CN204371436U - The Lang Ken cycle generating system of heat energy efficiency utilization can be realized - Google Patents
The Lang Ken cycle generating system of heat energy efficiency utilization can be realized Download PDFInfo
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- CN204371436U CN204371436U CN201420826988.2U CN201420826988U CN204371436U CN 204371436 U CN204371436 U CN 204371436U CN 201420826988 U CN201420826988 U CN 201420826988U CN 204371436 U CN204371436 U CN 204371436U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model belongs to energy source use field, relates generally to a kind of Lang Ken cycle generating system that can realize heat energy efficiency utilization.This system is a kind of Lang Ken cycle generating system with inverse Carnot's cycle subtense angle, namely between the working medium pump and steam generator of Lang Ken circulation, regenerator is added, and it is formed an inverse Carnot cycle system by backheat medium and pipeline together with regenerator, compressor, expansion valve, condenser, its function be by backheat medium the cooling medium of the device that is condensed in current Lang Ken circulation taken away and emit, the heat energy of a large amount of Systemic absorption, again be transmitted back to the working medium of Lang Ken circulation, and then greatly improve thermoelectricity conversion ratio.
Description
Technical field
The utility model relates to a kind of Lang Ken cycle generating system with inverse Carnot's cycle subtense angle, belongs to energy source use field, particularly relates to new energy application.
Background technique
The low temperature heat energy of less than 150 DEG C is extensively present in nature and industrial processes, as solar energy, biomass energy, geothermal power, and cement plant, Thermal Power Station and chemical plant industrial exhaust heat, if can fully be used, it is then the considerable savings to the energy, therefore, utilize the significant of this part heat energy safe, reliable, efficiently.Compared with traditional water vapour Rankine cycle power generation system, the generating efficiency of organic matter Rankine cycle (ORC) power generation system of employing low boiling organic media is high, environmental friendliness, structure are simple and reliability is high, have become the optimal selection of recycling low temperature heat energy. the state key research of technique problem of one of " energy-conserving and environment-protective industry 9 is waited greatly to break through key core technology " during therefore Rankine cycle screw expansion generator techniques is put into " national emerging strategic industry development outline ".The experts and scholars of the universities and colleges such as University Of Tianjin, Shanghai Communications University, Beijing University of Technology, Zhengzhou University and scientific research institution have also carried out large quantifier elimination, the domestic existing many enterprises now of the generator set of Lang Ken power generation technology are adopted to produce, heat recovery field in main applicable industry production.
Although Lang Ken power generation technology application trend is had an optimistic view of at present, but its heat utilization rate becomes the too low problem of the thermoelectricity conversion ratio of electric energy still to exist with thermal power transfer, at present from the data that Ge Jia manufacturing enterprise announces, although isentropic efficiency is higher but thermal efficiency of cycle is lower, thermoelectricity conversion ratio is generally at about 5%-18%, be applied in heat recovery field still can accept, but be applied in the fields such as the fields such as solar electrical energy generation, biomass power generation, power generation with marine energy, geother-mal power generation, particularly electric heating energy-storage, too low thermoelectricity conversion ratio is difficult to be accepted.
For improving Lang Ken thermal efficiency of cycle (namely decompressor acting and the Lang Ken circulatory system absorb the ratio of heat energy), particularly low temperature heat energy Organic Rankine Cycle power generation applications field, existing many experts and scholars brightness great waves as yellow in Kunming University of Science and Technology, Wang Hua, the heavy virtue of Beijing University of Technology horse, Wu Yuting, Zhu Jiang, University Of Tianjin Ma Yitai, Zhang Yufeng, Li Xinguo, Zhang Jin, Hu Liangguang, Zhengzhou University Ma Xinling etc. did years of researches.Tens kinds were studied in working medium, comprise from single working medium to polynary working medium, from organic working medium to inorganic working medium, decompressor is studied from single-screw machine, dual-screw-stem machine again to turbine engine, scroll machine etc., simultaneously in the duty parameter of each node of the circulatory system, system optimization and system equipment, large quantifier elimination and test are also carried out, from the result of practice, Lang Ken thermal efficiency of cycle is generally no more than 20 percent.
