JP2003161116A - Power generating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power generating system with a high energy efficiency, which efficiently utilizes exhaust heat or the like which is exhausted as unavailable energy, as an energy source and restoring it to effective electric power, without utilizing unused energy or generating any material that causes environmental destruction or the like. <P>SOLUTION: The power generating system 1 is equipped with a chamber 2 comprising a liquefying chamber 12 where a predetermined liquid medium 30 is stored, a vaporizing chamber 10 disposed opposite to a heat source 40 for generating the exhaust heat, a convective passage 14 which connects the vaporizing chamber to the liquefying chamber and convects gas vaporized in the vaporizing chamber toward the liquefying chamber, and a communicating part 20 which makes the vaporizing chamber and the liquefying chamber directly communicate without involving the convective passage and supplies the medium 30 stored in the liquefying chamber to the vaporizing chamber, a driver 16 disposed in the convective passage of the chamber and operated by the kinetic energy of the gas convected through the convective passage, and a power generator 4 activated by the power of the driver to generate electric power. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a power generation system.

[0002]

2. Description of the Related Art Currently, various types of power generation systems are known. For example, in thermal power generation and nuclear power generation, thermal power obtained by burning oil or natural gas or thermal energy from nuclear power is used to drive an engine, a turbine or the like, thereby obtaining driving power for a generator.

Examples of power generation systems utilizing natural phenomena include, for example, hydroelectric power generation using gravity energy of river water, tidal power generation using tide level rise and fall, and other geothermal power generation, wind power generation, solar power generation. Etc.

A battery is also a form of power generation system. In addition, in each of the power generation systems described above, there is a system that performs co-generation with cogeneration for supplying heat energy that is a by-product together with electric power.

[0005]

However, in thermal power generation and nuclear power generation, much of the heat energy during power generation does not become effective power, and ineffective heat and CO _{2 which} causes global warming are generated. I will let you.

In addition, a power generation system utilizing natural phenomena requires large-scale equipment and construction costs. Also, because the power plant and the place of consumption are often separated,
There are also many transmission losses.

[0007] In addition, the battery has few resources available,
Hazardous substances are generated. Further, in co-generation with heat, the efficiency of heat energy transfer is poor unless the power plant and the place of consumption are close.

As described above, the above-described conventional power generation system commonly obtains electric power by converting unused energy. Therefore, the more it is used, the more waste heat and environmentally destructive substances are generated.

Recently, the reuse (recycling) of resources has been called for. Under such circumstances, many hybrid cars and energy-saving products are being sold. However, hybrid cars and energy-saving products are only for improving energy efficiency, and are not in a form of reusing used energy or reactive energy.

The present invention has been made by paying attention to the above-mentioned circumstances, and does not utilize unused energy and does not generate environmentally destructive substances or the like, and exhaust heat or the like discharged as ineffective energy. An object of the present invention is to provide a power generation system with high energy efficiency that can be efficiently used as an energy source and can be returned to effective electric power.

[0011]

In order to solve the above-mentioned problems, a power generation system according to a first aspect of the present invention includes a liquefaction chamber for storing a predetermined liquid medium and cooling the vaporized medium to liquefy it. A vaporization chamber that is installed opposite to a heat source that generates exhaust heat that forms a temperature atmosphere near the boiling point of the medium, and that vaporizes the medium by heat from the heat source, connects the vaporization chamber and the liquefaction chamber, and A convection channel for convection of the gas vaporized in the vaporization chamber toward the liquefaction chamber, and a direct communication between the vaporization chamber and the liquefaction chamber without passing through the counter passage and stored in the liquefaction chamber A chamber having a communication part for supplying a medium to the vaporization chamber, a driver provided in the counter passage of the chamber and operated by kinetic energy of gas convection in the counter passage, and power of the driver. By Driven Te characterized by comprising a generator for generating electric power.

In the power generation system according to claim 1, the medium is vaporized and liquefied repeatedly,
Energy can be continuously applied to the driver. Therefore, the exhaust heat discharged as ineffective energy can be effectively used as an energy source and returned to electric power without using unused energy and without generating environmentally destructive substances and the like. That is, a form similar to energy recycling can be realized, which contributes to energy saving and environmental protection.

A power generation system according to a second aspect is the power generation system according to the first aspect, wherein the heat source is formed by exhaust heat of a mechanical device.

In the power generation system according to the second aspect of the present invention, the recycling of energy can be easily realized in the existing device or facility.

