CN106703917A - Energy saving method for pneumatic automobile - Google Patents
Energy saving method for pneumatic automobile Download PDFInfo
- Publication number
- CN106703917A CN106703917A CN201710057218.4A CN201710057218A CN106703917A CN 106703917 A CN106703917 A CN 106703917A CN 201710057218 A CN201710057218 A CN 201710057218A CN 106703917 A CN106703917 A CN 106703917A
- Authority
- CN
- China
- Prior art keywords
- environment
- temperature
- source
- pneumatic automobile
- low
- 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
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 210000004243 sweat Anatomy 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a method for forming dual-effect coupled power circulation taking an environment as a high temperature heat source and a low temperature heat source of organic Rankine cycle with low temperature tail gas of a pneumatic automobile as nesting to improve comprehensive energy efficiency of the pneumatic automobile.
Description
Technical field
The present invention relates to it is a kind of be nested organic with environment as high temperature heat source by reuse Pneumatic automobile low temperature exhaust gas
The low-temperature heat source of rankine cycle forms the method that coupling power cycle improves Pneumatic automobile comprehensive energy efficiency.
Background technology
Pneumatic automobile is using air motor as power set.Air motor stores energy using pressure-air, passes through
Gases at high pressure expand the output for realizing mechanical energy in cylinder.Piston engine engine efficiency is low, complex structure, in cylinder
Expansion isothermal difficult to realize, it is impossible to avoid low temperature exhaust gas from discharging the loss in efficiency for causing.
Expanding machine is a kind of refrigerating machine of external output work, with compact conformation it is simple, volumetric efficiency is high, noise and shake
It is dynamic small, high speed performance is good, long service life the advantages of.Expander is adiabatic process, it is impossible to obtain energy output from the external world
Work(cost can only be reduced to working medium enthalpy.Because enthalpy is reduced, increased heat absorption capacity is referred to as expander refrigeration amount to working medium.
Expander refrigeration amount depend on expanding machine work done number.The expanded machine expansion of compressed air is down to 0.1 MPa from 0.6 MPa,
Theoretical temperature drop is up to 80 DEG C -90 DEG C.Existing screw expander compressed air is down to 0.6 MPa of 88 DEG C of actual temperature drop from 1.6 MPas.This
The low temperature cold of sample can be as the low-temperature heat source of the Organic Rankine Cycle with environment as high temperature heat source, so as to improve Pneumatic automobile
Efficiency.
The content of the invention
The present invention relates to a kind of compressed air coupling power cycle, power source be compressed air (liquid nitrogen) or other thermals source,
Air motor is substituted using expanding machine, expander refrigeration amount is used as into the nested organic Lang Ken with environment as high temperature heat source follows
The low-temperature heat source of ring forms coupling power cycle.
Expanding machine output work(be equal to expander refrigeration amount, with expander refrigeration amount as low-temperature heat source, environment temperature for height
The nesting of temperature-heat-source circulate its output equivalent to expanding machine output, it is this coupling power cycle increased an endothermic process (from
Environment), the efficiency of Pneumatic automobile has been significantly improved, compressed air coupling power cycle principle is shown in accompanying drawing 1.
It is air energy the present invention relates to a kind of Pneumatic automobile power-economizing method being associated with compressed air coupling power cycle
Two-way efficiency power cycle.Air can be the environment temperature of perception, be solar radiation heat energy.The circulating heat pump principle
From environment carry energy, heat pump manufacture heat be equal to from environment carry heat with consumption electric energy and.
It is refrigeration, sweat cooling amount (ring that liquid refrigerant is evaporated for environment in the evaporation ends of heat pump from environment heat absorption
The increased heat absorption capacity in border) recepted the caloric equal to refrigerant.The Energy Efficiency Ratio for meaning system using hot and cold simultaneously improves 1 times, claims
Two-way Energy Efficiency Ratio.The expanded machine of heat energy is converted into work(for automobile provides power, and sweat cooling amount enters condensation as cooling medium
Device.The low temperature cold (expander refrigeration amount) that expander is produced is used as the nested organic Lang Ken with environment as high temperature heat source
The low-temperature heat source of circulation, participate in heat exchange (if necessary increase with environment heat exchange) temperature recovery to environment temperature again with condenser in
Cooling medium (sweat cooling amount) exchanges heat, and discharges latent heat condensation liquefaction, is pumped into evaporator through working medium and enters subsequent cycle.Air
The two-way efficiency power cycle principle of energy is shown in accompanying drawing 2.
