CN104748280A - Refrigerating/heating system of air-conditioner of LNG (Liquefied Natural Gas) power-driven vessel - Google Patents
Refrigerating/heating system of air-conditioner of LNG (Liquefied Natural Gas) power-driven vessel Download PDFInfo
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- CN104748280A CN104748280A CN201510172634.XA CN201510172634A CN104748280A CN 104748280 A CN104748280 A CN 104748280A CN 201510172634 A CN201510172634 A CN 201510172634A CN 104748280 A CN104748280 A CN 104748280A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention discloses a refrigerating/heating system of an air-conditioner of an LNG (Liquefied Natural Gas) power-driven vessel; the refrigerating/heating system comprises an LNG vaporization loop, an ice storage circulation loop, a heat recycling loop and a seawater loop. In summers, a two-stage refrigerant and cold energy transferring manner is adopted, cold energy produced by the LNG vaporization during the running of the LNG power-driven vessel is recycled and stored in a cold and heat accumulating device and used as a cold source of an air-conditioning system to meet the cold supplying demand of vessel cabins; in winters, the vaporized LNG enters a power system of a vessel main engine and is combusted to generate a large amount of residual heat for recycling, and the residual heat is used as a heat source of the air-conditioning system to meet the heating demand of the vessel cabins. The cold energy produced during the LNG vaporization and the heat capacity released during combustion are used as the cold and heat sources of the air-conditioning system; therefore, not only the cold and heat demands of the vessel cabins are solved, but the large amount of investment in the refrigerating unit of the air-conditioning system of the vessel is saved; and meanwhile, the refrigerating/heating system solves the mismatching of the LNG vaporization capacity and cold/heat capacities the technical bottleneck of the non-synchronization between the vaporization time and the cold/heat utilization time.
Description
Technical field
The present invention relates to a kind of LNG Power Vessel air conditioner refrigerating/heating system, specifically obtain air conditioner refrigerating/heating system that is energy-efficient, environmental protection with lower cost, particularly relate to one to make full use of ice conserve cold and reclaim LNG Power Vessel when running, LNG produces the low-temperature receiver of a large amount of colds as marine air-conditioning system in vaporescence, and a large amount of waste heats produced during LNG burning after vaporization are as the LNG Power Vessel air conditioner refrigerating of marine air-conditioning system thermal source and heating system, belong to air conditioner technology field.
Background technology
Along with the fast development of global economic integration, shipbuilding industry is full of life, but along with the fast development of shipbuilding industry, the thing followed is exactly the continuous deterioration of marine environment.At present, boats and ships mainly use diesel oil as fuel, and its main component is hydrocarbon and some other element, discharges a large amount of carbon dioxide, sulfide and dust in combustion process, causes huge destruction undoubtedly to marine environment.Therefore the noxious gas emission reduced in gas has become the key issue that environmental protect pollutes.Being the trend of the times of following boats and ships development using LNG as the Power Vessel of fuel, is the Power Vessel of main fuel at present with LNG, main adopts seawater to carry out heat exchange as thermal source with the LNG of-163 DEG C to be vaporized.A large amount of high-grade cold energy of LNG release is directly taken away by seawater, causes the significant wastage of the energy.The low temperature seawater producing a large amount of cold energy after absorbing LNG vaporization directly enters marine, makes surrounding waters be subject to serious cold pollution.
The boats and ships navigated by water on marine site are independently marine movable buildings, and often navigation is in different marine sites for it, and difference variation is larger, and in order to ensure the thermal comfort requirement of crewman and passenger, air-conditioning system is the requisite part of marine system.
At present, marine air-conditioner system uses conventional air-cooled or water-cooling system substantially.Application number is the air-conditioning system that patent discloses a kind of LNG Power Vessel of 201310454497.X, this system is primarily of expansion tank, inlet pipeline, several cabin fan coils, outlet pipeline, Load Regulation heat exchanger, refrigerant water pump, water bath type vaporizer forms, it utilizes water-bath room vaporizer to be vaporized by LNG, and the cold of release is carried out absorbing and utilizing, though this system utilizes LNG to vaporize the cold discharged, but directly use fresh water as refrigerating medium in this system, heat exchange is carried out with LNG in vapor-water heat exchanger, because when LNG vaporizes, heat exchange thermal gradient energy reaches 170 ~ 200 DEG C, may make to carry out the chilled water hyperabsorption cold of heat exchange thus freeze, whole system cannot normally be run, in this system, the evaporating capacity of LNG strictly must mate with air conditioner refrigerating amount simultaneously, especially when boats and ships are at the more NG of the less and marine power requirements of refrigerating capacity, normal required LNG evaporating capacity when running that this system can not meet boats and ships.
