CN114044119B - Ship multi-power-source electric propulsion system utilizing ammonia fuel - Google Patents
Ship multi-power-source electric propulsion system utilizing ammonia fuel Download PDFInfo
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- CN114044119B CN114044119B CN202111331428.0A CN202111331428A CN114044119B CN 114044119 B CN114044119 B CN 114044119B CN 202111331428 A CN202111331428 A CN 202111331428A CN 114044119 B CN114044119 B CN 114044119B
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- engine
- fuel cell
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 376
- 239000000446 fuel Substances 0.000 title claims abstract description 214
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 183
- 238000010248 power generation Methods 0.000 claims abstract description 44
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003546 flue gas Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000003507 refrigerant Substances 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 239000002918 waste heat Substances 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/20—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
- B63H2021/202—Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units of hybrid electric type
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Fuel Cell (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a ship multi-power-source electric propulsion system utilizing ammonia fuel, which mainly comprises an ammonia fuel engine power generation system, an ammonia fuel cell power generation system and a Rankine cycle power generation system. According to the system, the ammonia fuel cell and ammonia fuel engine mixed electric propulsion system with higher efficiency is adopted, so that the cold energy of ammonia fuel and the high-temperature flue gas waste heat of the ammonia fuel engine are effectively utilized to perform Rankine cycle power generation in the ship electric propulsion process, the efficiency of the Rankine cycle power generation system is improved, the comprehensive power generation efficiency of the whole ship electric propulsion system is further improved, the ship electric propulsion system provided by the invention can greatly reduce ship pollution and marine environment pollution, the environment-friendly and energy-saving concepts of green shipping and green ships are fully embodied, and the system has good practical application value and development prospect.
Description
Technical Field
The invention belongs to the technical field of ships, and particularly relates to a ship multi-power-source electric propulsion system utilizing ammonia fuel.
Background
In recent years, an electric propulsion system of a ship gradually becomes a main propulsion system favored by a high-performance ship due to the advantages of wide speed regulation range, easiness in forward and reverse rotation, high efficiency, high reliability, small volume, convenience in maintenance, small vibration and noise and the like, and the electric propulsion system is environment-friendly or becomes a direction of power development of the ship in the future along with the stricter standards formulated in terms of ship emission by the International Maritime Organization (IMO).
At present, the ship electric propulsion device mainly relies on a traditional internal combustion engine to generate electricity, and then drives a propeller to rotate through an electric motor, so that the operability of the ship is improved, but the traditional internal combustion engine generates a larger burden on the environment, in recent years, IMO continuously puts out stricter requirements, and the aim of reducing the greenhouse gas emission by 50% from 2008 level to 2050 for long-term carbon emission reduction is formulated, so that the reduction of the exhaust emission of the aviation industry is more urgent.
Therefore, in order to meet the emission requirements of ship exhaust gas proposed by IMO, various clean energy sources are presented, ammonia is carbon-free and sulfur-free, and an ammonia fuel engine can also meet the strict emission requirements of IMO, so that ammonia fuel is receiving more and more attention. More importantly, along with the continuous progress of the technology, ammonia fuel cells have been proposed by some students, and the fuel cells are electrochemical devices, are power generation devices which directly convert chemical energy of fuel into electric energy in an electrochemical reaction mode without burning, are environment-friendly, do not generate pollutants, and are ideal electric power sources for ship electric propulsion.
The ammonia fuel cell can not generate pollutant ammonia fuel cell with higher efficiency, generally can reach 60 to 80 percent, and has small environmental pollution, but due to larger size, the ship needs larger propulsion power and smaller power density, so that the ammonia fuel cell is only used as the power source of the ship electric propulsion device to face the problem of higher cost, while the ammonia fuel engine for combusting ammonia has slightly lower efficiency than the ammonia fuel cell, but has higher output power and better stability due to the internal combustion engine, and is still a better power source of the ship electric propulsion system.
On the other hand, in order to save fuel storage space, ammonia fuel is stored in a liquid state on a ship, the temperature is about-33 ℃, but the ammonia fuel needs to be vaporized to the air supply temperature before being sent to an ammonia fuel cell and an ammonia fuel engine, a large amount of cold energy is released in the process, the cold energy is mainly taken away by sea water and other heat sources, the cold energy of the ammonia fuel is wasted, in addition, the propulsion power required by the ship is generally larger, so that the electric propulsion device needs more electric energy, high-temperature flue gas and high-temperature water can be generated when the ammonia fuel engine works, and a large amount of energy is not utilized by the waste heat.