The two-way efficiency power cycle of air energy can be by Pneumatic automobile energy consumption reduction by 75%, and significantly energy-conservation is because it is same
Heat pump equally make use of environmental energy.Heat pump heating energy efficiency ratio is 4 under environment temperature.Because air can two-way efficiency power cycle
It is coupling cycle and make use of cold and hot two-way efficiency, comprehensive energy efficiency ratio is higher than 4.
By taking low boiling working fluid carbon dioxide as an example, 25 DEG C of environment temperature sets 10 DEG C of (corresponding pressures 4.5 million of evaporating temperature
Handkerchief).4 times of operating pressures of existing air motor of the pressure, completely can be as the power source of air motor.Expanding machine
The bulbs of pressure are down to 0.55 MPa (- 55 DEG C of corresponding temperature) from 4.5 MPas.The temperature difference and pressure difference between expander inlet and outlet
Determine the heat to power output efficiency of expanding machine.
The cold of -55 DEG C of expander outlet as low-temperature heat source and nested Organic Rankine Cycle turbine tail gas (if necessary
Increase and environment) exchange heat, the sweat cooling amount heat exchange condensation liquefaction of 10 DEG C of temperature recovery to 20 DEG C (5.73 MPas) and condenser
(the general Liquid region of carbon dioxide：Pressure is less than 7.35 MPas, between 31 DEG C to -56 DEG C of temperature).
Brief description of the drawings
Fig. 1, compressed air coupling power cycle principle
Fig. 2, air can two-way efficiency power cycle principle
Specific embodiment
Power source is compressed air (liquid nitrogen) or environment thermal energy.Expansion process substitutes pneumatic starting using screw expander
Machine.The low temperature (expander refrigeration amount) that expanding machine acting is produced is used as the nested Organic Rankine Cycle with environment as high temperature heat source
Low-temperature heat source, formed coupling power cycle.
Claims (5)
1. a kind of low temperature by the use of Pneumatic automobile low temperature exhaust gas as the nested Organic Rankine Cycle with environment as high temperature heat source
Thermal source forms the method that coupling power improves Pneumatic automobile comprehensive energy efficiency.
2. according to claim 1, the power source of Pneumatic automobile is compressed air, liquid nitrogen and other thermals source.
3. according to claim 2, other thermals source include but is not limited to low boiling working fluid evaporation from environment absorb heat energy with
And the heat absorption capacity (low temperature cold) produced by heat absorption environment.
4. according to claim 3, compressed air, liquid nitrogen and the expanded machine of other thermals source (replacement air motor) expansion
Externally acting provides power.
5. according to claim 4, expander work done causes the cold (expander refrigeration that gas working medium temperature drop is produced
Amount) as the low-temperature heat source of the nested Organic Rankine Cycle with environment temperature as high temperature heat source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057218.4A CN106703917A (en) | 2017-01-26 | 2017-01-26 | Energy saving method for pneumatic automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057218.4A CN106703917A (en) | 2017-01-26 | 2017-01-26 | Energy saving method for pneumatic automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106703917A true CN106703917A (en) | 2017-05-24 |
Family
ID=58910203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710057218.4A Pending CN106703917A (en) | 2017-01-26 | 2017-01-26 | Energy saving method for pneumatic automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703917A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201021116Y (en) * | 2007-03-30 | 2008-02-13 | 肖英佳 | Low-temperature deep cooling hybrid power pneumatic automobile |
| CN101922318A (en) * | 2010-07-28 | 2010-12-22 | 马重芳 | Single-screw expander and fused salt combined engine system |
| CN202081927U (en) * | 2011-04-03 | 2011-12-21 | 罗良宜 | Low temperature Rankine double cycle power generation device |
| CN103016084A (en) * | 2013-01-04 | 2013-04-03 | 成都昊特新能源技术有限公司 | LNG (Liquefied Natural Gas) cold energy double-turbine power generation system |
-
2017
- 2017-01-26 CN CN201710057218.4A patent/CN106703917A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201021116Y (en) * | 2007-03-30 | 2008-02-13 | 肖英佳 | Low-temperature deep cooling hybrid power pneumatic automobile |
| CN101922318A (en) * | 2010-07-28 | 2010-12-22 | 马重芳 | Single-screw expander and fused salt combined engine system |
| CN202081927U (en) * | 2011-04-03 | 2011-12-21 | 罗良宜 | Low temperature Rankine double cycle power generation device |
| CN103016084A (en) * | 2013-01-04 | 2013-04-03 | 成都昊特新能源技术有限公司 | LNG (Liquefied Natural Gas) cold energy double-turbine power generation system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170524 |
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| WD01 | Invention patent application deemed withdrawn after publication |