University Of Tianjin Zhang Jin to the structure of molecule of different working medium in desirable Lang Ken circulation, between molecule entropy and thermal efficiency of cycle contact conduct in-depth research (referring to its paper delivered " design for the recoverable Organic Rankine Cycle working medium of Low Temperature Thermal "), from the result of its research, indivedual working medium is had to reach 30%, but user cost is very high, the thermal efficiency of cycle of tens kinds of organic working medium of producing at present is less than 15%.
The thermal efficiency of cycle of Lang Ken circulation is not high, but does not represent and adopt the utilization ratio of its heat energy of equipment of Lang Ken circulating technology just not high.
Fig. 1 is the typical low temperature Organic Rankine Cycle and electricity generating principle schematic diagram thereof applied at present, seen by applicable cases in schematic diagram and reality, the heat energy that in the circulatory system, working medium absorbs from system through vaporizer, after decompressor acting, remaining heat energy has the cooling medium (in upper figure cooling water) be condensed in device greatly to take away, and is not effectively used.
Zhengzhou University Ma Xinling adopts R245fa to do working medium, to the Lang Ken circulatory system, the Lang Ken cycle generating system of turbine expansion power engine and employing turbine engine did long-term research and (referred to " Proceedings of the CSEE " the 34th May 15 2014 volume the 14th phase " design of organic Rankine bottoming cycle low grade heat energy power generation system radial-inward-flow turbine and performance study ", " Zhengzhou University's journal (engineering version) " the 32nd in July, 2011 volume the 4th phase " thermodynamic analysis of Organic Rankine Cycle "), as can be seen from the analysis that its data announced are carried out, the heat energy that in Lang Ken cyclic process, system absorbs has the cooling medium (see cooling water in Fig. 1) being recycled condenser in system up to more than 90% to take away unexpectedly, and emit.
It is the main cause causing the effective rate of utilization of Lang Ken circulatory system heat energy too low that the outer heat energy absorbed of system is not effectively used, also make this technology at the other field except heat recovery field, as the field such as renewable energy sources, generation of electricity by new energy is difficult to promote.
Summary of the invention
Goal of the invention
The utility model relates to a kind of Lang Ken cycle generating system that can realize heat energy efficiency utilization, its objective is the effective rate of utilization in order to improve heat energy and thermoelectricity conversion ratio, and then impel this low temperature heat energy generation technology to be better more widely used in fields such as the field of renewable energy such as solar electrical energy generation, biomass power generation, power generation with marine energy, geother-mal power generation, particularly electric heating energy-storage.
Technological scheme
A kind of Lang Ken cycle generating system that can realize heat energy efficiency utilization, it is characterized in that: this system is the Lang Ken cycle generating system with inverse Carnot's cycle subtense angle, jointly forms primarily of steam generator, expansion motive power machine, generator, condenser, working medium pump, regenerator, working medium and working medium pipeline; Be provided with regenerator between steam generator and working medium pump, steam generator connects expansion motive power machine, and expansion motive power machine connects condenser, and condenser connects working medium pump, and working medium pump connects regenerator, and regenerator connects steam generator; Inverse Carnot's cycle subtense angle is made up of jointly regenerator, expansion valve, compressor, liquid container, condenser, backheat medium and backheat medium pipeline.
In inverse Carnot's cycle subtense angle, the runner connection of backheat medium is: regenerator connects liquid container, liquid container connects expansion valve, expansion valve connects condenser, condenser connects compressor, compressor connection regenerator.
System external heat source, by the heat-carrying agent runner of heat-carrying agent in steam generator, heats to the working medium in steam generator.
Preheater is provided with between steam generator and regenerator.
System external heat source, by the heat-carrying agent runner of heat-carrying agent successively in steam generator and preheater, heats to the working medium in steam generator and preheater.
Working medium and backheat medium are inorganic medium or low boiling organic media.
Expansion motive power machine connects generator.
Condenser and regenerator all adopt Double-flow-channel heat exchanger, and one is working medium runner, and another is backheat medium runner.
Advantage and effect
The utility model is a kind of Lang Ken cycle generating system that can realize heat energy efficiency utilization, has the following advantages:
The utility model is effectively utilized as target with what improve heat energy, propose a kind of Lang Ken cycle generating system with inverse Carnot's cycle subtense angle, compared with existing Lang Ken power generation technology, its heat utilization rate and thermoelectricity conversion ratio can obtain great raising, and then impel this low temperature heat energy generation technology to be better more widely used in fields such as the field of renewable energy such as solar electrical energy generation, biomass power generation, power generation with marine energy, geother-mal power generation, particularly electric heating energy-storage.