Application number is the LNG cold energy utilization device that patent discloses a kind of LNG Power Vessel of 201420183474.X, this system is primarily of the fuel tank storing liquefied natural gas, natural gas output channel in fuel tank is connected with the combustion gas input port of engine after the second heat exchanger through the first heat exchanger successively, first heat exchanger, first heating agent storage bin, cold energy releasing device to be end-to-end formation first cold energy use loop successively by pipeline, second heat exchanger, exhaust pipe of engine cooling jacket, second heating agent storage bin to be end-to-end formation second cold energy Releasing loop successively by pipeline, the composition such as circulating pump in order to heating agent in flow circuits is respectively provided with in first cold energy use loop and the second cold energy Releasing loop, although this system utilizes the pattern of two-stage cold recovery to reclaim the cold that LNG discharges, fully can absorb the cold of the release of LNG.But there is very large defect in this system on cryogenic energy utilization, it by the cryogenic energy utilization that absorbs in first-class heat exchanger in refrigerating chamber, with continuous service institute chilling requirement, there is larger difference because refrigerating chamber runs for the first time, burst size when refrigerating chamber chilling requirement in this system and LNG vaporize also exists larger difference, create and release cold and serious not the mating of chilling requirement, cause LNG evaporating capacity not enough, affect the demand to LNG evaporating capacity when ship power system normally runs; In this secondary cold recovery system, the cold of absorption is used for cooling the jacket water after heating up in Ship Power Equipment.In existing many technology, recycling for engine of boat and ship cooling jacket water waste heat is a lot, and the cold discharged from LNG is used for cooling jacket water by this system, obvious uneconomical environmental protection, not only waste the cold of LNG release, waste the heat in cooling jacket water.
Summary of the invention
The present invention seeks to the defect for above-mentioned prior art and problem, the heat of release when the cold energy of release when being vaporized by LNG in Appropriate application LNG powered ship and LNG burning, cooling, heat demand that a kind of marine air-conditioning system meets ship's space are provided, to reduce the energy resource consumption of marine air-conditioning system, the economy of ship-lifting entirety operation and the feature of environmental protection.
The large energy of LNG vaporization or burning generation in LNG powered ship and marine air-conditioning system cooling and heating are carried out organic combination by the present invention, and a large amount of cold energy of release when utilizing LNG to vaporize, as the low-temperature receiver of marine air-conditioning system, meet boats and ships cooling needs.Utilize LNG to burn and produce a large amount of waste heats as air-conditioning system thermal source, meet marine air-conditioning system heat demand.To reach the optimization of efficiency of energy utilization.Ice-storage air-conditioning cold-storage mode is adopted in the present invention, ice conserve cold utilizes the latent heat of phase change of water to carry out the storage of cold, except can utilizing the sensible heat of a fixed difference difference, the latent heat being ice and water when 0 DEG C is carried out phase transformation of main utilization, compared with water cold storage, the cold-storage ability of ice-storage air-conditioning improves more than 10 times, and cold-storage groove volume can be made to reduce about 80%.Such one side meets ship power and space requirement, and while reducing marine environmental pollution, also reduce the vaporization cost that LNG uses, the extensive use for LNG Power Vessel serves positive impetus.Also the heating needs of marine air conditioning is solved on the other hand, further ship-lifting air conditioner energy saving efficiency.Save the huge electric energy consumed when air-conditioning system is run, largely improve economy and the feature of environmental protection of boats and ships.
The present invention utilizes the mode of ice-storage air-conditioning, solve LNG evaporating capacity not mate with air-conditioning chilling requirement, LNG vaporization time and the nonsynchronous problem of use cool time, when air-conditioning system institute chilling requirement is less, the unnecessary cold produced when then utilizing Ice Storage Tank to store LNG vaporization, LNG evaporating capacity required when ensureing that boats and ships normally run; The waste heat that the present invention discharges when also utilizing the mode of water accumulation of heat to reclaim LNG burning, meet the heat demand of marine air conditioning, the energy efficient realizing LNG Power Vessel utilizes.
For achieving the above object, the present invention adopts following technical scheme.
A kind of LNG Power Vessel air conditioner refrigerating/heating system, to be vaporized loop by LNG, ice conserve cold closed circuit, heat recovery circuit and sea return are formed.Wherein said LNG vaporizes loop successively by LNG fluid reservoir 1, first electrically-controlled valve 2, the import b of First Heat Exchanger 3, outlet a, the second electrically-controlled valve 4, and marine main engine dynamical system 5 is connected and composed by pipe; Described ice conserve cold closed circuit exports c by First Heat Exchanger 3 successively, the import f of the first refrigerant holding vessel 6, first refrigerant pump 7, second heat exchanger 8, outlet e, and valve 9 connects First Heat Exchanger 3 import d by pipe and forms the first refrigerant circulation; G is exported successively by the second heat exchanger 8, second refrigerant holding vessel 10, second refrigerant pump 11, first electric T-shaped valve 13, refrigerant coil pipe 19, second electric T-shaped valve 14 be arranged in cold-storage and thermal storage device 18 connects the second heat exchanger 8 import h by pipe and forms the second refrigerant circulation; Be arranged on the water in the chilled water coil 20 in cold-storage and thermal storage device 18 and the second refrigerant in refrigerant coil pipe 19 connects and composes ice conserve cold closed circuit by utilizing pipeline and ship's space after media for heat exchange; Described heat recovery circuit is successively by marine main engine dynamical system the 5, three electrically-controlled valve 15, and circulating pump 16 and the hot-water coil pipe 17 be arranged in cold-storage and thermal storage device 18 are connected and composed by pipe; Described sea return successively by the first electric T-shaped valve the 13, three heat exchanger 12 import p, outlet m and the 3rd electric T-shaped valve 14 connected and composed by pipe.
