WO2009049488A1

WO2009049488A1 - A method and a device for generation by solar energy

Info

Publication number: WO2009049488A1
Application number: PCT/CN2008/001663
Authority: WO
Inventors: Tuming You
Original assignee: Tuming You
Priority date: 2007-09-27
Filing date: 2008-09-27
Publication date: 2009-04-23
Also published as: CN101397982A

Abstract

A method and a device for generation by solar energy are provided. The method generally includes making sunlight irradiate water closed in the circulation line (1), making water flow in the circulation line (1), and using water flow in the circulation line (1) to drive a water turbine generator (4) for generating electricity. The generating process completely uses solar energy as driving force without any pollution, the device has simple structure and low cost of manufacture, and can be installed on the surface (10) of sea, river or lake to use the water in the sea, river or lake to cool the heated water in the circulation line (1) so that it can keep water in the circulation line (1) circulated continually for generating electricity without any additional cooling device.

Description

Method and device for generating electricity by using solar energy

Technical field

The present invention relates to a power generation method and apparatus, and more particularly to a method and apparatus for generating electricity using solar energy.

Background technique

At present, solar power generation is mainly carried out by using solar panels. The solar panels are mainly based on photosensitive semiconductor materials, and their working principle is to generate electricity by photoelectric conversion reaction after the photoelectric materials absorb light energy. When the semiconductor material receives light, the holes of the N-type semiconductor in the PN junction move toward the P-type region, and the electrons in the P-type region move toward the N-type region, thereby forming a current from the N-type region to the P-type region, and then A potential difference is formed in the PN junction, which forms a power source. Although solar cells have matured from manufacturing and application technologies, their manufacturing costs are relatively low, several times that of conventional power generation devices, and the thermoelectric conversion efficiency is low, only about 10%.

Another method is to use solar energy to heat the boiler and use the steam generated by the boiler to generate electricity through the steam turbine. For example, Chinese Patent No. 96115907. 3 discloses a "solar power generation method" in which a plurality of concave mirrors are used to form a mirror array, and the reflected sunlight is collected by a convex lens and then transmitted to a solar boiler by a light guide tube. In the casing, the solar boiler is heated to generate steam, and the steam boosting system drives the steam turbine, and the steam turbine drives the generator to generate electricity.

Further, as disclosed in Chinese Patent No. 200410068900. No. 6, a method and apparatus for generating electricity by using solar energy is disclosed, which uses solar energy to heat water to a temperature of 60 degrees to 80 degrees, and then reheats the low boiling point working medium with water. The vaporization produces high-pressure steam, drives the steam turbine, drives the generator to generate electricity, and then the steam enters the condenser to condense into a liquid state, which is then pumped into the evaporator for the next cycle of power generation. This method is similar to the principle of the previous method.

Summary of the invention

The main object of the present invention is to provide a method and apparatus for heating water to convect and circulate, thereby causing the water flow to drive the water turbine to generate electricity. The invention adopts the following technical solutions: A method for generating electricity by using solar energy, comprising:

1) illuminate the water enclosed in the circulation line by the sunlight to make the water flow in the circulation line; .2) use the flow of water in the circulation line to drive the hydroelectric generator to generate electricity.

The foregoing method for generating electricity by using solar energy causes sunlight to be irradiated to a part of the circulation pipeline; the circulation pipeline portion is partially immersed in the sea surface, the river surface or the lake surface, and the part irradiated by sunlight is located above the sea surface, the river surface or the lake surface.

A device for generating electricity by using solar energy, comprising: a circulation pipeline partially immersed in the sea surface, the river surface or the lake surface, partially exposed above the sea surface, the river surface or the lake surface, and the exposed portion is partially exposed to sunlight to absorb heat; the hydroelectric generator, Installed in the circulation line, driven by the circulation line water flow to generate electricity.

In the foregoing device for generating electricity by using solar energy, a circulation pipe is partially formed by a sunlight to form a hot water suction tank, and an outer circumference of the heat absorption tank is covered with a heat absorption layer; the circulation pipeline is submerged below the sea surface, the river surface or the lake surface. The part forms a cooling water tank.

Further, a water outlet is formed above the hot water tank, and a water inlet is formed below.

Further, the water turbine generator is installed near the water outlet of the hot water tank.

It can be seen from the above description of the structure of the present invention that the present invention has the following advantages compared with the prior art: First, the water is heated by solar energy to circulate the water, and the water turbine is used to generate electricity through the circulating water flow, and the power generation process is completely used. Solar energy is the driving force, without any pollution; Second, its structure is simple, and the manufacturing cost is low; Third, it can be installed on the vast sea surface, river surface or lake surface, using sea water, river water or lake water to cool the heated water in the circulation pipeline. In order to allow the water in the circulation line to continue to circulate for power generation without additional cooling equipment.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

detailed description

Specific embodiments of the present invention will be described below with reference to the drawings.

Referring to Fig. 1, an apparatus for generating electricity by using solar energy, the main structure includes a circulation line 1 and a water wheel Motor 4. The circulation line 1 is filled with water or other heated convection water. The circulation line 1 is partially submerged below the sea surface 10 and partially exposed above the sea surface 10. The portion of the circulation line 1 submerged below the sea surface 10 forms a cooling water tank 3; the portion of the circulation line 1 exposed above the sea surface 10 forms a hot water tank 2, and the outer circumference of the heat absorption tank 2 is covered with a heat absorption layer. A water outlet is formed above the hot water tank 2, and a water inlet is formed below. A water turbine generator 4 is provided near the water outlet of the hot water tank 2.

