CN1138058C - Supercritical backheat-heated engine - Google Patents
Supercritical backheat-heated engine Download PDFInfo
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- CN1138058C CN1138058C CNB001137980A CN00113798A CN1138058C CN 1138058 C CN1138058 C CN 1138058C CN B001137980 A CNB001137980 A CN B001137980A CN 00113798 A CN00113798 A CN 00113798A CN 1138058 C CN1138058 C CN 1138058C
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- pipeline
- supercritical
- supercritical fluid
- backheat
- power piston
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Abstract
The present invention relates to a supercritical back heating and heating engine which comprises a power piston. The power piston, a cylinder, a suction valve and a discharge valve form a power-take-off mechanism and are respectively communicated with a heater and one side of the shell of a heat regenerator for supercritical fluid. The heater is communicated with the tube side of the heat regenerator for supercritical fluid and the discharge end of a circulating pump by pipelines, the suction end of the circulating pump is communicated with the liquid phase of a condenser by a pipeline, and the gas phase of the condenser is communicated with the shell side of the heat regenerator for supercritical fluid by a pipeline. Thus, the present invention has the advantages of external heating, high heat efficiency and simple structure.
Description
The present invention relates to a kind of external heat motor, particularly a kind of supercritical backheat-heated engine.
The external heat motor is meant working medium in the internal system closed circulation, and heating process is undertaken by the wall-type heat exchange mode.Water vapor power cycle, Stirling circulation all are that typical external heat engine cycles, particularly Stirling engine have the backheat regenerator, and theoretical efficiency equals Carnot efficiency.The advantage of external heat is: pluralities of fuel be can adapt to, coal, oil, living beings, various waste heat comprised, even nuclear energy fuel; Combustion process efficient height; Discharging can strict be controlled; Working medium can be selected according to the thermal performance needs.Stirling cylic engine working medium all is to adopt gas mediums such as hydrogen, helium or air to make working medium at present, in order to obtain the higher thermal efficiency and higher power output, intrasystem inflation pressure is generally at 6.0MPa～15.0Mpa, and the actual thermal efficiency can not be satisfactory.Studies show that, utilize phase change medium to obtain higher specific power, conduct heat but also can utilize phase transition process to improve at the mid-inflation stress level, alleviate the problem (Walker that reciprocation sealing brings simultaneously, G. " stirlingEngine ", Oxford University Press, 1980; West, C.D. " Principles and Applications of Stirling Engines ", VananNostrand Reinhold, New York, 1986 ").But, how to realize the never breakthrough of phase change medium cycle heat engine.
The present invention is intended to utilize supercritical fluid backheat heating process to realize the continuous transfer principle of liquid to gas, a kind of external heat phase transformation heat release heat engine is proposed, its advantage is, except utilizing phase change medium to reduce uniform charge pressure, improve specific power, improve outside the heat transfer, can improve the efficient of heat engine, select suitable working medium, its thermal efficiency of cycle will reach the peak efficiency of other thermodynamic cycle at present.
Fig. 1 is structure principle chart of the present invention and embodiment one.
Fig. 2 is embodiments of the invention two.
Below in conjunction with accompanying drawing structural principle of the present invention and working principle are described further.
The present invention includes a power piston 1, power piston 1 is formed an active chamber with cylinder 2, active chamber is connected with external heater 9 by suction valve 3 and pipeline, external heater 9 is connected with the pipe side of supercritical fluid regenerator 5 by pipeline, the pipe side of supercritical fluid regenerator 5 is connected by the exhaust end of pipeline with recycle pump 8, the suction side of recycle pump 8 is connected by the liquid phase of pipeline with condenser 6, the gas phase of condenser 6 is connected by the housing of pipeline with supercritical fluid regenerator 5, the shell-side of supercritical fluid regenerator 5 is connected with the active chamber that power piston 1 and cylinder 2 are formed by pipeline and expulsion valve 10, heater 9 comprises external heat loop 4, and condenser 6 comprises external cooling circuit 7.Regenerator 5 is recuperators.
Working principle of the present invention is, the active chamber of being made up of power piston 1 and cylinder 2 is after suction valve 3 is opened, suction is from the High Temperature High Pressure working medium of external heater 9, externally work done, working chamber volume reaches a certain value, and suction valve 3 cuts out, after this, working chamber volume continues to increase, and continues external work done, until the inner dead point of power piston 1, power piston 1 is returned by inner dead point, expulsion valve 10 is opened immediately, arrives outer dead point up to power piston 1, and expulsion valve 10 cuts out, the gas medium of its process active chamber, be discharged into the shell-side of supercritical fluid regenerator 5, lose sensible heat after, enter condenser 6, be condensed into liquid, emit low-temperature heat quantity, then condensed fluid is recycled pump 7 raising pressure to more than the critical pressure, sends into the pipe side of supercritical fluid regenerator 5, absorb heat, the realization gas-liquid is changed continuously, and enters heater 9 by the continuation heating, improves temperature, enter the active chamber of power piston 1 and cylinder 2 compositions again by pipeline and suction valve 3, to finish circulation.
Fig. 2 is embodiments of the invention two, it is characterized in that, turbo-expander 10 has replaced the reciprocator that is made up of power piston 1, cylinder 2, suction valve 3, expulsion valve 10 among the embodiment 1, applicable to the bigger occasion of power, or the cogeneration occasion, and embodiment 1 is applicable to smaller power occasion and shifter etc.
