CN103321861B - A kind of disc type solar energy cogeneration system based on single-screw expander and fused salt - Google Patents
A kind of disc type solar energy cogeneration system based on single-screw expander and fused salt Download PDFInfo
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- CN103321861B CN103321861B CN201310279662.2A CN201310279662A CN103321861B CN 103321861 B CN103321861 B CN 103321861B CN 201310279662 A CN201310279662 A CN 201310279662A CN 103321861 B CN103321861 B CN 103321861B
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02E10/44—Heat exchange systems
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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
Based on a disc type solar energy cogeneration system for single-screw expander and fused salt, belong to solar energy heat utilization field.Solar radiation focuses to heating coil (1) through dish-style condenser (10) and heats the fused salt flow through, and the fused salt part after heating is stored in salt cellar (2), and another part enters molten salt heater (3) Heating Cyclic working medium.Become steam after cycle fluid is heated, enter single-screw expander (4) expansion work, drive motor (5) generating.Exhaust steam after expansion enters after regenerator (6) preheating enters the front cycle fluid of molten salt heater (3), and enter hot water heat exchanger (7) and be condensed into liquid state, liquid refrigerant is entered by working medium circulating pump (8) pressurization and circulates next time.And the hot water after heating enters resident family by pipeline.Type structure of the present invention is simple, easy to process, equipment mature and reliable; Generation load and heating demand adjust as required, by night and overcast and rainy without solar radiation and the low impact of radiation.
Description
Technical field
The present invention relates to a kind of novel disc type solar energy cogeneration system, belong to solar energy heat utilization field.
Background technique
At present, China still has 7,656 ten thousand without electric population, 16 Ge Wu electricity counties, 828 Ge Wu electricity townshiies and 29783 Ge Wu electricity villages.Due to these county towns, villages and small towns and live scattered and herd family and be located in outlying, away from electrical network, the little and dispersion of power load.Particularly the life of the most of peasants and herdsmen in Tibet is with highly relying on biomass energy, and the biomass utilization amounts such as fuel wood, turf, udershrub, animal manure and stalk account for 50% of whole demand for energy.Many areas are still to burn bavin, and cause biomass utilization amount to exceed Appropriate application amount, ccd area progressively expands, and grassland area constantly reduces, and some areas forest Caiyu is lacked of proper care, and disaster is frequent, Which Ecological Environment Faced serious threat.
Solar energy has the general advantage of resource distribution, is especially just in time in repository for western China, adopts distributed solar energy CCHP technology to be the most real selection.Solar energy thermal-power-generating is owing to can adopt the large-scale heat storage technology of low cost, and therefore compared with solar energy power generating, solar energy thermal-power-generating solves solar energy resources and the unmatched contradiction of demand by accumulation of heat, is more suitable for the demand of distributed energy.
Generator unit is one of key technology of solar chp system.External solar heat power generation system generally adopts conventional vapor turbine as generator unit, but steam turbine unit is difficult to do little, and for China, the generated output of minimum steam turbine is 800kW, cannot adapt to the demand of China's distributed solar energy generating.Single-screw expander technology is a kind of technology that can utilize the heat engine of cogeneration, and its principle is steam ingress engine internal spline, and lead-screw rotates.Along with bolt rotary, the volume between teeth groove increases gradually, and medium step-down cooling expansion work, finally discharges from teeth groove end.Power exports from headscrew, drives electrical power generators.The power of single-screw expander between 3kW ~ 2000kW, just in time can compensate for steam turbine single-machine capacity and is difficult to do little defect.The steam of steam turbine can only be superheated vapor or saturated vapour, and single-screw expander can be superheated vapor, saturated vapour, vehicle repair major fluid or hydrothermal solution.In addition, single-screw expander can by adopting the working medium of different boiling, and its serviceability temperature scope can from 70 DEG C to 250 DEG C, and therefore single-screw expander is low-temperature electricity-generating equipment in one, is particularly suitable for above-mentioned distributed solar energy chp system and is suitable for.Compared with traditional steam turbine, single-screw expander has the following advantages: 1, structure is simple, and moving element is few; 2, stress balance, for ease of maintenaince; 3, smooth running, noise is low; 4, the efficiency under sub load is high; 5, reliability is high, and maintenance cost is low; 6, saturated vapour or superheated vapor state is applicable to, and not high to the quality requirements of feedwater.