Based on the problems, if the ammonia fuel engine is combined with the ammonia fuel cell with higher efficiency, and the Rankine cycle power generation is realized by utilizing the cold energy of liquid ammonia and the high-temperature flue gas of the ammonia fuel engine, the multi-power-source electric propulsion on the ship by utilizing the energy of the ammonia fuel is realized, and the problems of the cold energy waste of the ammonia fuel and the waste heat waste generated by the ship are solved, the method has better application prospect and practical application value.
Disclosure of Invention
The invention aims to solve the problems and provides a ship multi-power-source electric propulsion system utilizing ammonia fuel. The system mainly comprises: an ammonia fuel engine power generation system, an ammonia fuel cell power generation system, and a rankine cycle power generation system.
Wherein the ammonia fuel engine power generation system comprises: the system comprises a liquid ammonia fuel tank, a lightering pump, a high-pressure booster pump, a first heat exchanger, a first cylinder sleeve water heater, an ammonia fuel engine, a first transmission shaft, an ammonia fuel generator, a power grid processing unit, an electric motor and an ammonia fuel engine fuel supply pipeline.
An ammonia fuel cell power generation system comprising: the low-pressure booster pump, the second heat exchanger, the second cylinder jacket water heater, the ammonia fuel cell and the ammonia fuel cell fuel supply pipeline.
The Rankine cycle power generation system includes: the device comprises a heater, an expander, a second transmission shaft, a generator, a compressor and a smoke exhaust pipeline.
In the power generation system of the ammonia fuel engine, a transfer pump, a high-pressure booster pump, a first heat exchanger, a first cylinder sleeve water heater and the ammonia fuel engine are connected through an ammonia fuel engine fuel supply pipeline in sequence, and the ammonia fuel engine is connected with an ammonia fuel generator through a first transmission shaft. One end of the fuel supply pipeline of the ammonia fuel engine is connected with the lightering pump, and the other end of the fuel supply pipeline of the ammonia fuel engine is connected with the ammonia fuel engine.
In the ammonia fuel cell power generation system, a transfer pump, a low-pressure booster pump, a second heat exchanger, a second cylinder jacket water heater and an ammonia fuel cell are connected in sequence through an ammonia fuel cell fuel supply pipeline. Wherein one end of the ammonia fuel cell fuel supply pipeline is connected with the ammonia fuel engine fuel supply pipeline, and the other end is connected with the ammonia fuel cell.
In the Rankine cycle power generation system, the compressor, the heater, the expander, the first heat exchanger and the second heat exchanger are sequentially connected through pipelines to form a circulating pipeline, the expander is connected with the generator through a second transmission shaft, and the heater is connected with ammonia fuel engine through a smoke exhaust pipeline.
The ammonia fuel generator, the generator and the ammonia fuel cell are respectively connected with the power grid processing unit through circuits, and the power grid processing unit is connected with the motor through circuits.
When the ship needs to realize electric propulsion, the ammonia fuel in the liquid ammonia fuel tank is lightered through the lightering pump, and the lightered ammonia fuel is divided into two paths and respectively enters the ammonia fuel engine fuel supply pipeline and the ammonia fuel cell fuel supply pipeline. In an ammonia fuel engine power supply system, ammonia fuel is pressurized by a high-pressure booster pump to about 8MPa, then flows through a first heat exchanger and a first cylinder sleeve water heater in sequence, firstly consumes part of cold energy by the first heat exchanger, then heats the ammonia fuel by cylinder sleeve water from the ammonia fuel engine through the first cylinder sleeve water heater, and is heated to the air supply temperature of the ammonia fuel engine for combustion of the ammonia fuel engine, and the output work of the ammonia fuel engine drives an ammonia fuel generator to generate power by a first transmission shaft; in the power generation system of the ammonia fuel cell, the ammonia fuel is pressurized to 0.2 MPa-0.3 MPa through a low-pressure booster pump, then flows through a second heat exchanger and a second cylinder jacket water heater in sequence, firstly consumes part of cold energy through the second heat exchanger, and then heats the ammonia fuel through the second cylinder jacket water heater by utilizing cylinder jacket water from an ammonia fuel engine, and the ammonia fuel is heated to the air supply temperature of the ammonia fuel cell for power generation of the ammonia fuel cell; in the Rankine cycle power generation system, a refrigerant capable of phase change is adopted, the refrigerant is compressed through a compressor, then enters a heater, high-temperature flue gas from an ammonia fuel engine enters the heater through a smoke exhaust pipeline, the high-temperature flue gas heats and vaporizes the refrigerant, the vaporized refrigerant enters an expander to expand and do work, a second transmission shaft drives a generator to generate power, the expanded refrigerant sequentially flows through a first heat exchanger and a second heat exchanger to respectively absorb cold energy of ammonia fuel, and the refrigerant is liquefied, so that the Rankine cycle is completed.
