CN101645670A - Integrated energy conversion and utilization system - Google Patents
Integrated energy conversion and utilization system Download PDFInfo
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- CN101645670A CN101645670A CN200910072833A CN200910072833A CN101645670A CN 101645670 A CN101645670 A CN 101645670A CN 200910072833 A CN200910072833 A CN 200910072833A CN 200910072833 A CN200910072833 A CN 200910072833A CN 101645670 A CN101645670 A CN 101645670A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides an integrated energy conversion and utilization system. A solar energy photovoltaic power generation system is directly connected with an electrical control system, a heat transfer medium of a solar thermal power generation system respectively enters into a high-temperature thermal storage system and an alkali metal thermoelectric direct converter integrated system after obtaining higher energy, then respectively enters into a condenser by a conductor temperature differential power generation system and returns to a solar thermoelectric system under the role of a pump, thereby forming a complete external circulation, wherein, the alkali metal thermoelectric direct converter integrated system and the semiconductor temperature differential power generation system are respectively connected with the electrical control system, and a valve is arranged on a pipeline which exits the solar thermal power generation system and enters the semiconductor temperature differential power generation system. The integrated energy conversion and utilization system carries out direct power generation by the solar energy photovoltaic power generation system and simultaneously utilizes the solar thermal power generation system for storing solar energy in the high-temperature thermal storage system by utilizing the heat transfer medium. The power generation is carried out through the energy cascade utilization way. The current direction of electrical energy is finally distributed by the electrical control system according to practical situations, thereby realizing the reasonable use of the electrical energy.
Description
(1) technical field
The present invention relates to a kind of energy conversion device, particularly a kind of integrated energy conversion and utilization system.
(2) background technology
Solar energy is most important basic power source in the various regenerative resources, and biomass energy, wind energy, solar energy, oceanic energy, water energy etc. are all from solar energy, and in a broad sense, solar energy comprises above various regenerative resource.Solar energy is a kind of as regenerative resource, then is meant the direct conversion and the utilization of solar energy.By conversion equipment solar radiant energy is converted to the solar energy utilization technique that belongs to of heat energy utilization, utilize the solar energy thermal-power-generating that is called that heat energy generates electricity again, also belong to this technical field; Belong to the solar energy generation technology to what solar radiant energy converted utilization of power to by conversion equipment, photoelectric conversion device normally utilizes the photovoltaic effect principle of semiconductor device to carry out opto-electronic conversion, therefore claims solar-photovoltaic technology again.
Solar energy thermal-power-generating and solar-photovoltaic technology greatly reduce the Application of Solar Energy scope because its operating efficiency is lower, therefore improve solar conversion efficiency and application efficiency and will become the next target of Application of Solar Energy in development.
Alkali metal thermo-electric direct converter (AMTEC) is a kind of with the energy conversion device of alkali metal (potassium, sodium) as working media.It is with ceramic material β " Al
2O
3Be the ion selectivity permeable membrane.The thermal power transfer that AMTEC can directly produce solar energy, external firing, radioisotope, reactor thermal source and waste heat becomes electric energy.Alkali metal working medium (liquid state or gaseous state) is moved in closed cycle system, and its transfer process characteristics are isothermal expansion/compression, and therefore isobaric heating can obtain high efficiency.AMTEC has the characteristics of clean noiseless, compact equipment, little, the suitable dispersed placement of maintenance in addition.Therefore both can recycle, and also can be separately be used for industrial generation, and can be used for the generating equipment or the civilian means of transportation of submarine navigation device as the calm type high-energy-density as the generating set of thermo-power station in the preposition of thermal power station.When being work, the shortcoming of AMTEC need certain temperature to guarantee.
If conductor or semi-conductive two ends temperature difference will produce thermoelectromotive force, be called Seebeck effect, utilize this principle generating just to be semiconductor temperature differential generating.Semiconductor temperature difference generator does not have rotating part, thereby noiseless, the life-span is long, working stability is reliable, light, and can utilize the various energy, comprise solid, liquid, gas attitude fuel, solar energy, nuclear energy, and the used heat of various device, waste heat etc., thereby be specially adapted to the small-power generating and the interplanetary flight in military affairs, exploration and outlying district etc.The semiconductor temperature differential generating shortcoming is to need stable heat source temperature and temperature gap equally.