Summary of the invention
The object of the invention is to design and be a set ofly applicable to efficient, the environmental protection of distributed heat CCHP, reliable and stable solar chp system, overcome lubrication and integrity problem that original Stirling engine brings, and solve solar energy resources and the unmatched contradiction of demand by fused salt accumulation of heat.The feature of this system is: 1, adopt fused salt as heat transfer accumulation of heat working medium, the heat transmission assemble dish-style condenser and storage, have the advantages that running temperature is wide, operating pressure is low; 2, adopt single-screw expander, efficiency is high, structure is simple, noise is low, the life-span is long, working medium strong adaptability, is applicable to the distributed solar power generation system of middle low temperature.
A kind of disc type solar energy cogeneration system based on single-screw expander and fused salt, comprise heating coil 1, storage salt cellar 2, molten salt heater 3, single-screw expander 4, generator 5, regenerator 6 and hot water exchanger 7, working medium circulating pump 8, pump for liquid salts 9 and dish-style condenser 10: solar radiation focuses to through dish-style condenser 10 fused salt that in heating coil 1, heating is flow through, it is interior for night and overcast and rainy generating and heat supply that a fused salt part after heating is stored in the storage salt cellar 2 be connected with heating coil 1, another part enters the molten salt heater 3 Heating Cyclic working medium be connected with heating coil 1, the outlet of molten salt heater 3 is connected with single-screw expander 4, becomes steam after cycle fluid is heated, and enters single-screw expander 4 expansion work, and single-screw expander 4 is connected to motor 5 and drives motor 5 to generate electricity, exhaust steam after expanding in single-screw expander 4 enters after regenerator 6 preheating enters the cycle fluid before molten salt heater 3 along pipeline, enter hot water heat exchanger 7 and be condensed into liquid state, liquid circulation working medium enters lava heater 3 by working medium circulating pump 8 pressurization and starts to circulate next time.Hot water in hot water heat exchanger 7 after heating enters resident family by pipeline, provides needed for the life such as heating, domestic hot-water to it.
Described dish-style condenser 10 is installed with journey for one or more parallel connection.
Described cycle fluid adopts organic working medium or water.
In the solar chp system of the present invention's design, fused salt absorbs as the heat transfer accumulation of heat working medium of high temperature the heat that disc type solar energy condenser collects, and operating temperature is at 200 ~ 500 DEG C, and thermal capacity is large, storage density can reach 1000MJ/m
3; Single-screw expander is as power engine, and structure is simple, reliable operation, wide adaptability, and cycle fluid can adopt organic working medium, also can adopt water.This system total efficiency is according to accumulation of heat scale, heating form and heat supply temperature, and efficiency of utilization can reach 80% ~ 90%, has the cost performance that volume is little, efficiency is high, the life-span is long and good.
In the solar chp system of the present invention's design, single screw-rod engine 4 can be single stage format or multi-level form according to the Demand Design of actual power and operating pressure, and multilevel system can be designed to the structure such as series, parallel or series-parallel connection.Single-screw expander selects nonmetal-metal screw star wheel rotor secondary, and vibrate little, the life-span is long.
The invention has the beneficial effects as follows: structure of the present invention is simple, easy to process, equipment mature and reliable; Generation load and heating demand can adjust as required, by night and overcast and rainy without solar radiation and the low impact of radiation; Adopt cogeneration, while improving the raw rear quality of people, also improve solar thermal utilization rate.
Accompanying drawing explanation
Accompanying drawing 1, single-screw machine star wheel rotor structural representation;
Accompanying drawing 2, singe screw air expander structure diagram;
Accompanying drawing 3, based on the schematic diagram of the disc type solar energy cogeneration system of single-screw expander and fused salt.
Accompanying drawing 4, the schematic diagram of the cogeneration system that multiple stage disc type solar energy heating coil composes in parallel.