In the process, the electricity generated by the generator, the ammonia fuel generator and the ammonia fuel cell respectively enters the power grid processing unit, and the processed electricity is jointly transmitted to the motor, so that the propeller is driven, and the electric propulsion of the ship is realized.
The invention has the advantages that:
1. the system adopts an ammonia fuel cell and ammonia fuel engine mixed electric propulsion system with higher efficiency, and utilizes the cold energy of liquid ammonia to realize Rankine cycle power generation, thereby realizing multi-power source electric propulsion by utilizing the energy of ammonia fuel on a ship and fully utilizing the ammonia fuel.
2. The system heats the refrigerant in the Rankine cycle power generation system by utilizing the high-temperature flue gas generated by the ammonia fuel engine, so that not only can the high-temperature flue gas waste heat generated by the ship be utilized, but also the cold energy in the liquid ammonia vaporization process can be utilized, thereby improving the efficiency of the Rankine cycle power generation system and further improving the comprehensive power generation efficiency of the whole ship electric propulsion system.
3. The electric propulsion system adopted by the system can fully utilize the cold energy of ammonia fuel and the waste heat of the ship, greatly lighten the pollution of the ship and the pollution of marine environment, fully embody the environment-friendly and energy-saving concepts of green shipping and green ship, and has good practical application value and development prospect.
Drawings
FIG. 1 is a system diagram of the present invention;
in the accompanying drawings: 1. a liquid ammonia fuel tank; secondly, a lightering pump; third, the low-pressure booster pump; fourth, the high-pressure booster pump; fifth, the first heat exchanger; sixthly, a first cylinder sleeve water heater; seventhly, an ammonia fuel engine; eighth, the first transmission shaft; seventhly, an ammonia fuel generator; a power grid processing unit; 11, a motor; a heater; 13, an expansion machine; 14, a second transmission shaft; 15. a generator; a second heat exchanger; 17, a compressor; 18, a second cylinder jacket water heater; 19, an ammonia fuel cell; 20. a fuel supply line for an ammonia-fueled engine; an ammonia fuel cell fuel supply line; 22, a smoke exhaust pipeline.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
A multi-power source electric propulsion system for ships using ammonia fuel, as shown in fig. 1, the system mainly comprises: an ammonia fuel engine power generation system, an ammonia fuel cell power generation system, and a rankine cycle power generation system.
Wherein the ammonia fuel engine power generation system comprises: a liquid ammonia fuel tank 1, a transfer pump 2, a high-pressure booster pump 4, a first heat exchanger 5, a first cylinder liner water heater 6, an ammonia fuel engine 7, a first transmission shaft 8, an ammonia fuel generator 9, a power grid processing unit 10, an electric motor 11 and an ammonia fuel engine fuel supply pipeline 20.
An ammonia fuel cell power generation system comprising: a low pressure booster pump 3, a second heat exchanger 16, a second jacket water heater 18, an ammonia fuel cell 19, and an ammonia fuel cell fuel supply line 21.
The Rankine cycle power generation system includes: a heater 12, an expander 13, a second drive shaft 14, a generator 15, a compressor 17, and a smoke exhaust duct 22.
In the power generation system of the ammonia fuel engine, a transfer pump 2, a high-pressure booster pump 4, a first heat exchanger 5, a first cylinder liner water heater 6 and the ammonia fuel engine 7 are sequentially connected through an ammonia fuel engine fuel supply pipeline 20, and the ammonia fuel engine 7 is connected with an ammonia fuel generator 9 through a first transmission shaft 8. Wherein the ammonia fuel engine fuel supply conduit 20 is connected at one end to the transfer pump 2 and at the other end to the ammonia fuel engine 7.
In the ammonia fuel cell power generation system, the transfer pump 2, the low pressure booster pump 3, the second heat exchanger 16, the second cylinder jacket heater 18, and the ammonia fuel cell 19 are connected in this order through an ammonia fuel cell fuel supply pipe 21. Wherein an ammonia fuel cell fuel supply line 21 is connected at one end to an ammonia fuel engine fuel supply line 20 and at the other end to an ammonia fuel cell 19.
