JP6302694B2 - Solar power generator - Google Patents

Description

  The present invention relates to a solar thermal power generation apparatus.

  In recent years, awareness of renewable energy such as sunlight, solar heat, wind power, geothermal heat, and tidal power has increased due to fossil fuel depletion problems, rising crude oil prices, energy security reviews, global warming problems, etc. Yes. One type of renewable energy is solar power generation using solar heat obtained by concentrating sunlight.

  With solar thermal power generation, solar thermal energy is collected by a reflecting mirror or the like, and electric power is generated using this solar thermal energy. One such solar thermal power generation system is a tower type solar thermal power generation (see, for example, Patent Document 1).

JP 2009-218383 A

  However, since solar thermal power generation uses solar thermal energy, there is a problem in that stable power supply cannot be achieved when there is no solar thermal energy depending on the weather and sunshine hours.

  In addition, since the heat collecting tubes that collect solar thermal energy are arranged over a long distance and in a wide range, there is a problem that heat loss is large and equipment costs are increased.

  This invention is made | formed in view of such a situation, Comprising: The solar thermal power generator which can supply the electric power stably with a simple structure with few heat losses is provided.

The present invention includes a tank whose wall is made of artificial ore and configured to contain a liquid, a solar heating apparatus that heats the tank using solar thermal energy, and a vapor generated by heating the liquid in the tank. Providing a solar power generation device comprising: a steam power generation device that generates electricity, an auxiliary heating device configured to auxiliary heat the tank using electric energy stored by the steam power generation device in the absence of solar thermal energy, and It is.

  The artificial ore is also characterized in that it is manufactured by adding metal and calcium to silicon or a silicon compound, and melting and cooling repeatedly.

  In addition, the tank wall is also characterized by being made of artificial ore and silicon carbide.

  The solar heating device is also characterized in that the tank is heated using a reflector.

  The reflector is also characterized in that it can be swung in response to the movement of the sun so that solar thermal energy can always be irradiated in the tank direction.

  The steam extracted from the tank is also characterized in that it is configured to generate electric power by adjusting the pressure by a pressure adjusting device and driving the turbine.

  A microwave irradiation device is provided for auxiliary heating of the tank, and the microwave irradiation device is also characterized in that it is configured to operate with electric energy stored by the steam power generation device.

According to this invention, the wall body is made of artificial ore , the tank is configured to contain the liquid, the solar heating device that heats the tank using solar thermal energy, and the steam generated by heating the liquid in the tank. A steam power generation device for taking out and generating electricity, and an auxiliary heating device configured to auxiliary heat the tank using the electric energy stored by the steam power generation device in the absence of solar thermal energy, especially artificial ore Is manufactured by adding metal and calcium to a silicon compound and repeatedly melting and cooling, and the solidifying agent is mainly composed of glass or the like, so that the heat storage property of the tank body can be improved and heat loss is reduced, and the inside of the tank This heat fluid can be kept at a high temperature, so that the power generation efficiency can be improved.

  In addition, since the heat collecting tubes and the like are not installed in a wide range, there is an effect that they can be provided at a low cost.

  Further, even when there is no solar thermal energy, the tank can be heated by irradiating microwaves, so that there is an effect that power can be generated simply without being influenced by the weather or the daylight hours.

It is a figure for demonstrating the electric power generating apparatus of this invention.

  If this invention is explained in full detail based on drawing, FIG. 1 is explanatory drawing of the solar thermal power generation apparatus of this invention.

As shown in FIG. 1, the solar thermal power generation apparatus of the present invention includes a tank whose wall is made of artificial ore and configured to contain a liquid, a solar heating apparatus that heats the tank using solar thermal energy, and a tank. And a steam power generation device that generates electricity by taking out the steam generated by heating the liquid inside. In addition, when there is no solar thermal energy, it is configured such that power can be generated by an auxiliary heating device configured to auxiliaryly heat the tank using electric energy stored by the steam power generation device, and stable power can be supplied. ing.

  As shown in FIG. 1, the tank 3 of the present invention has an inner wall made of a substantially cylindrical cylindrical body, and the outer wall of the tank 3 is covered with a fireproof block 1a formed of artificial ore 1 and silicon carbide. Formed.

  The artificial ore 1 described above is manufactured by adding metal and calcium to silicon or a silicon compound, and melting and cooling repeatedly.

