CN104165067A - Cold recovery method for vaporization heat absorption-compression heat release coupling - Google Patents
Cold recovery method for vaporization heat absorption-compression heat release coupling Download PDFInfo
- Publication number
- CN104165067A CN104165067A CN201410359443.XA CN201410359443A CN104165067A CN 104165067 A CN104165067 A CN 104165067A CN 201410359443 A CN201410359443 A CN 201410359443A CN 104165067 A CN104165067 A CN 104165067A
- Authority
- CN
- China
- Prior art keywords
- cold
- liquefied air
- air
- energy storage
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a method for achieving liquefied air cold recovery, belongs to the field of compressed air energy storage and utilization and mainly aims at providing a cold recovery method for vaporization heat absorption-compression heat release coupling and an achievement mode thereof for a liquefied air energy storage system. By means of the method, the cold utilization rate of liquefied air is improved, the heat-to-power conversion efficiency of the liquefied air can be remarkably improved, and the overall efficiency of the energy storage system is improved. A large amount of 'cold' is produced in the vaporization heat absorption process, and the cold serves as an important constituent part for liquefied air energy storage. The method is directly utilized in a mode that compressed air is directly in contact with the liquefied air, and an injection type structure is introduced on the basis of traditional thermodynamic cycle to form air-liquid two-phase heat exchange so as to improve the cold recycling rate.
Description
Technical field:
The invention belongs to compressed air energy storage and utilize field, relating to the hot merit converting system of liquefied air energy-storage system.
Background technique:
The environmental pollution problem that the burning of fossil fuel brings is day by day serious.Show as PM2.5 index and exceed standard on a large scale, annual haze number of days rises year by year, and CO2 emission constantly increases, and everything is inseparable with the burning of fossil fuel.
Therefore,, when combustion of fossil fuel technical research is constantly carried out, the exploration of new energy technology is also significantly advancing.The new energy such as current various countries develop actively wind energy, nuclear energy, solar energy.Accounting in the use of China's new energy in total energy only 7%, estimates will reach 15% at the year two thousand twenty
Renewable energy sources is as the important component part of new energy, be technical and cost on the most competitive new energy form, as wind energy and solar energy.At present the accounting of the use of renewable energy sources in total energy only 1.5%, estimates will reach 6% at the year two thousand twenty.2011, world's wind-powered electricity generation and photovoltaic generation total installation of generating capacity reached respectively 2.38 hundred million kilowatts and 0.69 hundred million kilowatt.But the renewable energy sourcess such as wind energy and solar energy have intermittent and instable feature, although electric motor power is huge, can not access on a large scale at present power grid application.
The large scale storage technology of renewable energy sources can address the above problem, so far, only have in the world the country such as U.S., moral to complete the foundation in a small amount of compressed-air energy storage power station, its reason is that compressed-air energy-storage system needs huge Natural Caves store compressed air.Therefore, not extensive use of compressed air energy storage technology.
Liquefied air energy storage can reduce 97% by energy storage space requirement, compares the energy storage of conventional compression air with the high advantage of its energy storage density, is applicable to the large scale storage of renewable energy sources, has broad application prospects.
Liquefied air energy storage principle: when power requirement is less than electrical network supply, unnecessary electric energy drive motor drives gas liquefaction system, and air enters liquefied air system, through overcompression and the cooling low-temperature liquefaction air that becomes, stores electric energy with the form of liquefied air; When power requirement is greater than electrical network supply, adopt cryopump by after the liquefied air supercharging of low-temperature liquid storage tank, with the air heat-exchange of normal temperature, gasification after liquefied air heat absorption, pressure raises and the promotion turbine generation that expands, and realizes the hot merit conversion of liquefied air.
In liquefied air gasification endothermic process, can produce a large amount of " cold ", and cold is the important component part of liquefied air stored energy, the recycling of cold is the key issue in liquefied air energy storage technology.
Isothermal expansion is that gas expansion for doing work reaches maximum methods in theory, its condition is in inflation process, to absorb enough heats to keep gas temperature constant, for the conversion of liquid nitrogen (liquefied air) hot merit, thermal source is taken from normal temperature atmosphere, realize isothermal expansion and must strengthen heat exchange.Knowlen in 1997 propose the piston increase heat exchange area of cone structure, to approach isothermal expansion, but do not carry out experimental verification.Wen in 2006 propose a small amount of liquid nitrogen directly to inject the method reinforcement heat exchange in pond, and its advantage is because the large temperature of specific heat of water remains unchanged substantially, avoided adopting the bulky air heat exchanger of tradition, and the coefficient of heat transfer are high, is easy to realize isothermal expansion.Within 2010, Clarke adopts the method for experimental observation to study the structure of flow phenomenon and the jet of injection process.
Adopt liquid nitrogen (liquefied air) directly to inject the method for normal-temperature water, although can strengthen heat exchange, but a large amount of colds are stored in water, be generally used for compressing link in liquid nitrogen (liquefied air) preparation process, but recovery structure complexity, loss of refrigeration capacity is large, and cold recovery difficulty is large, as Fig. 2.