In the rankine cycle power generation system, the compressor 17, the heater 12, the expander 13, the first heat exchanger 5 and the second heat exchanger 16 are sequentially connected through pipes to form a circulation pipeline, the expander 13 is connected with the generator 15 through the second transmission shaft 14, and the heater 12 is connected with the ammonia fuel engine 7 through the exhaust pipe 22.
The ammonia fuel generator 9, the generator 15 and the ammonia fuel cell 19 are respectively connected with the power grid processing unit 10 through lines, and the power grid processing unit 10 is connected with the motor 11 through lines.
When the ship needs to realize electric propulsion, ammonia fuel in the liquid ammonia fuel tank 1 is lightered out by the lightering pump 2, and the lightered ammonia fuel is divided into two paths and respectively enters the ammonia fuel engine fuel supply pipeline 20 and the ammonia fuel cell fuel supply pipeline 21. In an ammonia fuel engine power supply system, ammonia fuel is pressurized by a high-pressure booster pump 4 to about 8MPa, then flows through a first heat exchanger 5 and a first cylinder sleeve water heater 6 in sequence, firstly consumes part of cold energy by the first heat exchanger 5, then heats the ammonia fuel by cylinder sleeve water from an ammonia fuel engine 7 through the first cylinder sleeve water heater 6, and is heated to the air supply temperature of the ammonia fuel engine 7 for combustion by the ammonia fuel engine 7, and the output work of the ammonia fuel engine 7 drives an ammonia fuel generator 9 to generate power by a first transmission shaft 8; in the power generation system of the ammonia fuel cell, the ammonia fuel is pressurized to 0.2 MPa-0.3 MPa through the low-pressure booster pump 3, then flows through the second heat exchanger 16 and the second cylinder jacket water heater 18 in sequence, firstly consumes part of cold energy through the second heat exchanger 16, then heats the ammonia fuel through the second cylinder jacket water heater 18 by utilizing cylinder jacket water from the ammonia fuel engine 7, and the ammonia fuel is heated to the air supply temperature of the ammonia fuel cell 19 for the ammonia fuel cell 19 to generate power for use, and in addition, the ammonia fuel engine burns the ammonia fuel without generating any pollutant; in the Rankine cycle power generation system, a refrigerant capable of phase change is adopted, the refrigerant is compressed through a compressor 17, then enters a heater 12, high-temperature flue gas from an ammonia fuel engine 7 enters the heater 12 through a smoke exhaust pipeline 22, the refrigerant is heated and gasified, then is directly discharged into the atmosphere, the gasified refrigerant enters an expander 13 to expand and do work, a second transmission shaft 14 drives a generator 15 to generate power, and the expanded refrigerant sequentially flows through a first heat exchanger 5 and a second heat exchanger 16 to respectively absorb cold energy of ammonia fuel, so that the refrigerant is liquefied, and a Rankine cycle is completed.
In the process, the electricity generated by the generator 15, the ammonia fuel generator 9 and the ammonia fuel cell 19 respectively enters the power grid processing unit 10, and the processed electricity is jointly transmitted to the motor 11, so that the propeller is driven, and the electric propulsion of the ship is realized.