Claims (3)
1. supercritical backheat-heated engine, comprise a power piston (1), power piston (1) is formed an active chamber with cylinder (2), it is characterized in that, active chamber is connected with heater (9) by suction valve (3) and pipeline, be connected with the shell-side of supercritical fluid regenerator (5) by expulsion valve (10) and pipeline, heater (9) is connected by the pipe side of pipeline with supercritical fluid regenerator (5), the pipe side of supercritical fluid regenerator (5) is connected by the exhaust end of pipeline with recycle pump (8) again, the suction side of recycle pump (8) is connected by the liquid side of pipeline with condenser (6), and the gas phase side of condenser (6) is connected by the shell-side of pipeline with supercritical fluid regenerator (5).
2. supercritical backheat-heated engine according to claim 1 is characterized in that, regenerator (5) is a recuperator.
3. supercritical backheat-heated engine according to claim 1 is characterized in that, the power take-off mechanism that power piston (1) and cylinder (2), suction valve (3), expulsion valve (10) are formed can replace with turbo-expander.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001137980A CN1138058C (en) | 2000-04-29 | 2000-04-29 | Supercritical backheat-heated engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001137980A CN1138058C (en) | 2000-04-29 | 2000-04-29 | Supercritical backheat-heated engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1269465A CN1269465A (en) | 2000-10-11 |
| CN1138058C true CN1138058C (en) | 2004-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001137980A Expired - Fee Related CN1138058C (en) | 2000-04-29 | 2000-04-29 | Supercritical backheat-heated engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1138058C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207345A (en) * | 2011-07-07 | 2011-10-05 | 邹国富 | Energy-saving backheating type heating or refrigerating device |
| CN103452701A (en) * | 2012-08-28 | 2013-12-18 | 摩尔动力(北京)技术股份有限公司 | Circulation engine with liquid phases reflowing at different times |
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| CN103147878A (en) * | 2012-02-11 | 2013-06-12 | 摩尔动力(北京)技术股份有限公司 | Phase cycling engine for hot cylinder |
| CN102562356A (en) * | 2012-03-07 | 2012-07-11 | 徐大江 | Outer heat machine |
| CN103291491A (en) * | 2012-05-22 | 2013-09-11 | 摩尔动力(北京)技术股份有限公司 | Liquid flow phase cycle engine |
| CN103644041B (en) * | 2012-05-22 | 2016-08-17 | 摩尔动力(北京)技术股份有限公司 | Roots mechanism entropic cycle engine |
| CN103382901A (en) * | 2012-06-02 | 2013-11-06 | 摩尔动力(北京)技术股份有限公司 | Liquid flow phase cycle engine |
| CN103306750A (en) * | 2012-06-07 | 2013-09-18 | 摩尔动力(北京)技术股份有限公司 | Vapour-liquid operation unit |
| CN103306849A (en) * | 2012-06-08 | 2013-09-18 | 摩尔动力(北京)技术股份有限公司 | Combined piston airstream phase circulating engine |
| CN103306848B (en) * | 2012-06-11 | 2015-05-20 | 摩尔动力(北京)技术股份有限公司 | Combined piston liquid stream phase circulating engine |
| CN103334803A (en) * | 2012-06-11 | 2013-10-02 | 摩尔动力(北京)技术股份有限公司 | Built-up piston steam engine |
| CN103362685A (en) * | 2012-06-13 | 2013-10-23 | 摩尔动力(北京)技术股份有限公司 | Reciprocating channel phase circulation engine |
| CN103470396A (en) * | 2012-06-16 | 2013-12-25 | 摩尔动力(北京)技术股份有限公司 | Phase-circulation engine with conjugated and reciprocated channel |
| CN103306847A (en) * | 2012-06-19 | 2013-09-18 | 摩尔动力(北京)技术股份有限公司 | Gas working phase circulating engine |
| CN103306846B (en) * | 2012-07-07 | 2015-05-20 | 摩尔动力(北京)技术股份有限公司 | Air flow circulating engine |
| CN103452703A (en) * | 2012-08-14 | 2013-12-18 | 摩尔动力(北京)技术股份有限公司 | Multi-combustion-chamber reciprocating flow fluid passage and engine thereof |
| CN103452702A (en) * | 2012-08-28 | 2013-12-18 | 摩尔动力(北京)技术股份有限公司 | Differential time backflow phase circulation engine |
| CN103573466B (en) * | 2012-08-31 | 2015-12-09 | 摩尔动力(北京)技术股份有限公司 | Out-of-phase phase cycle engine |
| CN104500263B (en) * | 2014-11-18 | 2016-01-20 | 西安交通大学 | A kind of multilayer pentagon formula Stirling engine for waste incineration waste heat recovery |
-
2000
- 2000-04-29 CN CNB001137980A patent/CN1138058C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207345A (en) * | 2011-07-07 | 2011-10-05 | 邹国富 | Energy-saving backheating type heating or refrigerating device |
| CN103452701A (en) * | 2012-08-28 | 2013-12-18 | 摩尔动力(北京)技术股份有限公司 | Circulation engine with liquid phases reflowing at different times |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1269465A (en) | 2000-10-11 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040211 |