Summary of the invention
Object of the present invention:
A kind of liquefied air energy-storage system cold efficient recycling method is provided.
Advantage of the present invention: gaseous air is filled with liquefied air and produces micro gas-bubble increase heat exchange area, has avoided the use of large heat exchanger, has reduced the loss of cold, has improved heat transfer rate.
Brief description of the drawings
Fig. 1 is the cold recovery schematic diagram of gasification heat absorption-compression heat release coupling.
1. work tank, 2. compressor, 3. ascending pipe
Fig. 2 is traditional cold recovery schematic diagram.
4. liquefied air storage tank, 5. compressor, 6. work tank, 7. heat exchanging tube
The gasify cold recovery embodiment of heat absorption-compression heat release coupling of Fig. 3.
8. two-position valve, 9. work tank, 10. fan, 11. heat exchanging tubes, 12. piston cylinders, 13. heat exchange tanks, 14. heat exchangers, 15. two-position valves, 16. ascending pipes, 17. pipelines, 18. pipelines
Technological scheme of the present invention:
Formed by work tank (1), compressor (2) and ascending pipe (3), work tank is equipped with liquefied air and gaseous air in (1), ascending pipe (3) one end is connected with work tank (1), interface is below liquid level, the other end is connected with the relief opening of compressor (2), the compressed work tank (1) that simultaneously injects of gas, liquefied air absorbs heat the gasification that compression produces.
Ascending pipe: inserting work tank (2) end is the porous structure of the multiple geometrical shapies such as circular, square, polygonal.
Compressor: can be volume type and velocity profile.
Embodiment:
Whole system is by work tank (9), heat exchange tank (13) and piston cylinder (11) composition, the pipeline (18) being connected with heat exchange tank (12) is divided into two branch roads, after one tunnel series connection two-position valve (8), be connected with work tank (9), another road connects two-position valve (15), the ascending pipe (16) being connected with two-position valve (8) inserts the middle liquid level of work tank (9) once, more than the pipeline (17) being connected with two-position valve (8) inserts the middle liquid level of work tank (9), the heat exchanging tube (11) of connecting between heat exchange tank (13) and piston cylinder (12), the outer fan (10) of placing of heat exchanging tube (12), heat exchange tank (13) built-in heat exchanger (14), complete gasification-compression process, inflation process and exhaust process.
Gasification-compression process: two-position valve (8) is in the next, two-position valve (15) is in off state, piston cylinder (12) is in rise, gas in heat exchange tank (13) is compressed, enter the bottom of work tank (9) by connecting pipeline, pressurized gas and liquefied air direct contact heat transfer, the liquefied air gasification of being heated, the upper cavity volume pressure rise of work tank (9), realizes the recovery of cold.
Inflation process: two-position valve (8) is in upper, two-position valve (15) is in off state, piston cylinder (12) is in backhaul, the air that gasification produces and pressurized gas mix, and enter heat exchange tank (13) by pipeline, and mixed gas is by heat exchanger (14), carry out abundant heat exchange with the heat exchanging fluid in heat exchange tank (13), temperature rise, gas expansion, the piston that promotes piston cylinder (12) externally does work.
Exhaust process: two-position valve (8) is in the next, two-position valve (15) is in connected state, piston cylinder (12) is in rise, heat exchange tank (13) liquid level rises, gas is discharged by two-position valve (15), gas pressure remains unchanged, and approaches barometric pressure.
Fan: in piston movement process, fan (10) remains starting state, pipeline (11) is heated, make heat exchanging fluid temperature stabilization in room temperature, for the heat transfer process in heat exchange tank (13) provides stable origin of heat.
Claims (3)
1. the cooling capacity recovering method of heat absorption-compression heat release coupling that gasifies, it is characterized in that: formed by work tank (1), compressor (2) and ascending pipe (3), work tank is equipped with liquefied air and gaseous air in (1), ascending pipe (3) one end is connected with work tank (1), interface is below liquid level, the other end is connected with the relief opening of compressor (2), the compressed work tank (1) that simultaneously injects of gas, liquefied air absorbs heat the gasification that compression produces.
2. ascending pipe claimed in claim 1, is characterized in that: inserting work tank (2) end is the porous structure of the multiple geometrical shapies such as circular, square, polygonal.
