CN109268099A - One kind combining marine diesel residual neat recovering system and its method with Organic Rankine Cycle based on thermo-electric generation - Google Patents
One kind combining marine diesel residual neat recovering system and its method with Organic Rankine Cycle based on thermo-electric generation Download PDFInfo
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- CN109268099A CN109268099A CN201811216260.7A CN201811216260A CN109268099A CN 109268099 A CN109268099 A CN 109268099A CN 201811216260 A CN201811216260 A CN 201811216260A CN 109268099 A CN109268099 A CN 109268099A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000013535 sea water Substances 0.000 claims abstract description 101
- 239000002826 coolant Substances 0.000 claims abstract description 81
- 238000001816 cooling Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 239000000110 cooling liquid Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 210000000476 body water Anatomy 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 238000011084 recovery Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000005678 Seebeck effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- 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
- F01K13/00—General layout or general methods of operation of complete plants
-
- 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
-
- 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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
- F03G7/05—Ocean thermal energy conversion, i.e. OTEC
-
- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Sustainable Development (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses one kind to combine marine diesel residual neat recovering system and its method, including diesel engine intake subsystem, diesel engine cooling subsystem, exhaust flow path, TEG subsystem, ORC subsystem, seawater cooling subsystem and electronic management system with Organic Rankine Cycle based on thermo-electric generation；It is disposed with thermoelectric generator between exhaust flow path and diesel engine cooling subsystem, TEG subsystem is constituted with this, passes through thermo-electric generation between the two；ORC subsystem carries out heat by ORC evaporator with exhaust flow path and exchanges；The electric energy that ORC subsystem is issued by the generator that thermodynamic cycle is converted heat energy into expanding machine is coaxially connected；Seawater cooling subsystem is used to final condensation ORC working medium and Diesel Engine Coolants；The electronic management system is diesel engine ECU a part, for controlling driving circulation.The present invention takes full advantage of the temperature difference between diesel exhaust waste heat and exhaust gas and coolant liquid, is recycled and is converted to electric energy, is used for other electrical equipments of ship, further improves diesel oil energy conversion efficiency.
Description
Technical field
The present invention relates to the waste heat recycling fields of energy field more particularly to internal combustion engine, especially a kind of to be sent out based on the temperature difference
Electricity combines marine diesel residual neat recovering system and its method with Organic Rankine Cycle.
Technical background
With the further in-depth of economic globalization, a large amount of international trade makes Shipping industry accelerated development, again
Due to currently without the alternative power source found suitably in terms of power density, cost and economy, diesel engine is still
The irreplaceable machine of shipping.However, the efficiency of marine diesel only has due to the irreversibility in conversion process of energy
48%-51%, remaining energy are dissipated in an atmosphere in the form of being vented with thermal energy such as cooling waters, cause the wave of the energy
Take.
Therefore, various advanced combustion technologies are used to realize diesel engine more preferably fuel-economy performance, but with these skills
Art has reached the stage of ripeness, and seeking to be further improved using these methods becomes more and more difficult.Improve the one of whole efficiency
The valuable alternative of kind is capture and recovery waste heat.Marine diesel, especially large-tonnage marine diesel for a long time with
Constant speed operation, i.e., can aboard ship be better achieved the recycling of waste heat.
Existing heat recovery technology mainly has turbocharging technology, thermoelectric generation, Organic Rankine Cycle, card Linne
The combined-cycle technology etc. that circulation, Technique of Utilizing Waste Heat For Refrigeration, desalination technology and a variety of above technological synthesis use, but these
It is insufficient that technology all haves the shortcomings that heat-source energy utilizes.
Summary of the invention
Present invention aims at followed based on thermo-electric generation with organic Rankine in view of the deficienciess of the prior art, providing one kind
Ring combines marine diesel residual neat recovering system and its method, can further utilize marine diesel waste heat, improve bavin peculiar to vessel
Oil machine net power output and system effectiveness.
The present invention discloses one kind first and combines the recycling of marine diesel waste heat with Organic Rankine Cycle based on thermo-electric generation
System, including diesel engine intake subsystem, diesel engine cooling subsystem, exhaust flow path, TEG subsystem, ORC subsystem, seawater
Cooling subsystem and electronic management system.
