CN101776326B - Solar water heater installation - Google Patents

Abstract

A solar water heater device includes a thermoelectric conversion module, a heat collector, a heat exchanger, a light focusing plate and a power system. The heat collector is arranged on a first side of the thermoelectric conversion module, and the heat collector has a heat concentration point. The heat exchanger is arranged on a second side of the thermoelectric conversion module opposite to the first side. The light focusing plate is arranged on the heat collector to focus light to the heat concentration point of the heat collector. The power system is connected to the thermoelectric conversion module to process the electric energy generated by the thermoelectric conversion module.

Description

Solar water heater installation

technical field

The invention relates to a solar water heater device, and in particular to a solar water heater device with a thermoelectric conversion module.

Background technique

With the development of science and technology and economy, the use of energy, such as oil, natural gas, coal, etc. are all polluting energy, which will lead to increasingly serious damage to the environment. Moreover, these polluting energy sources are gradually facing a shortage problem. Therefore, non-polluting and renewable energy sources, such as hydropower, wind power, solar energy, and bioenergy, are getting more and more attention, and solar energy is the focus of most attention.

The technology of converting solar energy into thermal energy can be used as domestic hot water, which has the effect of energy saving and clean energy. Solar water heaters are generally divided into two categories, one of which uses a heat exchanger to store heat in a hot water tank, and then releases hot water when hot water is needed. However, this type of solar water heater only has the function of making hot water. There is no power generation effect. The other is to use the photovoltaic effect (photovoltaic effect) of solar cells to generate voltage to store electricity, and then use this electricity to heat hot water. However, solar cells need to consider the spectrum of sunlight and cannot operate at high temperatures.

Contents of the invention

In view of this, the present invention provides a solar water heater device, which can produce hot water while generating electricity, so as to overcome the problems that existing solar water heaters can only produce hot water or cannot operate at high temperatures.

The invention provides a solar water heater device, which includes a thermoelectric conversion module, a heat collector, a heat exchanger, a light focusing plate and a power supply system. The heat collector is arranged on the first side of the thermoelectric conversion module, and the heat collector has a heat concentration point. The heat exchanger is disposed on a second side of the thermoelectric conversion module opposite to the first side. The light focusing plate is arranged on the heat collector, and is used for concentrating light to the heat concentration place of the heat collector. The power system is connected to the thermoelectric conversion module for processing the electric energy generated from the thermoelectric conversion module.

In an embodiment of the present invention, the above-mentioned thermoelectric conversion module includes at least one first electrode, at least one second electrode, and a thermoelectric material located between the at least one first electrode and the at least one second electrode.

In an embodiment of the present invention, the aforementioned thermoelectric material includes an alloy structural material.

In an embodiment of the present invention, the above-mentioned alloy structure material has a Half-Heusler structure, a skutterudite structure or a bismuth telluride structure.

In an embodiment of the present invention, the aforementioned thermoelectric material is, for example, a material selected from the group consisting of a multi-element alloy system, a multi-element alloy system with addition of carbides, nitrides or oxides, and combinations thereof.

In an embodiment of the present invention, the aforementioned thermoelectric material includes an alloy composed of titanium, nickel and tin.

In an embodiment of the present invention, the aforementioned thermoelectric material includes an alloy composed of skutterudite.

In an embodiment of the present invention, the aforementioned thermoelectric material includes an alloy composed of tellurium and bismuth.

In an embodiment of the present invention, the above-mentioned solar water heater device further includes a heat dissipation device arranged between the thermoelectric conversion module and the heat exchanger.

In an embodiment of the present invention, the above solar water heater device further includes a heat storage device connected to the heat exchanger.

In an embodiment of the present invention, the above-mentioned power supply system includes a power storage device.

In an embodiment of the present invention, the above-mentioned heat exchanger includes a water-cooled heat exchanger.

Based on the above, the solar water heater device with thermoelectric conversion module of the present invention can generate electric energy and hot water at the same time, and the device is small in size and light in weight, which is an invention with both environmental protection and efficiency.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a solar water heater device according to an embodiment of the present invention.

FIG. 2 is a detailed schematic diagram of the thermoelectric conversion module in FIG. 1 .

Explanation of reference signs

100: Solar water heater installation

101: First side

102: Thermoelectric conversion module

103: second side

104: Collector plate

105: heat concentration place

106: heat exchanger

108: light focusing plate

110: power storage device

112: cooling device

114: Thermoelectric materials

116: first electrode

118: second electrode

120: heat storage device

Detailed ways

FIG. 1 is a schematic diagram of a solar water heater device according to an embodiment of the present invention. FIG. 2 is a detailed schematic diagram of the thermoelectric conversion module in FIG. 1 .

Referring to FIG. 1 , a solar water heater device 100 includes a thermoelectric conversion module 102 , a heat collector 104 , a heat exchanger 106 , a light focusing plate 108 and a power system 110 . The heat collector 104 is disposed on the first side 101 of the thermoelectric conversion module 102 , and the heat collector 104 has a heat concentration place 105 . The heat exchanger 106 is disposed on the second side 103 of the thermoelectric conversion module 102 opposite to the first side 101 . The light focusing plate 108 is disposed on the heat collector 104 for focusing light to the heat concentration point 105 of the heat collector 104 . The power system 110 is connected to the thermoelectric conversion module 102 for processing the electric energy generated from the thermoelectric conversion module 102 .