The power generation system described in claim 3 is characterized in that, in the power generation system described in claim 2, the exhaust heat is formed by a high temperature gas in a CO ₂ laser oscillator.

In the power generation system according to the third aspect of the present invention, the heat generated from the laser medium can be effectively used, and energy saving can be achieved in the system using the CO ₂ laser oscillator.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. As illustrated, the power generation system 1 according to the present embodiment includes an energy regeneration chamber 2 and a generator 4 driven by the energy obtained by the energy regeneration chamber 2. The generator 4 is connected to the load (or storage battery or the like) 50.

The chamber 2 is provided with a vaporization chamber 10 installed facing a high temperature portion such as mechanical equipment, that is, an exhaust heat portion 40, a liquefaction chamber 12 in which a predetermined medium 30 is stored, a vaporization chamber 10 and a liquefaction chamber 12. And a convection channel 14 for connecting the gas and the gas vaporized in the vaporization chamber 10 to convection toward the liquefaction chamber 12. In the convection channel 14, a steam turbine 16 is provided as a driving body that rotates by the kinetic energy of gas that convects in the convection channel 14. Further, a transmission shaft 18 that transmits the rotational force of the turbine 16 to the drive unit 4 a of the generator 4 is connected to the turbine 16. Here,
The “exhaust heat” means heat that is discharged as used energy or reactive energy among energy generated by natural phenomena or artificially.

Further, the vaporizing chamber 10 and the liquefying chamber 12 are directly communicated with each other by the communicating portion 20 without the intervening flow passage 14. The communication section 20 supplies the medium (liquid) 30 stored in the liquefaction chamber 12 to the vaporization chamber 10. Also, the communication part 2
0 means that the medium 30 is hardly stored in the vaporization chamber 10 and the amount of the medium 30 can be efficiently vaporized by the heat from the high temperature portion (exhaust heat portion) 40 transmitted to the vaporization chamber 10. The liquid medium 30 is supplied to.

The medium 30 stored in the liquefaction chamber 12 is preferably a liquid having a boiling point near room temperature and atmospheric pressure. For example, water (boiling point 100 ° C), isoprene (boiling point 33
C.), diethyl ether (boiling point: 35.degree. C.), dimethylbutane (boiling point: 50.degree. C.) and the like are suitable. Also, chamber 2
The inside is kept at a pressure that brings the medium 30 into a substantially boiling state. For example, the boiling point of water is 100 ° C at 1 atmosphere,
If the pressure is reduced, it can be lowered to several tens of degrees Celsius. Therefore, if the pressure in the chamber 2 is appropriately adjusted according to the boiling point of the medium 30,
The medium 30 can be sufficiently vaporized in the vaporization chamber 10 even if the heat exhausting section 40 is not excessively hot. Therefore, in general, the heat exhausting section 40 may have a temperature of about 40 ° C. or higher (in a general machine or the like, there are a lot of parts at 50 ° C. to 90 ° C.).

Next, the operation of the power generation system 1 having the above structure will be described. First, when the medium 30 stored in the liquefaction chamber 12 is supplied to the vaporization chamber 10 through the communication portion 20, the vaporization chamber 10 absorbs the exhaust heat from the high temperature portion (exhaust heat portion) 40 to remove the medium 30. Vaporize. The vaporized medium (vapor) 30 is supplied to the counter flow passage 14 as indicated by an arrow in the figure.
It flows through the inside toward the liquefaction chamber 12, and the kinetic energy thereof causes the steam turbine 16 provided in the counter flow passage 14 to rotate.

When the turbine 16 rotates, its rotational force is transmitted to the drive section 4a of the generator 4 via the transmission shaft 18. Therefore, the generator 4 generates electric power by the rotational force transmitted from the turbine 16, drives the load 50, or stores electric power in the storage battery. On the other hand, the gas medium 30 that has passed through the turbine 16 is cooled and liquefied in the liquefaction chamber 12 placed at, for example, room temperature, stored in the liquefaction chamber 12, and prepared for supply to the next vaporization chamber 10. A cooling unit 55 may be provided to forcibly cool and liquefy.