The above-mentioned device using solar power can be fixedly mounted on the sea surface near the coast through a support frame, and the support frame is fixed on the sea floor, or can be suspended on the sea surface by the floating device, as long as the hot water tank 2 is located above the sea surface 10 and the cooling water tank 3 is located below the sea surface 10. The sunlight is irradiated on the surface of the hot water tank 2, and the water in the hot water tank 2 is convected by the heat, flows upward from the water outlet above it, and flows through the pipeline to the cooling water tank 3 below the sea surface 10, after cooling The flow also flows into the hot water tank 2, thereby forming a circulating flow, and the direction of the arrow in Fig. 1 is the flow direction of the water. The hydro-generator 4 is driven by water flowing in the circulation line 1 to generate electricity.

As can be seen from the above, the key to the power generating apparatus and method is that there is a cooling water tank 3 immersed under the sea surface 10 and cooled by sea water, and a hot water tank 2 which is exposed to the sun above the sea surface 10, in the hot water tank 2 A circulation line 1 is established between the cooling water tank 3 and the water to be convected and then flows in the circulation line 1 to drive the hydro-generator 4 to generate electricity. The sun can continuously supply heat to the hot water tank 2, and the flowing sea water can continuously impact the cold water tank 3 immersed in the sea, and accelerate the heat exchange between the water and the sea water in the cold water tank 3 to accelerate the cooling. Therefore, the thermal energy of the sun, the low temperature of the seawater and the kinetic energy provide a power source for the present invention.

It should be noted that a plurality of circulation lines 1 can be established between the hot water tank 2 and the cooling water tank 3, and each of the circulation lines 1 is provided with a water turbine generator 4, which can improve the power generation efficiency.

The cold water tank 3 of the present invention may also be composed of one or more sets of pipe parts, and is made of a material with good heat dissipation effect to ensure the heat dissipation effect of the cold water tank 3, so that the water temperature in the cold water tank 3 is always lower than that in the hot water tank 2. Water temperature.

In addition, the power source of the power generating device is to heat the hot water tank 2 by using solar energy. In the embodiment, the water in the hot water tank 2 is heated by the outer circumference of the hot water tank 2, but it is not limited thereto, and the existing technology can be used to collect solar energy into heat energy and absorb heat. The water in the water tank 2 is heated.

The power generating device can also be installed on the river surface or the lake surface, and theoretically it can be installed on the water surface.

The above is only the specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by this concept should be in violation of the scope of protection of the present invention.

Industrial applicability

The invention discloses a method and a device for generating electricity by using solar energy, which mainly comprises irradiating sunlight to water sealed in a circulation pipeline, causing water to flow in the circulation pipeline, and driving the water turbine to generate electricity by using the flow of water in the circulation pipeline. Machine power generation. The power generation process uses solar energy as the driving force without any pollution. The structure is simple, the manufacturing cost is low, and it can be installed on the vast sea surface, river surface or lake surface. The seawater, river water or lake water is used to heat the heated water in the circulation pipeline. Cooling, so that the water in the circulation pipeline can be continuously circulated to generate electricity without any additional cooling device, and has good industrial applicability.

Claims

& Wo J wants

A method of utilizing solar power to generate electricity, comprising:

1) illuminating the water sealed in the circulation line by the sunlight, so that the water flows in the circulation line;

2) The hydroelectric generator is used to generate electricity by using the flow of water in the circulation line.

2. A method of generating electricity by using solar energy according to claim 1, wherein: the sunlight is irradiated to a part of the circulation pipeline; and the circulation pipeline is partially immersed in the sea surface, the river surface or the lake surface, and the sunlight is received. The part of the illumination is located above the sea, the river or the lake.

3. A device for generating electricity using solar energy, comprising:

The circulation pipeline is partially submerged below the sea surface, the river surface or the lake surface, and partially exposed to the sea surface, the river surface or the lake surface, and the exposed portion is partially exposed to sunlight to absorb heat;

The hydroelectric generator is installed in the circulation pipeline and is driven by the circulation pipeline water flow to generate electricity.

4. The apparatus of claim 3, wherein the circulating pipeline is partially exposed to sunlight to form a hot water tank, and the outer circumference of the hot water tank is covered with a heat absorbing layer; The cooling water tank is formed by immersing the pipeline in the sea surface, the river surface or the surface below the lake surface.

A device for generating electricity by using solar energy according to claim 4, characterized in that: a water outlet is formed above the hot water tank, and a water inlet is formed below.

6. The apparatus according to claim 5, wherein the hydroelectric generator is installed near the water outlet of the hot water tank.

7. The apparatus for generating electricity by using solar energy according to claim 4, wherein: the cold water tank is made of a heat dissipating material, and the water outlet is connected to the water inlet of the hot water tank through a pipe; the water inlet is connected by a pipe connection at the bottom. The outlet of the hot water tank.

8. The apparatus for generating electricity by using solar energy according to claim 7, wherein the cold water tank is placed below the sea surface, the river surface or the lake surface having a low temperature, and the water in the cold water tank is thermally exchanged with sea water, lake water or river water.