The foregoing description is only of a preferred embodiment of the invention, and the specific examples described herein are only for the purpose of illustrating the invention and are not to be construed as limiting the invention. It should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. The utility model provides a many power supply electric propulsion system of boats and ships that utilize ammonia fuel which characterized in that: the system comprises an ammonia fuel engine power generation system, an ammonia fuel cell power generation system and a Rankine cycle power generation system,
wherein the ammonia fuel engine power generation system comprises: a liquid ammonia fuel tank (1), a lightering pump (2), a high-pressure booster pump (4), a first heat exchanger (5), a first cylinder jacket water heater (6), an ammonia fuel engine (7), a first transmission shaft (8), an ammonia fuel generator (9), a power grid processing unit (10), an electric motor (11) and an ammonia fuel engine fuel supply pipeline (20),
an ammonia fuel cell power generation system comprising: a low-pressure booster pump (3), a second heat exchanger (16), a second cylinder jacket water heater (18), an ammonia fuel cell (19) and an ammonia fuel cell fuel supply pipeline (21),
the Rankine cycle power generation system includes: a heater (12), an expander (13), a second transmission shaft (14), a generator (15), a compressor (17) and a smoke exhaust pipeline (22),
the lightering pump (2), the high-pressure booster pump (4), the first heat exchanger (5), the first cylinder sleeve water heater (6) and the ammonia fuel engine (7) are sequentially connected through an ammonia fuel engine fuel supply pipeline (20), one end of the ammonia fuel engine fuel supply pipeline (20) is connected with the lightering pump (2), the other end is connected with the ammonia fuel engine (7),
the lightering pump (2), the low-pressure booster pump (3), the second heat exchanger (16), the second cylinder jacket water heater (18) and the ammonia fuel cell (19) are sequentially connected through an ammonia fuel cell fuel supply pipeline (21), one end of the ammonia fuel cell fuel supply pipeline (21) is connected with an ammonia fuel engine fuel supply pipeline (20), one end is connected with the ammonia fuel cell (19),
the compressor (17), the heater (12), the expander (13), the first heat exchanger (5) and the second heat exchanger (16) are connected in sequence through pipelines,
when the ship is propelled electrically, ammonia fuel in a liquid ammonia fuel tank (1) is lightered out through a lightering pump (2) and respectively enters an ammonia fuel engine fuel supply pipeline (20) and an ammonia fuel cell fuel supply pipeline (21), in an ammonia fuel engine power generation system, ammonia fuel is pressurized to 8MPa through a high-pressure booster pump (4), then sequentially flows through a first heat exchanger (5) and a first cylinder sleeve water heater (6) for combustion of an ammonia fuel engine (7), the ammonia fuel engine (7) outputs work to drive an ammonia fuel generator (9) to generate power through a first transmission shaft (8), in the ammonia fuel cell power generation system, the ammonia fuel is pressurized to 0.2 MPa-0.3 MPa through a low-pressure booster pump (3), then sequentially flows through a second heat exchanger (16) and a second cylinder sleeve water heater (18), and is supplied to an ammonia fuel cell (19) to generate power, in the Rankine cycle power generation system, a refrigerant is compressed through a compressor (17) at first, then enters a heater (12), high-temperature flue gas in the ammonia fuel engine (7) enters a smoke exhaust pipeline (22) for combustion, passes through the first heat exchanger (12), the high-temperature flue gas is vaporized and then flows through the heater (14) to perform expansion of the refrigerant (14), and then sequentially flows through the second heat exchanger (13) to expand the refrigerant to expand and expand the refrigerant to form the second heat exchanger (15), thereby the refrigerant is liquefied to complete a Rankine cycle,
the ammonia fuel generator (9), the generator (15) and the ammonia fuel cell (19) are respectively connected with the power grid processing unit (10) through circuits, the power grid processing unit (10) is connected with the motor (11) through circuits, and electricity generated by the ammonia fuel generator (9), the generator (15) and the ammonia fuel cell (19) respectively enters the power grid processing unit (10), and the processed electricity is jointly transmitted to the motor (11) so as to drive the propeller.
2. A multi-power source electric propulsion system for a marine vessel using ammonia fuel as defined in claim 1 wherein: the heater (12) is connected with the ammonia fuel engine (7) through a smoke exhaust pipeline (22).
3. A multi-power source electric propulsion system for a marine vessel using ammonia fuel as defined in claim 1 wherein: the expander (13) is connected with a generator (15) through a second transmission shaft (14).
4. A multi-power source electric propulsion system for a marine vessel using ammonia fuel as defined in claim 1 wherein: the ammonia fuel engine (7) is connected with the ammonia fuel generator (9) through a first transmission shaft (8).
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| CN202111331428.0A CN114044119B (en) | 2021-11-11 | 2021-11-11 | Ship multi-power-source electric propulsion system utilizing ammonia fuel |
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| CN202111331428.0A CN114044119B (en) | 2021-11-11 | 2021-11-11 | Ship multi-power-source electric propulsion system utilizing ammonia fuel |
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| CN114044119B true CN114044119B (en) | 2024-03-08 |
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| JP7290212B1 (en) | 2022-06-10 | 2023-06-13 | 株式会社三井E&S | Ship power generation system, ship power generation method, and program for controlling ship power generation system |
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| CN112833325A (en) * | 2021-02-05 | 2021-05-25 | 青岛科技大学 | Decarbonization system for LNG power ship by using cold energy of fuel |
| CN113595139A (en) * | 2021-07-26 | 2021-11-02 | 广东海洋大学 | Ship comprehensive power generation system capable of fully utilizing liquid hydrogen energy |
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