Sodium-sulphur battery is made up of fused solution electrode and solid electrolyte.The active material that constitutes negative pole is a motlten metal sodium, and constituting anodal active material is sulphur and sodium polysulfide fused salt.Ceramic material β " Al
2O
3As the solid electrolyte barrier film of holding concurrently.Shell is then generally used stainless steel and other metal materials.Sodium-sulphur battery has many characteristic parts: the specific energy height, its theoretical specific energy is 760WhKg
-1, reality is greater than 100WhKg
-1, be lead-acid battery 3-4 doubly; Electric current, high power discharge greatly.Its discharge current density generally can reach 200-300mAcm
-2And instantaneous time can be emitted its self-energy of 3 times; The efficiency for charge-discharge height.Owing to adopt solid electrolyte, so do not adopt the sort of self discharge and the side reaction of liquid electrolytic electrolitc secondary cell usually, charging and discharging currents efficient almost 100%.
Begin at the end of the eighties and the beginning of the nineties, giving priority to sodium-sulphur battery abroad uses as (as the power station energy storage) under the stationary applica-tions, and more and more show its superiority, develop sodium-sulphur battery cooperatively as energy-storage battery as Tokyo Electric Power (TEPCO) and NGK company, its application target aiming power station load leveling (promptly plays the effect of peak clipping Pinggu, the electricity that night is unnecessary is stored in the battery, from battery, discharge again during peak of power consumption to daytime), the UPS emergency power supply and moment offset supply etc., and the implementation phase beginning to enter commercialization in 2002, built up the energy storage sodium-sulphur battery device of maximum-norm (8MW) in the world, by in October, 2005 statistics, produce the sodium-sulphur battery amount of batteries per year and surpassed 100MW, begin simultaneously to overseas output.But sodium-sulphur battery also has weak point, needs during sodium-sulphur battery work temperature to guarantee that its working temperature is at 580-630K.Need stable thermal source to guarantee working temperature like this for it.
(3) summary of the invention
The object of the present invention is to provide a kind of deficiency that can remedy the single energy conversion equipment, reach the integrated energy conversion and utilization system of the reasonable use of electric energy.
The object of the present invention is achieved like this:
Comprise solar photovoltaic generation system and solar heat power generation system, solar photovoltaic generation system directly connects electric-control system, after the heat transfer medium of solar heat power generation system obtains higher energy, enter into high-temperature heat accumulation system and alkali metal thermo-electric direct converter integrated system respectively, enter into condenser through first semiconductor temperature difference power generating system and second semiconductor temperature difference power generating system respectively again, under the effect of second pump, get back to the solar generator system again, form a complete outer circulation, the alkali metal thermo-electric direct converter integrated system, first semiconductor temperature difference power generating system is connected electric-control system respectively with second semiconductor temperature difference power generating system, at sunny energy heat generating system, the pipeline that advances second semiconductor temperature difference power generating system is provided with valve.
The present invention can also comprise:
1, it also comprises storage battery, and storage battery is connected between electric-control system and the output system.
2, it also comprises the Na-S battery system, and the Na-S battery system is positioned at after the valve on the sunny pipeline that can heat generating system.
In order to improve the shortcoming separately of solar energy utilization rate and solution said apparatus, the present invention proposes a kind of integration type power conversion and utilize system.System of the present invention meanwhile utilizes solar heat power generation system to utilize heat transfer medium to store in the high-temperature heat accumulation system solar energy by the solar photovoltaic generation system direct generation of electricity.And, promptly utilize alkali metal thermo-electric direct converter (AMTEC) integrated system and semiconductor temperature difference power generating system to generate electricity by the cascaded utilization of energy mode.Finally by the flow direction of electric-control system, to reach the reasonable use of electric energy according to actual conditions distribution electric energy.
(4) description of drawings
Fig. 1 is the schematic diagram of first kind of execution mode of the present invention;
Fig. 2 is the schematic diagram of first kind of execution mode of the present invention.
(5) embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1, wherein: 1 expression solar photovoltaic generation system to electric-control system export electric energy, 2 expression AMTEC are integrated represents that to electric-control system output electric energy, A high-temperature heat accumulation system, B represent that AMETC integrated system, C represent that semiconductor temperature difference power generating system 1, D represent that semiconductor temperature difference power generating system 2, P1 and P2 represent pump to electric-control system output electric energy, 4 expression semiconductor temperature difference power generating systems 2 to electric-control system output electric energy, 3 expression semiconductor temperature difference power generating systems 1.
System of the present invention has solar photovoltaic generation system and solar heat power generation system simultaneously.