In figure: 1, heating coil, 2, storage salt cellar, 3, molten salt heater, 4, single-screw expander, 5, generator, 6, regenerator, 7, hot water exchanger, 8, working medium circulating pump, 9, pump for liquid salts, 10 dish-style condensers.
Embodiment
Embodiment 1: the design of main points described in illustrating according to accompanying drawing, processing and install the disc type solar energy cogenerator of composition one group based on single-screw expander and fused salt, and it designs generating capacity 5kW, heat storage capacity 2.16 × 10
8j.This device forms by with lower component: heating coil 1, storage salt cellar 2, molten salt heater 3, single-screw expander 4, generator 5, regenerator 6 and hot water exchanger 7, working medium circulating pump 8, pump for liquid salts 9 and dish-style condenser 10.Fluid in heating coil is fused salt; Heat storage material is fused salt; Dish-style condenser adopts double-axis tracking, and the solar light focusing collected is heated fused salt working medium at heating coil.A fused salt part after heating enters the accumulation of heat of storage salt cellar, and another part enters the generating of molten salt heater Heating Cyclic working medium for single-screw expander.Exhaust steam after generating heat hot water in hot water heat exchanger, provides heating, domestic hot-water.This device adopts 2 focusing ratio 24, heat-collecting area 65m
2dish-style condenser.The generated output of this system is designed to 5kW, and the generated output at night can reach 3kW, can generate electricity and provide hot water for 24 hours.
Embodiment 2: the design of main points described in illustrating according to accompanying drawing, processing and install the disc type solar energy cogenerator of composition one group based on single-screw expander and fused salt, and it designs generating capacity 10kW, heat storage capacity 4.32 × 10
8j.This device forms by with lower component: heating coil 1, storage salt cellar 2, molten salt heater 3, single-screw expander 4, generator 5, regenerator 6 and hot water exchanger 7, working medium circulating pump 8, pump for liquid salts 9 and dish-style condenser 10.Fluid in heating coil is fused salt; Heat storage material is fused salt; Dish-style condenser adopts double-axis tracking, and the solar light focusing collected is heated fused salt working medium at heating coil.A fused salt part after heating enters the accumulation of heat of storage salt cellar, and another part enters the generating of molten salt heater Heating Cyclic working medium for single-screw expander.Exhaust steam after generating heat hot water in hot water heat exchanger, provides heating, domestic hot-water.This device adopts 3 focusing ratio 24, heat-collecting area 86m
2dish-style condenser.The generated output of this system is designed to 10kW, and night, generated output was 6kW, can generate electricity and provide hot water for 24 hours.
Embodiment 3: the design of main points described in illustrating according to accompanying drawing, processing and install the disc type solar energy cogenerator of composition one group based on single-screw expander and fused salt, and it designs generating capacity 30kW, heat storage capacity 1.296 × 10
9j.This device forms by with lower component: heating coil 1, storage salt cellar 2, molten salt heater 3, single-screw expander 4, generator 5, regenerator 6 and hot water exchanger 7, working medium circulating pump 8, pump for liquid salts 9 and dish-style condenser 10.Fluid in heating coil is fused salt; Heat storage material is fused salt; Dish-style condenser adopts double-axis tracking, and the solar light focusing collected is heated fused salt working medium at heating coil.A fused salt part after heating enters the accumulation of heat of storage salt cellar, and another part enters the generating of molten salt heater Heating Cyclic working medium for single-screw expander.Exhaust steam after generating heat hot water in hot water heat exchanger, provides heating, domestic hot-water.This device adopts 10 focusing ratio 24, heat-collecting area 90m
2dish-style condenser.The generated output of this system is designed to 30kW, and night, generated output can reach 20kW, can generate electricity and provide hot water for 24 hours.