The thermoelectric conversion module 102 can be used as a direct conversion between thermal energy and electrical energy. It has no dynamic components, no combustion, and no refrigerant. The conversion of thermal energy and electric energy of the thermoelectric conversion module 102 is mainly based on the Seebeck effect. When there is a temperature difference between the two sides of the thermoelectric conversion module 102 (namely, the first side 101 and the second side 103), a diffusion current will be caused. , and generate a potential difference between the first side 101 and the second side 103 . The greater the temperature difference between the two sides of the thermoelectric conversion module 102, the greater the potential difference generated and the higher the efficiency. Therefore, the concentrating sunlight light source generated by the light focusing plate 108 can improve the first temperature of the thermoelectric conversion module 102. The temperature of side 101 is well suited for this application. In addition, the solar water heater device 100 of the present invention may also include a cooling device 112 arranged between the thermoelectric conversion module 102 and the heat exchanger 106 to accelerate the reduction of the temperature of the second side 103 of the thermoelectric conversion module 102, thereby improving the thermoelectric conversion. The temperature difference between the first side 101 and the second side 103 of the module 102 .

Next, the structure and characteristics of the thermoelectric conversion module 102 will be described in detail. Referring to FIG. 2 , the thermoelectric conversion module 102 includes at least one first electrode 116 , at least one second electrode 118 , and a thermoelectric material 114 located between the at least one first electrode 116 and the at least one second electrode 118 . The thermoelectric material 114 includes N-type thermoelectric materials and P-type thermoelectric materials alternately connected in series. The first electrodes 116 and the second electrodes 118 are, for example, metal plates, respectively disposed on both sides of the thermoelectric material 114, and the first electrodes 116 and the second electrodes 118 are arranged in a staggered manner, and are electrically connected to each other through the thermoelectric material 114. .

In one embodiment, the thermoelectric material 114 includes various alloy structure materials, such as a Half-Heusler structure, a skutterrudite structure, or a bismuth telluride structure.

In another embodiment, the thermoelectric material 114 can also be a material selected from the group consisting of a multi-element alloy system, a multi-element alloy system with addition of carbides, nitrides or oxides, and combinations thereof.

In yet another embodiment, the thermoelectric material 114 may be an alloy composed of titanium, nickel and tin, an alloy composed of skutterudite, or an alloy composed of tellurium and bismuth.

In the present invention, the thermoelectric material 114 with a half-Heusler structure has anti-oxidation and corrosion resistance properties on the one hand, so it can be operated in a high temperature environment of 300-1200K, on the other hand it has high stability, low pollution, and no pollution. It contains precious metals and low cost, so it is very suitable for the application of concentrated sunlight light source.

In addition, in the solar water heater device 100 of the present invention, the power system 110 is, for example, a power storage device, and the electric energy generated by the thermoelectric conversion module 102 can be sent to the power system 110 for indoor and outdoor use. The heat exchanger 106 is, for example, a water-cooled heat exchanger, which can generate hot water for general household use directly. Of course, the solar water heater device 100 of the present invention may also include a heat storage device 120 connected to the heat exchanger 106 for storing hot water for backup.

To sum up, the solar water heater device of the present invention utilizes concentrating sunlight light source and thermoelectric conversion module to produce electric energy, and at the same time, waste heat is produced into hot water to provide electricity and hot water supply for daily life, so as to achieve the purpose of energy saving. In addition, the solar water heater device of the present invention is small in size and light in weight, and the materials used are environmentally friendly, and can overcome the problems of existing solar water heaters that can only produce hot water or cannot operate at high temperatures, and are extremely competitive in the market.

Although the present invention has been disclosed above with embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the claims.

Claims (11)

1. A solar water heater device, comprising: Thermoelectric conversion module; a heat collector configured on the first side of the thermoelectric conversion module, and the heat collector has a heat concentration point; a heat exchanger configured on a second side of the thermoelectric conversion module opposite to the first side; a light focusing plate configured on the heat collector for focusing light to the heat concentration point of the heat collector; and The power system is connected to the thermoelectric conversion module and used for processing the electric energy generated by the thermoelectric conversion module. 2. The solar water heater device as claimed in claim 1, wherein the thermoelectric conversion module comprises at least one first electrode, at least one second electrode, and a thermoelectric material between the at least one first electrode and the at least one second electrode. 3. The solar water heater device of claim 2, wherein the thermoelectric material comprises an alloy structural material. 4. The solar water heater device as claimed in claim 3, wherein the alloy structure material has a semi-Heusler structure, a skutterudite structure or a bismuth telluride structure. 5. The solar water heater device as claimed in claim 2, wherein the thermoelectric material comprises an alloy composed of titanium, nickel and tin. 6. The solar water heater device as claimed in claim 2, wherein the thermoelectric material comprises an alloy composed of skutterudite. 7. The solar water heater device as claimed in claim 2, wherein the thermoelectric material comprises an alloy composed of antimony and bismuth. 8. The solar water heater device as claimed in claim 1, further comprising a cooling device disposed between the thermoelectric conversion module and the heat exchanger. 9. The solar water heater device of claim 1, further comprising a heat storage device connected to the heat exchanger. 10. The solar water heater device as claimed in claim 1, wherein the power system includes a power storage device. 11. The solar water heater device of claim 1, wherein the heat exchanger comprises a water-cooled heat exchanger.

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