Accompanying drawing explanation
Fig. 1 is the typical low temperature Organic Rankine Cycle and electricity generating principle schematic diagram thereof applied at present;
Fig. 2 is a kind of structural representation of the utility model;
Fig. 3 is the another kind of structural representation of the utility model.
Description of reference numerals:
1. steam generator; 2. expansion motive power machine; 3. generator; 4. condenser; 5. working medium pump; 6. regenerator; 7. preheater; 8. throttling or expansion valve; 9. compressor; 10. liquid container; 11. working mediums; 12. backheat media; 13. heat-carrying agents.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
The utility model is a kind of Lang Ken cycle generating system that can realize heat energy efficiency utilization, it is characterized in that: this system is the Lang Ken cycle generating system with inverse Carnot's cycle subtense angle, jointly forms primarily of steam generator 1, expansion motive power machine 2, generator 3, condenser 4, working medium pump 5, regenerator 6, working medium 11 and working medium pipeline; Regenerator 6 is installed between steam generator 1 and working medium pump 5, the runner of the working medium 11 in Lang Ken circulation connects as follows: steam generator 1 connects expansion motive power machine 2, expansion motive power machine 2 connects condenser 4, condenser 4 connects working medium pump 5, working medium pump 5 connects regenerator 6, and regenerator 6 connects steam generator 1; Inverse Carnot's cycle subtense angle is made up of jointly regenerator 6, expansion valve 8, compressor 9, liquid container 10, condenser 4, backheat medium 12 and backheat medium pipeline, the effect of inverse Carnot's cycle subtense angle is by the Lang Ken cycle generating system applied at present by backheat medium 12, the cooling medium of device 4 of being condensed is taken away and the heat energy that are a large amount of, that absorb from system emitted, and is again transmitted back to the working medium of Lang Ken circulation.
In inverse Carnot's cycle subtense angle, the runner annexation of backheat medium 12 is as follows: regenerator 6 connects liquid container 10, liquid container 10 connects expansion valve 8, expansion valve 8 connects condenser 4, condenser 4 connects compressor 9, compressor 9 connects regenerator 6.
As shown in Figure 2, system external heat source, by the heat-carrying agent runner of heat-carrying agent 13 in steam generator 1, heats to the working medium 11 in steam generator 1.
According to concrete operating mode, the preheater in Lang Ken circulation can be installed, and also can not install.
As shown in Figure 3, preheater 7 can also be set between steam generator 1 and regenerator 6.
Now, system external heat source, by the heat-carrying agent runner of heat-carrying agent 13 successively in steam generator 1 and preheater 7, heats to the working medium 11 in steam generator 1 and preheater 7.
Working medium 11 in system and backheat medium 12 can be inorganic mediums, also can be low boiling organic medias.
Expansion motive power machine 2 connects generator 3, can be used as power generation system and uses, can use when expansion motive power machine 2 does not connect generator 3 as power system.
Condenser 4 and regenerator 6 all adopt Double-flow-channel heat exchanger, and one is working medium runner, and another is backheat medium runner.
The utility model can also by adjustment compressor 9 exert oneself and the temperature of heat-carrying agent 13, flow velocity adjust the operating conditions controlling generator.
Working procedure of the present utility model is as follows:
When preheater is not set, system external heat source is by the heat-carrying agent runner of heat-carrying agent 13 in steam generator 1, heat to the working medium 11 in steam generator 1, working medium 11 enters swollen power engine 2 and to do work and then drive electrical generators generates electricity after forming saturated vapour by thermal evaporation, working medium 11 after acting is absorbed in condenser 4, cool, condensation, is more successively pumped into regenerator 6 and steam generator 1 by working medium pump 5 and enters and once circulate.
When preheater is set, system external heat source passes through heat-carrying agent 13 first through the heat-carrying agent runner of steam generator 1 again in preheater 7, heat to the working medium 11 in steam generator 1 and preheater 7, working medium 11 enters after forming saturated vapour by thermal evaporation, and (swollen power engine 2 does work and then drive electrical generators generating, working medium 11 after acting is absorbed in condenser 4, cool, condensation, is more successively pumped into regenerator 6, preheater 7 and steam generator 1 by working medium pump 5 and enters and once circulate.
