flow of water as shown in the above 4-3. The ice storage device 13 is warmed up to achieve heat storage.

In the case where the separate water storage device 13 is added, the thickness of the solar heat collecting device of the present invention can be relatively thin, and a pump or a siphon device can be added between the water collector 3 and the separate water storage device 13. The water liquid 4 between the accumulator 3 and the split reservoir 13 is circulated. The liquid in the heat collecting device and the liquid container thereof may also flow in a closed system as shown in FIG. 4-3, and the living water in the separated water storage device 13 is indirectly heated to be isolated. Liquid of device collector 3 Antifreeze can be added to the body to prevent freezing in winter.

The separated water reservoir is not necessarily a transparent body and can be any insulated water container. In areas where daylight is weak, in order to optimize the collection of daylight, the sun-tracking mechanism can be attached to the light-receiving surface so that the total-reflecting surface 1 faces the sun at any time. As shown in Fig. 5, 14 and 15 are fixed mechanism rails. It is linked with a sun tracking device (not shown) to rotate the light-receiving total reflection sheet 1 to follow the sun's running angle, so that it is at a better heat collecting angle position, and 16 is a set of each individual total reflection sheet. The rotational path of the thermal device does not interfere with each other when the individual heat collecting devices rotate.

The present invention has been described with reference to the preferred embodiments of the present invention, which are susceptible to those of ordinary skill in the art.

Claims

A solar collector device, comprising:

a total reflection sheet, which is a transparent device having an air layer in the middle;

a solar absorption sheet that absorbs sunlight reflected by the total reflection sheet;

The total reflection sheet has an angle with the solar absorption sheet, and the angle is such that the sunlight is totally reflected by the total reflection sheet and is incident on the solar absorption sheet;

Right

Wherein the air layer of the transparent total reflection sheet is converted into sunlight which is injected into the water liquid in the water liquid

The sunlight absorption sheet placed on the side of the traveling direction of the sunlight is incident.

2. The solar heat collecting device according to claim 1, further comprising a water reservoir device for storing hot water or heat energy; wherein the water reservoir device is the same as the water collector of the heat collecting device Water container.

3. The solar heat collecting device according to claim 1, further comprising a water reservoir device for storing hot water or heat energy, wherein the water reservoir device is separated from the water collector of the heat collecting device Separate water containers with pipelines connected to each other to allow water and liquid to communicate.

The solar heat collecting device according to claim 3, wherein the connecting pipe of the water collector and the water reservoir is sealed in the water reservoir, and the water liquid in the pipe and the water liquid in the water storage device They are independent of each other, and the pipeline in the water reservoir has a heat exchange structure.

The solar heat collecting device according to claim 3 or 4, wherein the water reservoir is an opaque water container.

The solar heat collecting device according to claim 3 or 4, wherein the water reservoir is a transparent water container.

The solar heat collecting device according to claim 1, wherein the water liquid in the water collector is added with an antifreeze.

The heat collecting device according to claim 1, wherein the light receiving surface of the whole film is sandwiched by an angle of less than 82.4 degrees, and the central angle dividing surface of the angle is provided with an infrared absorbing sheet device. When the sunlight is incident on the central corner plane, the incident angle of the projection onto the total reflection sheet is greater than

48.8 degrees.

The heat collecting device according to claim 1, wherein the total reflection sheet is provided in a plurality of sets of transitions.

The heat collecting device according to claim 2 or 3, wherein the heat collecting device and the water collector are provided on a roof, and the water reservoir is installed in the room.

The heat collecting device according to claim 2 or 3, wherein the water collecting device of the heat collecting device and the heat storage device water reservoir are provided with means for promoting circulation of water and liquid.

The heat collecting device according to claim 1, comprising means for interlocking with the sun tracker, wherein the light receiving surface of the total reflection sheet is rotatable with the sun.