But solar photovoltaic generation system is the direct generation of electricity after receiving solar energy.The electric energy of its generation is delivered directly to electric-control system.Electric-control system is all exported electric energy in peak of power consumption again according to actual need for electricity period, when low power consumption with the part power storage in storage battery, use when treating the electricity consumption peak.
In solar photovoltaic generation system work simultaneously, solar heat power generation system is also in running.This system becomes heat energy by heat transfer medium with solar energy converting.
Heat transfer medium enters into high-temperature heat accumulation system and AMTEC integrated system respectively after solar heat power generation system obtains higher energy, enter into condenser through semiconductor temperature difference power generating system 1 and semiconductor temperature difference power generating system 2 respectively again.Under the effect of pump P2, get back to the solar generator system again, form a complete outer circulation.
This heat transfer medium can adopt oil or fused salt.
The high-temperature heat accumulation system mainly acts on to be storing heat and to provide heat for power conversion.Its concrete effect is: 1) when solar energy is sufficient, and storing heat; 2) when solar energy is not enough, energy is discharged,,, then also guarantee for the Na-S battery system provides temperature if any the Na-S battery system for AMTEC integrated system power conversion provides energy source.The mode of high-temperature heat accumulation system storing heat can be the phase deformation type of fused salt.Can be by selecting suitable fused salt, to improve the efficient of energy storage.
It is that thermal power transfer with obtaining is an electric energy that the AMTEC integrated system mainly acts on.Its heat energy according to circumstances derives from two parts.1) when solar energy was sufficient, its origin of heat was in solar heat power generation system.2) when arriving night, the solar heat electric system quits work.Cut off high-temperature heat accumulation system and AMTEC integrated system and extraneous getting in touch by control valve 1 and valve 2.Make high-temperature heat accumulation system and AMTEC integrated system self form circulation a-b-c in.And provide power for heat transfer medium circulation with pump P1.Make the AMTEC integrated system obtain heat energy to reach the Conversion of energy purpose from the high-temperature heat accumulation system.
For improving energy utilization ratio, system of the present invention uses the cascaded utilization of energy mode.Two semiconductor temperature difference power generating systems have been added for this reason.Semiconductor temperature difference power generating system 1 is positioned at the downstream of valve 2, and it mainly utilizes the waste heat through the heat transfer medium of high-temperature heat accumulation system and AMTEC integrated system to generate electricity.Semiconductor temperature difference power generating system 2 is positioned at the downstream of AMTEC integrated system, and it mainly utilizes the waste heat through the heat transfer medium of AMTEC integrated system to generate electricity.Improved the service efficiency of energy like this.
The effect of condenser is to reduce the heat transfer medium temperature, to improve its heat transfer efficiency.
The electric energy that AMTEC integrated system and semiconductor electricity generation system are sent is directly inputted to electric-control system.This system during then according to actual conditions electricity peak with electric energy directly by output system output, when low ebb with power storage in storage battery.
The storage battery of system of the present invention can use lead-acid batteries.As using the Na-S battery system for improving the electric power storage ability.Then its working temperature can be guaranteed by high-temperature heat accumulation system (perhaps AMTEC).
Fig. 2 is exactly the schematic diagram that has the Na-S battery system.Its operation principle and a last scheme are identical, and unique difference is system of the present invention electrical storage device difference.The Na-S battery system is positioned at valve 1 downstream, and when the solar generator system works, its working temperature is mainly given security by the heat transfer medium that comes from the solar heat electric system.When the solar heat electric system is not worked,,, make the high-temperature heat accumulation system provide temperature guarantee (perhaps AMTEC) altogether for the Na-S battery system by control valve for guaranteeing Na-S battery system working temperature.Heat-transfer working medium is a power source with pump P1 like this, at the high-temperature heat accumulation device, forms complete cycle in AMTEC integrated system, Na-S battery system and the semiconductor temperature difference power generating system 1.In this circulation, energy has carried out cascade utilization again again.
Output system in the system of the present invention has AC/DC changeover switch, load protection, electric current and voltage amplification.