The diesel engine cooling subsystem is Diesel Engine Coolants cooling circuit comprising: coolant pump is connected to upstream
Cooling liquid storage tank is connected by V belt translation by external diesel engine front end belt pulley and is driven；TEG cold end heat exchanger plate, setting
In the downstream of coolant pump, is combined with the hot end the TEG heat exchanger plate of the exhaust flow path by thermoelectric generator and constitute the TEG
Subsystem；ORC preheater, setting is in TEG cold end heat exchanger plate downstream, the coolant liquid ORC working medium with the ORC subsystem herein
Carry out direct heat exchange；Coolant liquid condenser, setting in ORC preheater downstream, cooling liquid storage tank upstream, coolant liquid herein with
The seawater of the seawater cooling subsystem carries out direct heat exchange.
The exhaust flow path is dual fuel of diesel engine path, and diesel exhaust successively passes through charging turbine, the hot end TEG heat
Atmosphere is drained into after power board, ORC evaporator.
The TEG subsystem is by thermoelectric generator, the TEG cold end heat exchanger plate of the diesel engine cooling subsystem and institute
The hot end the TEG heat exchanger plate combination for stating exhaust flow path is constituted.
The ORC subsystem is Organic Rankine Cycle circuit comprising: ORC working medium pump is variable frequency pump, is connected to upstream
ORC working medium fluid reservoir, with electronic management system communicate to connect；ORC preheater is arranged in ORC working medium pump downstream, and ORC working medium is herein
Direct heat exchange is carried out with the coolant liquid of the diesel engine cooling subsystem；ORC evaporator is arranged in ORC preheater downstream,
ORC working medium carries out direct heat exchange with the exhaust gas of the exhaust flow path herein；ORC expanding machine is arranged in ORC evaporator downstream,
ORC expanding machine is connected with generator coaxle；ORC working medium condenser is arranged on ORC expanding machine downstream, ORC working medium fluid reservoir
Trip, ORC working medium carry out direct heat exchange with the seawater of the seawater cooling subsystem herein.
The seawater cooling subsystem is the cooling flowing path of ORC working medium and Diesel Engine Coolants, by seawater diesel engine cooling
Branch and the cooling branch composition of seawater ORC comprising: seawater filter, setting is in the cooling main road upstream of seawater；Sea water pump,
For variable frequency pump, setting is communicated to connect in seawater filter downstream with electronic management system；Current divider is arranged in sea water pump downstream；It is cooling
Liquid cooling condenser, be arranged in by current divider shunting from seawater diesel engine cooling downstream branch, seawater herein with the diesel engine
The coolant liquid of cooling subsystem carries out direct heat exchange；ORC condenser, the seawater ORC being arranged in from current divider shunting are cold
But downstream branch, seawater carry out direct heat exchange with the ORC working medium of the ORC subsystem herein.
The electronic management system is external diesel engine ECU a part, with coolant pump and ORC working medium pump communication connection.