As described above, in the power generation system 1 of this embodiment, the liquefying chamber 12 in which a predetermined liquid medium 30 is stored and vaporized medium 30 is cooled and liquefied, and the medium 3 is used.
A vaporization chamber 10 that is installed so as to face a heat exhaust unit 40 as a heat source that generates exhaust heat that forms an atmosphere having a temperature near the boiling point of 0, and that evaporates the medium 30 by the heat from the heat exhaust unit 40.
And the vaporization chamber 10 and the liquefaction chamber 12 are connected and the vaporization chamber 10
The convection channel 14 that convects the gas vaporized in the liquefaction chamber 12 and the medium 30 that directly communicates the vaporization chamber 10 and the liquefaction chamber 12 without passing through the convection channel 14 and is stored in the liquefaction chamber 12 Is provided as a driver which is provided in the convection channel 14 of the chamber 2 and which is operated by the kinetic energy of gas convection in the convection channel 14. The turbine 16 and the generator 4 that is driven by the power of the turbine 16 to generate electric power are provided.

Therefore, the medium 30 can continue to give energy to the turbine 16 while repeating vaporization and liquefaction. Therefore, without using unused energy and without producing environmentally destructive substances,
Exhaust heat discharged as ineffective energy can be effectively used as an energy source to be returned to electric power. That is, it is possible to realize a form close to energy recycling,
It helps save energy and protect the environment.

Further, in the present embodiment, the used energy and the reactive energy of the mechanical equipment are particularly reused. Therefore, energy recycling can be easily realized in existing equipment.

In this embodiment, the turbine 1 is used as a driving body that operates by the kinetic energy of the gas medium 30.
However, instead of the turbine 16, a driving body such as a piston that reciprocates may be used. Further, in the present embodiment, the turbine 16 is installed in the gas phase, but it may be installed in the liquid phase as long as it can be taken out as convection energy. Further, in the present embodiment, the generator 4 may be a direct drive type.
Further, in the present embodiment, the exhaust heat section 40 is formed by a high temperature section such as mechanical equipment, but it goes without saying that any heat source realized in daily life, production activities, etc. can be used as the exhaust heat section 40.

FIG. 2 shows a second embodiment of the present invention. As illustrated, the power generation system 1A according to the present embodiment
Is a housing 2A forming an energy regeneration chamber
And a generator 4A installed on the housing 2A and driven by the energy obtained by the housing 2A.

The interior of the housing 2A is divided by a partition wall 70 into a lower vaporization chamber 10A and an upper liquefaction chamber 12A. In this case, the vaporization chamber 10A is installed so as to face the high temperature part of the mechanical equipment, that is, the heat exhaust part 40. Also,
A predetermined medium 30 is stored in the liquefaction chamber 12A. Further, the partition wall 70 connects the vaporization chamber 10A and the liquefaction chamber 12A, and also vaporizes the gas vaporized in the vaporization chamber 10A.
The convection channel 14A for convection toward 2A is formed.
Further, a steam turbine 16A as a driving body that is rotated by the kinetic energy of the gas convection in the convection path 14A is provided in the convection path 14A. Turbine 16
The rotating shaft 72 of A is the bearing 7 provided in the housing 2A.
It is rotatably supported by 4. Also, the rotating shaft 7
One end of 2 extends from the housing 2 </ b> A into the generator 4 and also serves as the rotation shaft of the rotation drive unit 4 b of the generator 4.

Further, the vaporizing chamber 10A and the liquefying chamber 12A are directly communicated with each other by the communicating portion 20A without the intervening flow passage 14A. The communication unit 20A supplies the medium (liquid) 30 stored in the liquefaction chamber 12 to the vaporization chamber 10A via the control valve 80. In this case, the control valve 80 hardly stores the medium 30 in the vaporization chamber 10A and the vaporization chamber 1
The liquid medium 30 is supplied to the vaporization chamber 10A in an amount capable of efficiently vaporizing the medium 30 by the heat from the high temperature portion (exhaust heat portion) 40 transmitted to 0A. In addition, in FIG. 2, it seems that the gas is supplied only to the left side of the vaporizing chamber 10A.
Plural pieces are evenly distributed so that they can be evenly supplied to 0A.

The inside of the housing 2A is maintained at a pressure that brings the medium 30 into a substantially boiling state. Further, the housing 2A is provided with a cooling unit 55 on the upper outside of the liquefaction chamber 12A. The cooling section 55 stores cooling water 59 in the concave accommodation section 55a, and the liquefaction chamber 12 is cooled by the cooling water 59 or its vaporization heat through the wall of the housing 2A.
Cool the inner wall of A. Of course, by natural cooling, liquefaction chamber 1
2A may be cooled.