  Specifically, first, about 80% by weight of powdered silicon or silicon compound is charged into a vacuum melting furnace heated to 1650 ° C. to 1680 ° C. under a substantially vacuum state, and then about 5% by weight of powdered silicon Iron, about 5% by weight of powdered aluminum, and about 5% by weight of calcium are stirred and mixed in order at intervals of 3 to 5 minutes, and then the melt is taken out from the vacuum melting furnace and naturally cooled at room temperature. To produce an ore mass. As described above, the artificial ore 1 used in the present invention is characterized by being manufactured by cooling the above-described raw materials after melting. As another manufacturing method, the ore 1 may be manufactured by gradually repeating melting at a high temperature such that the above-described raw materials are cooled after melting and further melted at a high temperature.

  The refractory block 1a can be processed into a plate shape or the like by mixing and sintering silicon carbide powdered into the pulverized artificial ore 1 described above. Further, a combination of a plurality of the fire-resistant blocks 1a thus processed, and a fire-resistant structure in which the outer wall of the tank 3 is formed so as to be able to cover the stainless steel cylindrical body as the inner wall of the tank 3 as shown in FIG. Block 1a.

  Thus, the refractory block generated from the artificial ore 1 and silicon carbide maintains strength even when processed into a plate shape, improves heat resistance and wear resistance, and further stores heat stored in the artificial ore 1. And diffusibility can also be improved.

  The fireproof block 1a can withstand heat of 3600 degrees or more. In addition, solar heat can be diffused evenly throughout the tank and stored for a long time. Furthermore, since the fireproof block 1a does not deteriorate over time, it can be used for a long time.

  A liquid such as water is accommodated in the tank 3 and the tank 3 is heated to generate steam.

  As a means for heating the tank 3, a solar heating device 5 using solar energy is used. The solar heating device 5 according to the present embodiment is configured to surround the tank 3 with a reflector 11 and irradiate the tank 3 with reflected light that reflects sunlight to heat the tank 3.

  When the reflector 11 is a mirror-finished aluminum material coated with a resin film, the reflectivity and durability are good.

  In addition, when the reflector 11 that can swing freely according to the movement of the sun according to the season, weather, time zone, etc. is used, the tank 3 can be irradiated with sunlight efficiently and a stable power supply can be achieved. It becomes. That is, it is preferable to use a so-called heliostat for the reflecting plate 11.

  By irradiating the tank 3 with sunlight by the reflecting plate 11, the fireproof block 1a made of the artificial ore 1 as the outer wall is warmed. This refractory block 1a has excellent heat storage and diffusibility, and heats the water stored in the tank 3 to a high temperature to generate steam. The water vapor thus generated is taken out from the ceiling wall 3 ′ of the tank 3 and sent to the steam power generation device 7.

  The steam generator 7 includes a pressure regulator 13 for adjusting the steam generated in the tank 3, a turbine 15 rotated by the steam adjusted by the pressure regulator 13, and a generator 17 connected to the turbine 15. The

  The pressure regulator 13 is a governor that adjusts steam to be sent to the turbine 15 in the present embodiment, a so-called governor. That is, the steam amount is adjusted by detecting the speed of the turbine shaft.

  The turbine 15 rotates the impeller of the turbine 15 by the steam generated in the tank 3 in this embodiment, and is a so-called steam turbine. By rotating the turbine 15, electric energy is generated by rotating the generator 17 connected by the turbine shaft.

  Further, the steam used when the turbine 15 is rotated is cooled in the tank 3 by the cooling device 21 using seawater or the like to be converted into a liquid and reused.

  Thus, the electric power that is the obtained electric energy can be generated stably as long as there is solar thermal energy. However, solar thermal energy cannot always be obtained stably and depends on the season, weather and time. Therefore, the auxiliary heating device 9 is provided in the solar thermal power generation device of the present invention.

  The auxiliary heating device 9 in this embodiment is a microwave irradiation device 9a. The microwave irradiation device 9a is connected from the generator 17 via the control device 19, and operates using the electric power generated by the generator as shown in FIG. In addition, you may operate by supplying electric power from the outside.

  Here, the control device 19 is based on a power storage device that stores electric power generated during sunlight irradiation, a solar light determination device that determines and measures sunlight irradiation with, for example, an illuminance meter, and a determination result. There are a device for sending a signal for sending the electric power stored in the microwave irradiating device 9a, a device for judging at which timing the microwave is radiated to the tank 3, and a device for giving a signal for irradiating.