The present invention is based on thermo-electric generations combine with Organic Rankine Cycle marine diesel residual neat recovering system work without pair
Diesel engine does any change, workflow of the invention are as follows:
When marine diesel runs on stable navigation operating condition, coolant pump is by Diesel Driven, after coolant liquid is pressurizeed
It is sent into diesel-engine body water jacket；Coolant liquid flows through around water jacket wall and absorbs heat and heat up from water jacket wall；Coolant liquid flows out diesel oil
By TEG cold end heat exchanger plate after machine body, as TEG power generation cold source；ORC preheater is flowed subsequently through, is carried out with ORC working medium straight
Connect heat exchange；Coolant liquid condenser is flowed through later, and coolant liquid will carry out direct heat exchange with seawater herein, and be cooled into diesel oil
Required temperature before machine body；Cooling liquid storage tank is finally flowed into, coolant liquid circulation is completed with this.At the same time, diesel exhaust
It is flowed out from exhaust valve, first passes around charging turbine, charging turbine drives the air compressor work coaxially connected；Then stream
Through the hot end TEG heat exchanger plate, as TEG power generation heat source；ORC evaporator is flowed through later, carries out direct heat exchange with ORC working medium,
Completely vaporize liquid ORC working medium；Last exhaust gas is arranged to atmosphere.Pass through diesel oil by the compressed pressurized air of air compressor
Enter the cylinder in diesel-engine body after machine intercooler is cooling.TEG is generating equipment made of particular semiconductor material, based on plug
Bake effect, due to the presence respectively from coolant liquid and the cold and hot temperature difference between the two ends of exhaust gas, to convert heat energy into electric energy.Have
Machine Rankine cycle is driven by ORC working medium pump, and ORC working medium pump is then by electronic management system frequency control；It is pre- that ORC working medium first flows through ORC
Hot device carries out direct heat exchange with coolant liquid；ORC working medium by preheating enters ORC evaporator, herein with higher temperatures exhaust gas
Direct heat exchange is carried out, waste heat is absorbed and is evaporated to gaseous organic matter；Subsequent gaseous state ORC working medium enters ORC expanding machine, driving
The acting of ORC expanding machine, and finally make to rotate with the generator that ORC expanding machine is coaxially connected, so that thermal energy is mechanical energy, and
Finally it is changed into electric energy；Steam exhaust after acting enters ORC condenser and is cooled to liquid organic working medium and is transported to ORC working medium liquid storage
Tank completes Organic Rankine Cycle with this.In view of the working environment of marine diesel, the final cooling of coolant liquid and ORC working medium is all
It is completed by seawater；Seawater cooling subsystem is driven by sea water pump, and sea water pump is then by electronic management system frequency control；Seawater passes through first
Seawater filter is crossed, the solid impurity in seawater is filtered out；Current divider is flowed into after outflow sea water pump, current divider leads seawater cooling
Road is divided into seawater diesel engine cooling branch and cooling two branches of branch of seawater ORC, and one flows to coolant liquid condenser for cold
But coolant liquid, another flows to ORC condenser and is used to cool down ORC working medium.
In the present invention, coolant liquid is the mixture of water and antifreezing agent, and the mass fraction of antifreezing agent is higher so that coolant liquid
Boiling point with higher and lower freezing point.ORC working medium is organic mixed working fluid of function admirable, so that its evaporation process is not sent out
Life is under the conditions of fixed temperature, to improve ORC cycle efficieny；In addition, some advanced diesel technologies not direct body in the present invention
It is existing, but certain advanced diesel technologies, such as EGR, tail gas disposal technique can be used in combination in the present invention.
The present invention compares with prior art, and beneficial effect mainly has following aspect:
The present invention will come from the most important two strands of waste heats of diesel engine --- and exhaust gas gets up with coolant liquid comprehensive utilization.
(1) present invention utilizes the larger temperature between the relatively low temperature of exhaust gas relatively high temperature and coolant liquid
Difference directly converts heat energy into considerable power output by TEG equipment.
(2) in the present invention, after the heat exchanger plate of the hot end TEG, temperature is declined exhaust gas, so that it is in evaporation ORC work
When matter, it is unlikely to that ORC work is made matter thermal decomposition occur.
(3) in the present invention, after the heat exchanger plate of the hot end TEG, temperature is increased coolant liquid, is preheated as ORC working medium
Heat source improves ORC cycle efficieny.
(4) in the present invention, the cooling of coolant liquid and ORC working medium is shunted by seawater to be cooled down, and takes full advantage of marine diesel
Working environment.
Detailed description of the invention
Fig. 1 is present system schematic diagram；
Fig. 2 is schematic diagram of the embodiment of the present invention.
Wherein, S1- diesel engine intake subsystem, S2- diesel engine cooling subsystem, S3- exhaust flow path, S4-TEG subsystem
System, S5-ORC subsystem, S6- seawater cooling subsystem, 1- diesel-engine body, 2- diesel engine intercooler, 3- inlet air
The cooling liquid cooling of compressor, 10- coolant circuit, 11- coolant pump, 12-TEG cold end heat exchanger plate, 13-ORC preheater, 14-
Condenser, 15- cooling liquid storage tank, 20- exhaust gas drain flow path, 21- charging turbine, the hot end 22-TEG heat exchanger plate, 23-ORC steam
Send out device, 30- Organic Rankine Cycle circuit, 31-ORC working medium pump, 32-ORC expanding machine, 33-ORC working medium condenser, 34-ORC work
The cooling major loop of matter fluid reservoir, 40- seawater, 401- seawater diesel engine cooling branch, 402- seawater ORC cooling branch, 41- seawater
Filter, 42- sea water pump, 43- current divider, C- electronic management system, G- generator, T- thermoelectric generator.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Presently preferred embodiments of the present invention is given, still, the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure of invention more thorough complete
Face.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
Body embodiment purpose, it is not intended that in the limitation present invention.