Next, the operation of the power generation system 1A having the above structure will be described. First, when the medium 30 stored in the liquefaction chamber 12A is supplied to the vaporization chamber 10A through the control valve 80, the vaporization chamber 10A absorbs the exhaust heat from the high temperature section (exhaust heat section) 40 to remove the medium 30. Vaporize. The vaporized medium (vapor) 30 expands and ascends and diffuses in the counter passage 14A toward the liquefaction chamber 12A as indicated by an arrow in the figure, and is provided in the counter passage 14A by its kinetic energy. The steam turbine 16A is rotated.

When the turbine 16A rotates, the rotary drive unit 4b of the generator 4 also rotates via the rotary shaft 72.
Therefore, the generator 4 generates electric power by the rotational force of the rotary drive unit 4b to drive a load or store electric power in a storage battery. On the other hand, the gas medium 30 that has passed through the turbine 16A is cooled by the cooling unit 55 in the cooling chamber 12
The heat is taken away by the inner wall of A to be liquefied, stored in the liquefying chamber 12A, and prepared for the next supply to the vaporizing chamber 10A.

As described above, the power generation system 1A of this embodiment also has basically the same configuration as that of the first embodiment, so that the same operational effect as that of the first embodiment can be obtained. it can.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, CO is used as the exhaust heat unit (high-temperature heat source).
₂ The high temperature gas in the laser oscillator is used. As shown, the CO ₂ laser oscillator 100 includes a plasma forming chamber 1
02, the gas outlet 102a and the gas inlet 102b of the plasma forming chamber 102 are connected to each other, and a gas (a mixed gas of CO ₂ , N ₂ , He and the like) as a laser medium is blower 104.
And a circulation path 106 that circulates the fluid. In the plasma forming chamber 102, plasma is generated by the discharge electrode 108 connected to the power supply 110.

In such a CO ₂ laser oscillator 100, the temperature of the gas as the laser medium is high at the portion of the circulation path 106 near the gas outlet 102a of the plasma forming chamber 102. Therefore, in the present embodiment, the portion of the circulation path 106 through which the high temperature gas flows is used as the heat exhausting section 40, and the power generation system 1, 1A of the first or second embodiment is arranged so as to face the heat exhausting section 40. It is installed. In this case, it goes without saying that the vaporization chambers 10 and 10A face the heat exhausting section 40.

As described above, in this embodiment, the high temperature gas in the CO ₂ laser oscillator 100 is used as the heat exhausting section 40 for the power generation systems 1 and 1A of the first or second embodiment. Therefore, it is possible to effectively use the heat generated from the laser medium and to save energy in the system using the CO ₂ laser oscillator.

[0037]

As described above, according to the power generation system of the first aspect, the medium can continue to give energy to the driving body while repeating vaporization and liquefaction. Therefore, the exhaust heat discharged as ineffective energy can be effectively used as an energy source and returned to electric power without using unused energy and without generating environmentally destructive substances and the like. That is, a form similar to energy recycling can be realized, which contributes to energy saving and environmental protection.

According to the power generation system of the second aspect, the same effect as that of the first aspect can be obtained, and the energy can be easily recycled in the existing apparatus or facility.

According to the power generation system described in claim 3,
Thus, the same effect as that of claim 2 is obtained, and
The heat generated from the laser medium can be effectively used,
CO _TwoSaving energy in a system using a laser oscillator
Can be planned.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a power generation system according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a power generation system according to a second embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a power generation system according to a third embodiment of the present invention.

[Explanation of symbols]

1,1A power generation system 2 chamber 2A housing (chamber) 4 generator 10,10A vaporization chamber 12,12A Liquefaction chamber 14,14A counter flow path 16,16A turbine (driver) 20,20A communication part 30 medium

Claims (3)

[Claims] 1. A liquefaction chamber for storing and liquefying a vaporized medium in which a predetermined liquid medium is stored, and a heat source for generating exhaust heat that forms a temperature atmosphere near the boiling point of the medium are installed to face each other. A vaporization chamber that vaporizes the medium by heat from the heat source, a convection path that connects the vaporization chamber and the liquefaction chamber and convects the gas vaporized in the vaporization chamber toward the liquefaction chamber, and the convection A chamber having a communication part that directly communicates the vaporization chamber and the liquefaction chamber without passing through a passage and supplies the medium stored in the liquefaction chamber to the vaporization chamber; A power generation system, comprising: a drive body that is provided in the vehicle and that is operated by the kinetic energy of gas that convects in the convection path; and a generator that is driven by the power of the drive body to generate electric power. 2. The power generation system according to claim 1, wherein the heat source is formed by exhaust heat of a mechanical device. 3. The power generation system according to claim 2, wherein the exhaust heat is formed by a high temperature gas in a CO ₂ laser oscillator.