  One microwave irradiation device 9a can distribute thermal energy to the entire tank 3 due to the heat diffusibility of the refractory block 1a, but a plurality of microwave irradiation devices 9a may be used. If the number that can be irradiated uniformly is arranged on the entire tank 3, irradiation can be performed in a short time and with less electric power.

  The fireproof block 1a, which is the outer wall of the tank 3, has a property of being converted into thermal energy when irradiated with microwaves. That is, when microwaves are irradiated to the refractory block 1a, the dielectric in the refractory block 1a vibrates and heats violently due to the electric field generated by the microwave, and the dielectric itself generates heat due to frictional heat.

  The fireproof block 1a irradiated with the microwave can heat and evaporate the water in the tank 3 to generate steam.

  As described above, since the microwave irradiation device 9a is used as the auxiliary heating device 9, the electricity conversion efficiency is better than heating the tank 3 with a heater or the like, and the water in the tank 3 can be heated.

  That is, the heating using the microwave is a method in which the microwave power is absorbed by the dielectric in the refractory block 1a and is self-heated from the inside of the dielectric, so compared with the conventional heating method by heat conduction or radiation, Heat efficiency is high and heat treatment can be performed in a short time. In addition, power consumption is low and costs can be reduced.

  Moreover, when solar thermal energy cannot be obtained, for example, even at night, predetermined electrical energy can be supplied.

  In addition, it is also possible to use a nichrome wire heater, a far-infrared heater, or a radar as another embodiment instead of the above-described microwave irradiation device 9a. A nichrome wire heater, a far-infrared heater, or a radar generates electric energy from a steam power generation device 7 made of steam obtained by heating a fireproof block 1a made of artificial ore 1 and silicon carbide as outer walls with sunlight.

  Specifically, when solar heat cannot be used effectively by surrounding a nichrome wire heater, far-infrared heater, or radar directly or holding a certain gap on the outer peripheral wall of the tank 3 of the fireproof block 1a. Used as auxiliary heating device 9.

  Since this invention is comprised as mentioned above, it can always implement | achieve the stable electric power supply regardless of a weather, a season, and time.

  Note that the present invention is not limited to the above-described embodiment and the like. Among the configurations disclosed in the above-described embodiments and the like, the configurations that are mutually replaced or the combination is changed, known techniques, and the above-described embodiments. Also included are configurations in which the configurations disclosed in 1 are replaced with each other or combinations are changed.

DESCRIPTION OF SYMBOLS 1 Artificial ore 1a Refractory block 3 Tank 3 'Ceiling wall 5 Solar heating device 7 Steam power generation device 9 Auxiliary heating device 9a Microwave irradiation device 11 Reflector 13 Pressure regulator 15 Turbine 17 Generator 19 Control device 21 Cooling device

Claims (7)

A tank wall is made of artificial ore was constructed to contain a liquid,
A solar heating device that heats the tank using solar thermal energy;
A steam power generation device that generates electricity by removing steam generated by heating the liquid in the tank;
A solar thermal power generation device comprising: an auxiliary heating device configured to supplementally heat a tank using electric energy stored by a steam power generation device in the absence of solar thermal energy. 2. The solar thermal power generation apparatus according to claim 1, wherein the artificial ore is manufactured by adding metal and calcium to silicon or a silicon compound, and repeatedly melting and cooling. 3. The solar thermal power generation apparatus according to claim 1 or 2 , wherein the wall of the tank is made of artificial ore and silicon carbide . The solar thermal power generation device according to any one of claims 1 to 3, wherein the solar heating device is configured to heat the tank using a reflecting plate. The solar power generator according to any one of claims 1 to 4, wherein the reflector is swingable in accordance with the movement of the sun so that solar thermal energy can always be irradiated in the tank direction. The solar thermal power generation apparatus according to any one of claims 1 to 5, wherein the steam taken out from the tank is configured to generate electric power by adjusting a pressure by a pressure adjusting device and driving a turbine. The solar heat according to any one of claims 1 to 6, wherein a microwave irradiation device is provided for auxiliary heating of the tank, and the microwave irradiation device is configured to operate with electric energy stored by a steam power generation device. Power generation device.

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