As shown in fig.1, one kind provided by the invention combines marine diesel with Organic Rankine Cycle based on thermo-electric generation
Residual neat recovering system, including diesel engine intake subsystem S1, diesel engine cooling subsystem S2, exhaust flow path S3, TEG subsystem
S4, ORC subsystem S5, seawater cooling subsystem S6 and electronic management system C, the present invention use parallel type system structure, related subsystem
Thermal energy transmitting is carried out by heat exchanger between system.
As shown in attached drawing 1, attached drawing 2, the diesel engine intake subsystem S1 is by diesel-engine body 1, diesel engine cooling during rolling
Device 2, inlet air compressor 3 form；Fresh air successively passes through inlet air compressor 3 and diesel engine intercooler 2, most
Enter in the cylinder of diesel-engine body 1 afterwards.
As shown in attached drawing 1, attached drawing 2, the diesel engine cooling subsystem S2 is Diesel Engine Coolants cooling circuit, packet
Include: coolant pump 11 is connected to the cooling liquid storage tank 15 of upstream, is connected by external diesel engine front end belt pulley by V belt translation
Driving；TEG cold end heat exchanger plate 12, is arranged in the downstream of coolant pump 11, the hot end the TEG heat exchange with the exhaust flow path S3
Plate 22 constitutes the TEG subsystem S4 by thermoelectric generator T combination；ORC preheater 13 is arranged in TEG cold end heat exchanger plate
12 downstreams, coolant liquid carry out direct heat exchange with the ORC working medium of the ORC subsystem S5 herein；Coolant liquid condenser 14, setting
In 13 downstream of ORC preheater, 15 upstream of cooling liquid storage tank, coolant liquid herein with the seawater of the seawater cooling subsystem S6 into
The direct heat exchange of row.
As shown in attached drawing 1, attached drawing 2, the exhaust flow path S3 is dual fuel of diesel engine path 20, and diesel exhaust is successively
Atmosphere is drained into after charging turbine 21, the hot end TEG heat exchanger plate 22, ORC evaporator 23.
As shown in attached drawing 1, attached drawing 2, the TEG subsystem S4 is by thermoelectric generator T, the diesel engine cooling subsystem
The combination of the hot end the TEG heat exchanger plate 22 of TEG cold end heat exchanger plate 12 and the exhaust flow path S3 is constituted.
As shown in attached drawing 1, attached drawing 2, the ORC subsystem S5 is Organic Rankine Cycle circuit 30 comprising: ORC working medium
Pump 31, is variable frequency pump, is connected to the ORC working medium fluid reservoir 34 of upstream, is communicated to connect with electronic management system C；ORC preheater 13, if
It sets in 31 downstream of ORC working medium pump, ORC working medium carries out directly heat with the coolant liquid of the diesel engine cooling subsystem S2 herein and hands over
It changes；ORC evaporator 23, setting carry out with the exhaust gas of the exhaust flow path S3 straight herein in 13 downstream of ORC preheater, ORC working medium
Connect heat exchange；ORC expanding machine 32 is arranged in 23 downstream of ORC evaporator, and ORC expanding machine 32 is coaxially connected with generator G；ORC work
Matter condenser 33 is arranged in 32 downstream of ORC expanding machine, 34 upstream of ORC working medium fluid reservoir, and ORC working medium is cold with the seawater herein
But the seawater of subsystem S6 carries out direct heat exchange.