Claims (2)
1. the disc type solar energy cogeneration system based on single-screw expander and fused salt, it is characterized in that: it comprises heating coil (1), storage salt cellar (2), molten salt heater (3), single-screw expander (4), generator (5), regenerator (6) and hot water exchanger (7), working medium circulating pump (8), pump for liquid salts (9) and dish-style condenser (10), it is characterized in that: solar radiation focuses to through dish-style condenser (10) fused salt that in heating coil (1), heating is flow through, a fused salt part after heating is stored in the storage salt cellar (2) that is connected with heating coil (1) for night and overcast and rainy generating and heat supply, another part enters molten salt heater (3) the Heating Cyclic working medium be connected with heating coil (1), the outlet of molten salt heater (3) is connected with single-screw expander (4), steam is become after cycle fluid is heated, enter single-screw expander (4) expansion work, single-screw expander (4) is connected to generator (5) drive electrical generators (5) generating, exhaust steam after expanding in single-screw expander (4) enters after regenerator (6) preheating enters the front cycle fluid of molten salt heater (3) along pipeline, enter hot water heat exchanger (7) and be condensed into liquid state, liquid circulation working medium enters lava heater (3) by working medium circulating pump (8) pressurization and starts to circulate next time, hot water in hot water exchanger (7) after heating enters resident family by pipeline, provides heating, needed for domestic hot-water lives to it, described dish-style condenser (10) is installed with journey for one or more parallel connection.
2. a kind of disc type solar energy cogeneration system based on single-screw expander and fused salt according to claim 1, is characterized in that: described cycle fluid adopts organic working medium or water; Single-screw expander (4) is single stage format or multi-level form, and multilevel system is designed to series, parallel or hybrid connected structure; Single-screw expander selects nonmetal-metal screw star wheel rotor secondary.
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| CN201310279662.2A CN103321861B (en) | 2013-07-04 | 2013-07-04 | A kind of disc type solar energy cogeneration system based on single-screw expander and fused salt |
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| CN201310279662.2A CN103321861B (en) | 2013-07-04 | 2013-07-04 | A kind of disc type solar energy cogeneration system based on single-screw expander and fused salt |
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| CN103321861B true CN103321861B (en) | 2016-04-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104196688A (en) * | 2014-08-22 | 2014-12-10 | 张从尧 | Molten salt electricity generation system with energy storage function |
| CN105065218A (en) * | 2015-09-02 | 2015-11-18 | 北京工业大学 | Multi-stage single-screw line-focusing solar heat and electricity co-generation system integrating fused salt heat storage |
| CN107101394A (en) * | 2016-02-23 | 2017-08-29 | 黄斌 | A kind of concavo-convex focus lamp device of solar generating |
| CN106121943B (en) * | 2016-07-25 | 2018-10-19 | 衢州学院 | A kind of screw expansion unit |
| CN107905862A (en) * | 2017-11-24 | 2018-04-13 | 兰州理工大学 | Solar energy butterfly is vortexed electricity generation system round the clock |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413719A (en) * | 2007-10-17 | 2009-04-22 | 中国科学院工程热物理研究所 | Tower type solar heat power generation system with double-stage thermal storage |
| CN102242699A (en) * | 2010-05-12 | 2011-11-16 | 中国科学院工程热物理研究所 | Double-stage heat storage trough type solar thermal power generation system |
| CN202971062U (en) * | 2012-11-22 | 2013-06-05 | 飞秒光电科技(西安)有限公司 | Trough type solar concentrating heat power generation device |
| CN203374438U (en) * | 2013-07-04 | 2014-01-01 | 北京工业大学 | Disc-type solar co-generation system based on single-screw expansion machine and fused salt |
-
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- 2013-07-04 CN CN201310279662.2A patent/CN103321861B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413719A (en) * | 2007-10-17 | 2009-04-22 | 中国科学院工程热物理研究所 | Tower type solar heat power generation system with double-stage thermal storage |
| CN102242699A (en) * | 2010-05-12 | 2011-11-16 | 中国科学院工程热物理研究所 | Double-stage heat storage trough type solar thermal power generation system |
| CN202971062U (en) * | 2012-11-22 | 2013-06-05 | 飞秒光电科技(西安)有限公司 | Trough type solar concentrating heat power generation device |
| CN203374438U (en) * | 2013-07-04 | 2014-01-01 | 北京工业大学 | Disc-type solar co-generation system based on single-screw expansion machine and fused salt |
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