Claims (3)
1, a kind of integrated energy conversion and utilization system, comprise solar photovoltaic generation system and solar heat power generation system, it is characterized in that: solar photovoltaic generation system directly connects electric-control system, after the heat transfer medium of solar heat power generation system obtains higher energy, enter into high-temperature heat accumulation system and alkali metal thermo-electric direct converter integrated system respectively, enter into condenser through first semiconductor temperature difference power generating system and second semiconductor temperature difference power generating system respectively again, under the effect of second pump, get back to the solar generator system again, form a complete outer circulation, the alkali metal thermo-electric direct converter integrated system, first semiconductor temperature difference power generating system is connected electric-control system respectively with second semiconductor temperature difference power generating system, at sunny energy heat generating system, the pipeline that advances second semiconductor temperature difference power generating system is provided with valve.
2, integrated energy conversion and utilization system according to claim 1 it is characterized in that: further comprising storage battery, and storage battery is connected between electric-control system and the output system.
3, integrated energy conversion and utilization system according to claim 1 it is characterized in that: further comprising the Na-S battery system, and the Na-S battery system is positioned at after the valve on the sunny pipeline that can heat generating system.
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| CN200910072833A CN101645670A (en) | 2009-09-09 | 2009-09-09 | Integrated energy conversion and utilization system |
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| CN200910072833A CN101645670A (en) | 2009-09-09 | 2009-09-09 | Integrated energy conversion and utilization system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814870A (en) * | 2010-04-27 | 2010-08-25 | 华南理工大学 | Solar trench type temperature-difference generating device |
| CN103398474A (en) * | 2013-07-26 | 2013-11-20 | 安徽工业大学 | Solar photovoltaic-photothermal-thermoelectric comprehensive utilization system |
| CN104953928A (en) * | 2015-07-09 | 2015-09-30 | 金华倍特泵业有限公司 | Off-grid well pump system capable of sufficiently utilizing solar energy |
| CN105429509A (en) * | 2014-09-14 | 2016-03-23 | 章世斌 | Solar heat accumulating type thermoelectric power generation system |
| CN106100518A (en) * | 2016-06-14 | 2016-11-09 | 中国工程物理研究院材料研究所 | Passive slight fever photoelectricity, slight fever electricity and slight fever combined power system and implementation method |
| CN106208914A (en) * | 2016-09-08 | 2016-12-07 | 安徽新富地能源科技有限公司 | A kind of ground temperature energy device being combined with photovoltaic |
| CN109742975A (en) * | 2018-12-23 | 2019-05-10 | 山西大学 | A kind of solar energy thermo-electric generation system |
| CN113691218A (en) * | 2021-07-24 | 2021-11-23 | 华北电力大学（保定） | Photovoltaic temperature difference power generation combined energy storage system with chemical upgrading and heat storage functions |
| CN114583207A (en) * | 2022-03-23 | 2022-06-03 | 西安交通大学 | Three-stage circulation power generation system based on solid oxide fuel cell |
-
2009
- 2009-09-09 CN CN200910072833A patent/CN101645670A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814870A (en) * | 2010-04-27 | 2010-08-25 | 华南理工大学 | Solar trench type temperature-difference generating device |
| CN103398474A (en) * | 2013-07-26 | 2013-11-20 | 安徽工业大学 | Solar photovoltaic-photothermal-thermoelectric comprehensive utilization system |
| CN105429509A (en) * | 2014-09-14 | 2016-03-23 | 章世斌 | Solar heat accumulating type thermoelectric power generation system |
| CN105429509B (en) * | 2014-09-14 | 2018-06-26 | 章世斌 | Solar heat-preservation formula thermo-electric generation system |
| CN104953928A (en) * | 2015-07-09 | 2015-09-30 | 金华倍特泵业有限公司 | Off-grid well pump system capable of sufficiently utilizing solar energy |
| CN106100518A (en) * | 2016-06-14 | 2016-11-09 | 中国工程物理研究院材料研究所 | Passive slight fever photoelectricity, slight fever electricity and slight fever combined power system and implementation method |
| CN106208914A (en) * | 2016-09-08 | 2016-12-07 | 安徽新富地能源科技有限公司 | A kind of ground temperature energy device being combined with photovoltaic |
| CN109742975A (en) * | 2018-12-23 | 2019-05-10 | 山西大学 | A kind of solar energy thermo-electric generation system |
| CN113691218A (en) * | 2021-07-24 | 2021-11-23 | 华北电力大学（保定） | Photovoltaic temperature difference power generation combined energy storage system with chemical upgrading and heat storage functions |
| CN114583207A (en) * | 2022-03-23 | 2022-06-03 | 西安交通大学 | Three-stage circulation power generation system based on solid oxide fuel cell |
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Open date: 20100210 |