As shown in attached drawing 1, attached drawing 2, the seawater cooling subsystem S6 is that ORC working medium and the cooling of Diesel Engine Coolants are flowed
Road is made of the cooling branch 402 of seawater diesel engine cooling branch 401 and seawater ORC comprising: seawater filter 41, setting exist
Seawater cools down 40 upstream of main road；Sea water pump 42 is variable frequency pump, is arranged in 41 downstream of seawater filter, communicates with electronic management system C
Connection；Current divider 43 is arranged in 42 downstream of sea water pump；The seawater from current divider shunting is arranged in coolant liquid condenser 14
401 downstream of diesel engine cooling branch, seawater carry out direct heat exchange with the coolant liquid of the diesel engine cooling subsystem S2 herein；
ORC condenser 33, be arranged in by current divider shunt come seawater ORC cool down 402 downstream of branch, seawater herein with the ORC
The ORC working medium of subsystem S5 carries out direct heat exchange.
As shown in attached drawing 1, attached drawing 2, the electronic management system C is external diesel engine ECU a part, with coolant pump 11 and
31 communication connection of ORC working medium pump.
The course of work of the invention is as follows:
As shown in attached drawing 1, attached drawing 2, one kind provided by the invention is combined based on thermo-electric generation with Organic Rankine Cycle peculiar to vessel
Diesel residual heat recovery system, including diesel engine intake subsystem S1, diesel engine cooling subsystem S2, exhaust flow path S3, TEG
System S4, ORC subsystem S5, seawater cooling subsystem S6 and electronic management system C, when marine diesel runs on stable navigation operating condition
When, coolant pump 11 is sent into 1 water jacket of diesel-engine body by Diesel Driven after coolant liquid is pressurizeed；Coolant liquid is all from water jacket wall
It encloses and flows through and absorb heat from water jacket wall and heat up；Coolant liquid flows out after diesel-engine body 1 by TEG cold end heat exchanger plate 12, as
TEG power generation cold source；ORC preheater 13 is flowed subsequently through, carries out direct heat exchange with ORC working medium；Coolant liquid condenser is flowed through later
14, coolant liquid will carry out direct heat exchange, required temperature before being cooled into diesel-engine body 1 with seawater herein；Finally flow into
Cooling liquid storage tank 14 completes coolant liquid circulation with this.At the same time, diesel exhaust is flowed out from exhaust valve, first passes around increasing
Turbine 21 is pressed, charging turbine 21 drives the air compressor 3 coaxially connected to work；Flow subsequently through the hot end TEG heat exchanger plate
22, as TEG power generation heat source；ORC evaporator 23 is flowed through later, is carried out direct heat exchange with ORC working medium, is made liquid ORC completely
Working medium vaporization；Last exhaust gas is arranged to atmosphere.It is cold by diesel engine intercooler 2 by the compressed pressurized air of air compressor 3
But enter the cylinder in diesel-engine body 1 afterwards.TEG is generating equipment made of particular semiconductor material, is based on Seebeck effect,
Due to the presence respectively from coolant liquid and the cold and hot temperature difference between the two ends of exhaust gas, to convert heat energy into electric energy.Organic Rankine follows
Ring is driven by ORC working medium pump 31, and ORC working medium pump 31 is then by electronic management system C frequency control；ORC working medium first flows through ORC preheater
13, direct heat exchange is carried out with coolant liquid；ORC working medium by preheating enters ORC evaporator 23, herein with higher temperatures exhaust gas
Direct heat exchange is carried out, waste heat is absorbed and is evaporated to gaseous organic matter；Subsequent gaseous state ORC working medium enters ORC expanding machine 32, drives
Dynamic ORC expanding machine 32 does work, and finally makes to rotate with the generator G that ORC expanding machine 32 is coaxially connected, so that thermal energy is machine
Tool energy, and finally it is changed into electric energy；Steam exhaust after acting enters ORC condenser 33 and is cooled to liquid organic working medium and is transported to
ORC working medium fluid reservoir 34, completes Organic Rankine Cycle with this.In view of the working environment of marine diesel, coolant liquid and ORC working medium
It is final cooling all completed by seawater；Seawater cooling subsystem S6 is driven by sea water pump 42, and sea water pump 42 is then by electronic management system C