The effect of inverse Carnot's cycle (i.e. heat pump) subtense angle is by backheat medium 12, evaporate within the condenser as freezing mixture on the one hand, the heat of working medium 11 in absorptive condenser 4, and it is cooled and condensation, the backheat medium 12 evaporated after absorbing heat on the other hand becomes high temperature after compressor 9 compresses, high-pressure medium stream is sent in regenerator 6, goes to heat the working medium 11 in regenerator 6.So just the cooling medium of the device that is condensed in current Lang Ken cycle generating system, particularly low temperature Organic Rankine Cycle and power generation system thereof can be taken away and the heat energy that are a large amount of, that absorb from system emitted, again be transmitted back to again and circulate to working medium next time.
Claims (8)
1. one kind can realize the Lang Ken cycle generating system of heat energy efficiency utilization, it is characterized in that: this system is the Lang Ken cycle generating system with inverse Carnot's cycle subtense angle, jointly forms primarily of steam generator (1), expansion motive power machine (2), generator (3), condenser (4), working medium pump (5), regenerator (6), working medium (11) and working medium pipeline; Regenerator (6) is installed between steam generator (1) and working medium pump (5), steam generator (1) connects expansion motive power machine (2), expansion motive power machine (2) connects condenser (4), condenser (4) connects working medium pump (5), working medium pump (5) connects regenerator (6), and regenerator (6) connects steam generator (1); Inverse Carnot's cycle subtense angle is made up of jointly regenerator (6), expansion valve (8), compressor (9), liquid container (10), condenser (4), backheat medium (12) and backheat medium pipeline.
2. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 1, is characterized in that: in inverse Carnot's cycle subtense angle, the runner connection of backheat medium (12) is: regenerator (6) connects liquid container (10), liquid container (10) connects expansion valve (8), expansion valve (8) connects condenser (4), condenser (4) connects compressor (9), compressor (9) connection regenerator (6).
3. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 1 and 2, it is characterized in that: system external heat source, by the heat-carrying agent runner of heat-carrying agent (13) in steam generator (1), heats to the working medium (11) in steam generator (1).
4. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 1 and 2, is characterized in that: be provided with preheater (7) between steam generator (1) and regenerator (6).
5. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 4, it is characterized in that: system external heat source, by the heat-carrying agent runner of heat-carrying agent (13) successively in steam generator (1) and preheater (7), heats to the working medium (11) in steam generator (1) and preheater (7).
6. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 1 and 2, is characterized in that: working medium (11) and backheat medium (12) are inorganic medium or low boiling organic media.
7. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 1 and 2, is characterized in that: expansion motive power machine (2) connects generator (3).
8. the Lang Ken cycle generating system that can realize heat energy efficiency utilization according to claim 1 and 2, is characterized in that: condenser (4) and regenerator (6) all adopt Double-flow-channel heat exchanger, and one is working medium runner, and another is backheat medium runner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420826988.2U CN204371436U (en) | 2014-12-24 | 2014-12-24 | The Lang Ken cycle generating system of heat energy efficiency utilization can be realized |
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| CN201420826988.2U CN204371436U (en) | 2014-12-24 | 2014-12-24 | The Lang Ken cycle generating system of heat energy efficiency utilization can be realized |
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| CN204371436U true CN204371436U (en) | 2015-06-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481619A (en) * | 2014-12-24 | 2015-04-01 | 辽宁中联能源科技有限公司 | Rankine cycle power generation system capable of realizing efficient utilization of heat energy |
| CN105841394A (en) * | 2016-03-22 | 2016-08-10 | 顾皖平 | Double-closed-circuit circulating air energy utilization system |
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2014
- 2014-12-24 CN CN201420826988.2U patent/CN204371436U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481619A (en) * | 2014-12-24 | 2015-04-01 | 辽宁中联能源科技有限公司 | Rankine cycle power generation system capable of realizing efficient utilization of heat energy |
| CN105841394A (en) * | 2016-03-22 | 2016-08-10 | 顾皖平 | Double-closed-circuit circulating air energy utilization system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20161224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |