CN102797651A - Energy-storage peak-and-valley-regulating all-weather solar-energy-balanced power generation device - Google Patents
Energy-storage peak-and-valley-regulating all-weather solar-energy-balanced power generation device Download PDFInfo
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- CN102797651A CN102797651A CN2012103102258A CN201210310225A CN102797651A CN 102797651 A CN102797651 A CN 102797651A CN 2012103102258 A CN2012103102258 A CN 2012103102258A CN 201210310225 A CN201210310225 A CN 201210310225A CN 102797651 A CN102797651 A CN 102797651A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Abstract
The invention discloses an energy-storage peak-and-valley-regulating all-weather solar-energy-balanced power generation device. The device absorbs the solar energy by using a solar heat collection device, stores the solar energy absorbed in the day through the phase state transformation of a phase change material, drives a driving medium of a screw expansion power machine through heating implemented by using the heat energy stored by the phase change material, and drives the screw expansion power machine to drive a power generator to carry out power generation by using the heated driving medium. The whole system of the device disclosed by the invention both can carry out all-day balanced stable power generation and can carry out power generation as required, and has the advantages of convenience and safety in use, balanced and consistent power generating capacity, environmental protection, reliability, higher solar energy utilization rate, and the like.
Description
Technical field
The invention belongs to field of solar thermal power generation, relate to the balanced electricity generating device of a kind of phase-change material accumulation of energy peak regulation paddy all-weather solar.
Background technique
Solar electrical energy generation research and development a lot of year, some demonstration power generation projects have have met or exceeded 20MW, main electricity-generating method has the photovoltaic generation of the photoelectricity direct generation of electricity, the solar energy tower type generating that has photo-thermal to produce the steam driven generator, slot type generating or the like.But why green energy resource such as solar energy, wind energy can not develop in a large number, and subject matter is exactly peaking problem, because the sun provides solar energy again daytime; And, with the cloudy day, rain, dust storm etc. influences light intensity and all can change, these variable effects generating efficiency; Make solar energy power generating always from unstable state, little when big during generated energy, the power supply of can't normally surfing the Net; Even non-online electricity consumption also can't normally be used.Running into the continuous cloudy day again rains, and will occur can not normal power generation, maybe can not generate electricity.Lot of domestic and foreign enterprises, the researcher tries one's best, and has attempted battery, and methods such as hydroelectric peak all the time can't high-power accumulation of energy, and it is high that the battery accumulation of energy removes cost, outside the life-span is short, also has secondary environmental pollution problem when scrapping; Hydroelectric peak except requiring the geographical position near the river, outside reservoir, the lake, also is that near the ecotope the reservoir, the protection of water resource bring a lot of new problems simultaneously then.Simultaneously, the generating efficiency that photovoltaic generation is extremely low is low also to be a great problem, and a lot of researchers are still attempting various methods of raising the efficiency.Utilize photo-thermal conversion to produce tower, the slot type generating of steam electric power, comprise the wind generating technology that utilizes wind energy, all exists generate electricity can not be stable problem.Do not solve the even powerup issue of solar energy and wind energy, utilize solar energy and wind energy power on a large scale, just can not be fast-developing.
Summary of the invention
The object of the present invention is to provide the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar, with the technical problem of the stable output of the low-cost balanced peak regulation that solves solar power system.
In order to realize the foregoing invention purpose, the technological scheme that the present invention adopted is following:
The balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar comprises solar heat collector, phase-change material storage device, screw expansion motor and generator; Thermal medium in the said solar heat collector is transported to the heat exchanger of phase-change material storage device through pipeloop and pump; The driven medium of said screw expansion motor is transported to the heat exchanger in the phase-change material storage device through pipeloop and pump, by this driven medium of phase-change material heating; This heated driven medium is transported to screw expansion motor, and the drive screw expansion motive power machine drives generator for electricity generation.
Thermal medium in the said solar heat collector also through another pipeloop and pump, directly links to each other with the driven medium pipeline of screw expansion motor, constitutes the loop of direct heating, on the return line of this direct heating, is provided with valve.
Said phase-change material storage device is selected one or more as required, and this phase-change material storage device has thermal insulation layer.
Thermal insulation layer is that the double-layer stainless steel intralamellar part vacuumizes or be filled with thermal-protective material, and this thermal-protective material comprises: a kind of in aerogel, styrofoam, PIC, polyacrylic amide, glass bead or the rock wool.
Thermal insulation layer is to be hung on outward on the phase-change material storage device by thermal-protective material.
Each phase-change material storage device comprises circulation heat-absorbing medium side heat exchanger and circulation driven medium side heat exchanger; Or built-in circulation driven medium vaporizer; When adopting a plurality of phase-change material storage device, adopt parallel connection or be connected in series; On the pipeloop between the heat pipe and solar energy heating medium memory case of solar heat collector, between solar energy heating medium memory case and phase-change material storage device, phase-change material storage device and screw expansion motor driven medium case, screw expansion motor driven medium case and the screw expansion motor, be respectively equipped with valve; All circulation loops and medium memory case all have the insulation processing layer.
Described phase-change material storage device is arranged on ground or underground.
Said phase-change material storage device, screw expansion motor driven medium case, solar energy heating medium memory case are provided with thermometer and pressure gauge.
Described screw expansion motor adopts single cycle to drive with two circulations and drives.
The positive beneficial effect that the present invention had:
1. adopt the solar heat collector thermal-arrest, with absorb solar energy heating phase-change material, phase-change material phase transformation savings heat energy utilizes phase-change material phase transformation heat release again, and the medium of heat driven screw expansion motor is to the hold temperature, pressure of wanting; Also can use the solar heat collector thermal-arrest daytime, with the medium of absorb solar energy heating drive screw expansion motive power machine, utilizes the media drive screw expansion motor generating of being heated.
2. according to being installed, this installs regional weather condition and user's request; Use the phase-change material of fair amount; Maybe be continuously cloudy 2 days like this area, be the equilibrium generating, need to use the enough stored energy confessions of the consumption generating in three days of phase-change material to use; If customer requirement accumulation of energy generating in enough 5 days is used, then use phase-change material quantity accumulation of energy to supply generating in five days to use.
3. do not have the waste gas and wastes discharging, pollution-free, environmental protection and energy saving can balancedly continuously be generated electricity, also can be according to generating of client's needs or generation outage.
Description of drawings
Fig. 1 is one embodiment of the present of invention structural representation;
Fig. 2 is an alternative embodiment of the invention structural representation.
Embodiment
The present invention is through the conversion savings solar energy that absorbed daytime of phase-change material phase; Utilize the medium of the heat energy heat driven screw expansion motor that phase-change material puts aside again; Drive generator for electricity generation with heated media drive screw expansion motor, the generating equalization stable.Promptly can the whole day balanced generating of whole system, generating when also can need generate electricity again, safety easy to use, the generated energy equilibrium always, environmental protection is reliable, solar energy utilization ratio is higher.
Below in conjunction with accompanying drawing, technological scheme of the present invention is specified as follows:
Embodiment 1
With reference to shown in Figure 1, the balanced electricity generating device of a kind of phase-change material accumulation of energy peak regulation paddy all-weather solar mainly comprises solar heat collector, phase-change material storage device, screw expansion motor, generator etc.; Between solar heat collector and phase-change material storage device, have pipeline to be connected, the medium transferring heat energy that is used in the circulating solar energy heat-collecting devcie is given phase-change material, makes the phase-change material phase-changing energy-storing; Between phase-change material storage device and screw expansion motor, there is pipeline to connect; The interior driven medium of screw expansion motor is used to circulate; Be heated to suitable temperature pressure by phase-change material in the heat exchanger of driven medium in the phase-change material storage device, the drive screw expansion motive power machine drives generator for electricity generation.
Described solar heat collector can be the pipe type solar energy water heater; Or plate-type solar water heater, the inside medium can be water or aqueous solution of inorganic matter or fluid organic material, or the mixture of fluid organic material; Also can make the liquid mixture of organic substance and inorganic matter
Described phase-change material is selected the existing technology commercially available prod for use, can be the pure substance or the mixture of organic substance or inorganic matter or organic substance and inorganic matter, can be pure metal or alloy; Alloy can be two kinds of mixtures to multiple metal, comprises being not limited to: the tetradecane, pentadecane; Cetane, the tetradecane and cetane and inorganic salts, inorganic salt solution; The inorganic salts saturated aqueous solution, the pure substance of inorganic salts supersaturated aqueous solution or binary mixture or multicomponent mixture, eutectic tin-lead alloy.The plumbous cadmium eutectic alloy of tin, bismuth cadmium tin eutectic alloy, bismuth slicker solder eutectic alloy, the plumbous cadmium eutectic alloy of bismuth, the plumbous cadmium bismuth of tin eutectic alloy, the plumbous cadmium indium of bismuth tin eutectic alloy, bismuth slicker solder mercury eutectic alloy.
Organic substance can be a paraffin, and binary mixture can be that the mass content of cetane is at 50～90% o'clock the tetradecane and cetane, used inorganic salts; Inorganic salt solution, the inorganic salts saturated aqueous solution, the pure substance of inorganic salts supersaturated aqueous solution or binary mixture or multicomponent mixture comprise zinc nitrate hexahydrate; Six hydration calcium chloride, Sodium acetate trihydrate, Disodium sulfate decahydrate; Sal soda, disodium hydrogen phosphate dodecahydrate, ten hydration disodium tetraborates; Potassium nitrate, the salt or the aqueous solution of aqueous sodium persulfate solution and Disodium sulfate decahydrate mixture etc.; Used nucleator comprises white clay, plumbago, and light metal powder such as aluminium; The adding nucleator also stirs, nucleator and inorganic salts, and inorganic salt solution, inorganic salts saturated aqueous solution, the weight percentage of inorganic salts supersaturated aqueous solution are 0.1～20%.
Embodiment 2
With reference to shown in Figure 2, the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar mainly comprises solar heat collector, phase-change material storage device, screw expansion motor, generator etc.; Between solar heat collector and screw expansion motor, there is pipeline to connect; Be used in the circulating solar energy heat-collecting devcie medium by day during solar energy heating with the medium of a part of heat driven screw expansion motor of absorbed energy; Be heated to the driven medium of suitable temperature pressure, the drive screw expansion motive power machine drives generator for electricity generation.Between solar heat collector and phase-change material storage device, there is pipeline to connect; The medium transferring heat energy that is used in the circulating solar energy heat-collecting devcie is given phase-change material; Make the phase-change material phase-changing energy-storing; Between phase-change material storage device and screw expansion motor, there is pipeline to connect, is used for to provide enough heat energy when driving circulation screw expansion motor medium the driven medium in the circulation screw expansion motor at night or cloudy day or solar heat collector; Be heated to suitable temperature pressure by phase-change material in the heat exchanger of driven medium in the phase-change material storage device, the drive screw expansion motive power machine drives generator for electricity generation.
Claims (9)
1. the balanced electricity generating device of accumulation of energy peak regulation paddy all-weather solar is characterized in that, comprises solar heat collector, phase-change material storage device, screw expansion motor and generator; Thermal medium in the said solar heat collector is transported to the heat exchanger of phase-change material storage device through pipeloop and pump; The driven medium of said screw expansion motor is transported to the heat exchanger in the phase-change material storage device through pipeloop and pump, by this driven medium of phase-change material heating; This heated driven medium is transported to screw expansion motor, and the drive screw expansion motive power machine drives generator for electricity generation.
2. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 1; It is characterized in that; Thermal medium in the said solar heat collector is also through another pipeloop and pump; Directly link to each other, constitute the loop of direct heating, on the return line of this direct heating, be provided with valve with the driven medium pipeline of screw expansion motor.
3. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 1 and 2 is characterized in that said phase-change material storage device is selected one or more as required, and this phase-change material storage device has thermal insulation layer.
4. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 3; It is characterized in that; Thermal insulation layer is that the double-layer stainless steel intralamellar part vacuumizes or be filled with thermal-protective material, and this thermal-protective material comprises: a kind of in aerogel, styrofoam, PIC, polyacrylic amide, glass bead or the rock wool.
5. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 3 is characterized in that thermal insulation layer is to be hung on the phase-change material storage device by thermal-protective material outward.
6. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 3 is characterized in that each phase-change material storage device comprises circulation heat-absorbing medium side heat exchanger and circulation driven medium side heat exchanger; Or built-in circulation driven medium vaporizer; When adopting a plurality of phase-change material storage device, adopt parallel connection or be connected in series; On the pipeloop between the heat pipe and solar energy heating medium memory case of solar heat collector, between solar energy heating medium memory case and phase-change material storage device, phase-change material storage device and screw expansion motor driven medium case, screw expansion motor driven medium case and the screw expansion motor, be respectively equipped with valve; All circulation loops and medium memory case all have the insulation processing layer.
7. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 1 and 2 is characterized in that described phase-change material storage device is arranged on ground or underground.
8. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 6; It is characterized in that said phase-change material storage device, screw expansion motor driven medium case, solar energy heating medium memory case are provided with thermometer and pressure gauge.
9. the balanced electricity generating device of a kind of accumulation of energy peak regulation paddy all-weather solar according to claim 1 and 2 is characterized in that, described screw expansion motor adopts single cycle to drive with two circulations and drives.
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| US9850883B1 (en) | 2017-08-10 | 2017-12-26 | Bajaura S.A. DE C.V. | Apparatus and method for generating electricity from integrated air flows and thermal energy |
| CN108180126A (en) * | 2018-01-12 | 2018-06-19 | 广州市麒鸿环保科技有限公司 | A kind of high-temperature phase-change accumulation of energy heat storage system |
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Application publication date: 20121128 |