Frequency control；Seawater first passes around seawater filter 41, filters out the solid impurity in seawater；It is flowed into point after outflow sea water pump 42
Device 43 is flowed, the cooling main road of seawater is divided into seawater diesel engine cooling branch 401 and the cooling branch 402 two of seawater ORC by current divider
Branch, one flows to coolant liquid condenser 14 and is used to cool down coolant liquid, and another flows to ORC condenser 33 and be used to cool down ORC work
Matter.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (6)
1. one kind combines marine diesel residual neat recovering system with Organic Rankine Cycle based on thermo-electric generation, which is characterized in that should
System include diesel engine intake subsystem (S1), diesel engine cooling subsystem (S2), exhaust flow path (S3), TEG subsystem (S4),
ORC subsystem (S5), seawater cooling subsystem (S6) and electronic management system (C)；Wherein diesel engine intake subsystem (S1) by with
The energy in charging turbine (21) conversion engine exhaust gas that inlet air compressor (3) is coaxially connected；Diesel engine cooling subsystem
System (S2) carries out heat by TEG subsystem (S4) with exhaust flow path (S3) and exchanges；ORC subsystem (S5) and diesel engine cooling
System (S2), exhaust flow path (S3), seawater cooling subsystem (S6) respectively by ORC preheater (13), ORC evaporator (23),
ORC working medium condenser (33) carries out heat exchange；Diesel engine cooling subsystem (S2) passes through cold with seawater cooling subsystem (S6)
But liquid cooling condenser (14) carries out heat exchange；Electronic management system (C) passes through the ORC work in automatically controlled circuit connection ORC subsystem (S5)
Matter pumps the sea water pump (42) in (31) and seawater cooling subsystem (S6).
2. a kind of thermo-electric generation that is based on as described in claim 1 combines marine diesel waste heat recycling system with Organic Rankine Cycle
System, which is characterized in that the diesel engine cooling subsystem (S2) is Diesel Engine Coolants cooling circuit, and coolant liquid is stored up from coolant liquid
Flow container (15) sets out, and successively passes through coolant pump (11), diesel-engine body (1), TEG cold end heat exchanger plate (12), ORC preheater
(13), cooling liquid storage tank (15) are flowed back in coolant liquid condenser (14)；Wherein, before coolant pump (11) is by external diesel engine
It holds belt pulley to connect by V belt translation to drive；The hot end the TEG heat of TEG cold end heat exchanger plate (12) and the exhaust flow path (S3) are handed over
It changes plate (22) and the TEG subsystem (S4) is constituted by thermoelectric generator combination；Coolant liquid in ORC preheater (13) with it is described
The ORC working medium of ORC subsystem (S5) carries out heat exchange；Coolant liquid is cooling sub with the seawater in coolant liquid condenser (14)
The seawater of system (S6) carries out heat exchange.
3. a kind of thermo-electric generation that is based on as described in claim 1 combines marine diesel waste heat recycling system with Organic Rankine Cycle
System, which is characterized in that the exhaust flow path (S3) is dual fuel of diesel engine path, and diesel exhaust successively passes through charging turbine
(21), the hot end TEG heat exchanger plate (22), ORC evaporator drain into atmosphere after (23).
4. a kind of thermo-electric generation that is based on as claimed in claim 1 or 2 combines marine diesel waste heat time with Organic Rankine Cycle
Receipts system, which is characterized in that the ORC subsystem (S5) is Organic Rankine Cycle circuit, and organic working medium is from ORC working medium fluid reservoir
(34) it sets out, successively passes through ORC working medium pump (31), ORC preheater (13), ORC evaporator (23), ORC expanding machine (32), ORC
Working medium condenser (33) flows back to ORC working medium fluid reservoir (34)；Wherein, ORC working medium pump (31) is variable frequency pump, with the electronic management system
(C) it communicates to connect；ORC working medium carries out heat with the coolant liquid of the diesel engine cooling subsystem (S2) in ORC preheater (13)
Amount exchange；ORC working medium carries out heat with the exhaust gas of the exhaust flow path (S3) in ORC evaporator (23) and exchanges；ORC expanding machine
(32) with generator (G) is coaxial is connected；ORC working medium seawater cooling subsystem (S6) described in ORC working medium condenser (33)
Seawater carries out heat exchange.
5. a kind of thermo-electric generation that is based on as claimed in claim 1 or 2 combines marine diesel waste heat time with Organic Rankine Cycle
Receipts system, which is characterized in that the seawater cooling subsystem (S6) is the cooling flowing path of ORC working medium and Diesel Engine Coolants, by
Seawater diesel engine cooling branch (401) and seawater ORC cooling branch (402) composition, seawater are taken out from ocean by sea water pump (42)
Out, it filters, flows into current divider (43), seawater is divided into seawater diesel engine cooling branch here by seawater filter (41)
(401) branch (402) two-way is cooled down with seawater ORC, hereafter respectively using coolant liquid condenser (14) and ORC working medium condenser
(33) it flows back in ocean；Wherein, sea water pump (42) is variable frequency pump, is communicated to connect with the electronic management system (C)；Seawater is in coolant liquid
Condenser (14) carries out heat with the coolant liquid of the diesel engine cooling subsystem (S2) and exchanges；Seawater is in ORC condenser (33)
In carry out heat with the ORC working medium of the ORC subsystem (S5) and exchange.
6. one kind combines marine diesel exhaust heat recovering method with Organic Rankine Cycle based on thermo-electric generation, it is characterised in that:
When marine diesel runs on stable navigation operating condition, coolant pump is sent into after coolant liquid is pressurizeed by Diesel Driven
Diesel-engine body water jacket；Coolant liquid flows through around water jacket wall and absorbs heat and heat up from water jacket wall；Coolant liquid flows out diesel engine machine
By TEG cold end heat exchanger plate after body, as TEG power generation cold source；ORC preheater is flowed subsequently through, carries out directly heat with ORC working medium
Exchange；Coolant liquid condenser is flowed through later, and coolant liquid will carry out direct heat exchange with seawater herein, and be cooled into diesel engine machine
Required temperature before body；Cooling liquid storage tank is finally flowed into, coolant liquid circulation is completed with this；
At the same time, diesel exhaust is flowed out from exhaust valve, first passes around charging turbine, and charging turbine drives coaxially connection
Air compressor work；The hot end TEG heat exchanger plate is flowed subsequently through, as TEG power generation heat source；ORC evaporator is flowed through later, with
ORC working medium carries out direct heat exchange, completely vaporizes liquid ORC working medium；Last exhaust gas is arranged to atmosphere；
Into the gas in diesel-engine body after the compressed pressurized air of air compressor is cooling by diesel engine intercooler
Cylinder, due to the presence respectively from coolant liquid and the cold and hot temperature difference between the two ends of exhaust gas, TEG subsystem converts heat energy into electric energy；
Organic Rankine Cycle is driven by ORC working medium pump, and ORC working medium pump is then by electronic management system frequency control；ORC working medium first flows through
ORC preheater carries out direct heat exchange with coolant liquid；ORC working medium by preheating enters ORC evaporator, herein with it is higher
Warm exhaust gas carries out direct heat exchange, absorbs waste heat and is evaporated to gaseous organic matter；Subsequent gaseous state ORC working medium enters ORC expansion
Machine, driving ORC expanding machine acting, and finally make to rotate with the generator that ORC expanding machine is coaxially connected, so that thermal energy is machine
Tool energy, and finally it is changed into electric energy；Steam exhaust after acting enters ORC condenser and is cooled to liquid organic working medium and is transported to ORC
Working medium fluid reservoir completes Organic Rankine Cycle with this；
The final cooling of coolant liquid and ORC working medium is all completed by seawater；Seawater cooling subsystem is driven by sea water pump, sea water pump
Then by electronic management system frequency control；Seawater first passes around seawater filter, filters out the solid impurity in seawater；Flow out sea water pump
After flow into current divider, the cooling main road of seawater is divided into seawater diesel engine cooling branch and the cooling branch two of seawater ORC by current divider
Branch, one flows to coolant liquid condenser and is used to cool down coolant liquid, and another flows to ORC condenser and be used to cool down ORC working medium.
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| CN201811216260.7A CN109268099B (en) | 2018-10-18 | 2018-10-18 | Marine diesel engine waste heat recovery system and method based on thermoelectric power generation and organic Rankine cycle |
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