3. compressor claimed in claim 1, is characterized in that: can be volume type and velocity profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359443.XA CN104165067A (en) | 2014-07-25 | 2014-07-25 | Cold recovery method for vaporization heat absorption-compression heat release coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359443.XA CN104165067A (en) | 2014-07-25 | 2014-07-25 | Cold recovery method for vaporization heat absorption-compression heat release coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104165067A true CN104165067A (en) | 2014-11-26 |
Family
ID=51909032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410359443.XA Pending CN104165067A (en) | 2014-07-25 | 2014-07-25 | Cold recovery method for vaporization heat absorption-compression heat release coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104165067A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156891A (en) * | 2015-08-27 | 2015-12-16 | 中国石油天然气股份有限公司 | Cogeneration system based on gas storage bin |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587694A (en) * | 2004-09-10 | 2005-03-02 | 朱辉 | Green environmental protection engine |
| FR2911637A3 (en) * | 2007-01-19 | 2008-07-25 | Daniel Alberic Ernest Even | Aerostat and light apparatus propelling device, has gasification chamber supplied by injector and heated by microwaves, where compressor pulsates compressed air in high pressure chamber, and photovoltaic cell provides energy |
| US20090282822A1 (en) * | 2008-04-09 | 2009-11-19 | Mcbride Troy O | Systems and Methods for Energy Storage and Recovery Using Compressed Gas |
| CN102758690A (en) * | 2012-07-29 | 2012-10-31 | 中国科学院工程热物理研究所 | Efficient high-pressure liquid air energy storage/release system |
| CN103370495A (en) * | 2011-01-20 | 2013-10-23 | 光帆能源公司 | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
| CN103527274A (en) * | 2013-10-23 | 2014-01-22 | 肖波 | Cold energy liquid air (liquid nitrogen) engine system |
| CN103806968A (en) * | 2014-03-10 | 2014-05-21 | 苟仲武 | Liquid air power generating device and working method |
-
2014
- 2014-07-25 CN CN201410359443.XA patent/CN104165067A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587694A (en) * | 2004-09-10 | 2005-03-02 | 朱辉 | Green environmental protection engine |
| FR2911637A3 (en) * | 2007-01-19 | 2008-07-25 | Daniel Alberic Ernest Even | Aerostat and light apparatus propelling device, has gasification chamber supplied by injector and heated by microwaves, where compressor pulsates compressed air in high pressure chamber, and photovoltaic cell provides energy |
| US20090282822A1 (en) * | 2008-04-09 | 2009-11-19 | Mcbride Troy O | Systems and Methods for Energy Storage and Recovery Using Compressed Gas |
| CN103370495A (en) * | 2011-01-20 | 2013-10-23 | 光帆能源公司 | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
| CN102758690A (en) * | 2012-07-29 | 2012-10-31 | 中国科学院工程热物理研究所 | Efficient high-pressure liquid air energy storage/release system |
| CN103527274A (en) * | 2013-10-23 | 2014-01-22 | 肖波 | Cold energy liquid air (liquid nitrogen) engine system |
| CN103806968A (en) * | 2014-03-10 | 2014-05-21 | 苟仲武 | Liquid air power generating device and working method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156891A (en) * | 2015-08-27 | 2015-12-16 | 中国石油天然气股份有限公司 | Cogeneration system based on gas storage bin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110206599B (en) | Combined cooling, heating and power system | |
| CN109026241B (en) | Heat pump compressed air energy storage system | |
| CN102758748B (en) | High-pressure liquid air energy storage/release system | |
| CN202970911U (en) | Novel-process supercritical air energy storage system | |
| CN102758690B (en) | Efficient high-pressure liquid air energy storage/release system | |
| CN102758689B (en) | Ultra-supercritical air energy storage/release system | |
| CN103016152B (en) | Supercritical air energy storage system with novel process | |
| CN106224041B (en) | A kind of electric heating energy-storage system | |
| CN207064027U (en) | The air compressed energy-storage and generating integrated system of wind light mutual complementing | |
| CN202811078U (en) | Ultra-supercritical air energy storage/release system | |
| CN103291557A (en) | Wind-light-storage island-type combined cooling, heating and power system based on solar light-heat utilization | |
| CN105370407B (en) | Low temperature liquid air energy storage systems | |
| CN105736056B (en) | Liquid air energy storage system | |
| CN105545486A (en) | Power generating system and method of gas turbine | |
| CN110259625A (en) | A kind of draw water compressed air energy-storage system and method using underground reservoir | |
| CN208473942U (en) | A kind of cogeneration cooling heating system of compressed-air energy storage coupling photo-thermal power generation | |
| CN202811238U (en) | High-pressure liquid-state air energy storage/release system | |
| CN102392793B (en) | Energy storing and releasing wind-driven generation system with air as medium | |
| CN210441302U (en) | Combined cooling, heating and power system | |
| CN202811079U (en) | High-efficiency and high-pressure liquid air energy storage/ release system | |
| CN104500264B (en) | A kind of open-close formula Stirling heat to power output mechanism | |
| CN207299595U (en) | A kind of sun set thermal field and compressed gas energy storage combined operation system | |
| CN106677988B (en) | Wind-solar energy storage system | |
| CN102913394B (en) | Wind power-generating low-temperature energy accumulation system and energy accumulation and power supply method | |
| CN104165067A (en) | Cold recovery method for vaporization heat absorption-compression heat release coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141126 |