Cold-storage and thermal storage device 18 described above is also connected with some air conditioner users.The 3rd described heat exchanger 12 is also provided with sea intake o and seawer outlet n.
First refrigerant described above is phase transformation refrigerant.Described phase transformation refrigerant is preferably any one in R134a or R404a.
Second refrigerant described above is without phase transformation refrigerant, as saline solution or glycol water.Described without phase transformation refrigerant be preferably in saline solution or glycol water any one.
In the present invention, required first refrigerant is and LNG direct heat transfer that therefore the freezing point of the first refrigerant can not be too high, otherwise in heat transfer process, the first refrigerant easily solidifies and blocks pipeline.In addition, in order to the cold energy of recovery LNG as much as possible, phase transformation refrigerant should be selected as the first refrigerant, such as R134a, R404a, according to practical operation situation, also can select other refrigerants.
The second refrigerant required in the present invention mainly accepts the cold that the first coolant transmission is come, and summer carries out heat exchange with the cool storage medium in ice-storage air-conditioning, is stored in by cold in the frozen water in ice-storage air-conditioning, winter direct and seawater to make heat exchange.Therefore not very high to the requirement of the second refrigerant, can adopt without phase transformation refrigerant, as saline solution or glycol water etc.
LNG vaporizes loop: the natural gas output channel of LNG fluid reservoir 1 li is through the first electrically-controlled valve 2, enter First Heat Exchanger 3 by the import b of First Heat Exchanger 3 and the first refrigerant carries out heat exchange, then enter marine main engine dynamical system 5 by the outlet c of First Heat Exchanger 3 and the second electrically-controlled valve 4 and burn for vessel motion provides power support.
Ice conserve cold closed circuit: by entering the second heat exchanger 8 and the second refrigerant heat exchange by the import f of the second heat exchanger 8 after the first refrigerant holding vessel 6 and the first refrigerant pump 7 after the first refrigerant reduces with LNG heat-exchange temperature in First Heat Exchanger, after temperature raises, the first refrigerant enters First Heat Exchanger 3 and LNG heat exchange by the outlet g of the second heat exchanger 8 and valve 9 by the import d of First Heat Exchanger 3, completes the circulation of the first refrigerant.Enter through the second refrigerant holding vessel 10, second refrigerant pump 11 and the first electric T-shaped valve 13 the refrigerant coil pipe 19 be arranged in cold-storage and thermal storage device 18 by the outlet e of the second heat exchanger 8 after second refrigerant and the first refrigerant heat-exchange temperature in the second heat exchanger 8 reduces, raise with the second refrigerant temperature after the water heat exchange in the chilled water coil 20 be arranged in cold-storage and thermal storage device 18, return the second heat exchanger 8 and the first refrigerant heat exchange through the second electric T-shaped valve 14 by the import h of the second heat exchanger 8, complete the circulation of the second refrigerant.Be arranged on water in cold-storage and thermal storage device 8 in chilled water coil 20 and the second refrigerant heat exchange to absorb cold and be frozen into ice, complete the storage of LNG cold energy and carry institute's chilling requirement to ship's space, refrigerating medium in air-conditioning system enters cold-storage and thermal storage device 18 and is taken away by the cold in ice cube, ship's space cooling needs is met by air conditioner heat exchange system, ice-out Cheng Shui in cold-storage and thermal storage device, receive the cold of the second coolant transmission again, complete ice conserve cold closed circuit.
Heat recovery circuit: the LNG after vaporization can produce a large amount of waste heat after entering marine main engine dynamical system 5 work by combustion, main frame cooling water is by the 3rd electrically-controlled valve 15, marine main engine dynamical system 5 is returned after hot-water coil pipe 17 in circulating pump 16 and cold-storage and thermal storage device 18 and the heat storage medium in cold-storage and thermal storage device 18 carry out heat exchange cooling, heat storage medium in cold-storage and thermal storage device 18 carries out heat exchange with the water in the chilled water coil 20 be arranged in wherein, owing to absorbing the heat of heat storage medium in cold-storage and thermal storage device 18, coolant-temperature gage in chilled water coil 20 is delivered to ship's space through air conditioning terminal after raising and is carried out heat exchange, realize ship's space heating demands in winter.
Sea return: when winter, ship's space did not need cooling, second refrigerant and the first refrigerant in the second heat exchanger 8 after heat exchange temperature be decreased through the outlet g of the second heat exchanger 8 through the second refrigerant holding vessel 10, second refrigerant pump 11, the 3rd heat exchanger 12 is entered by another outlet of the first electric T-shaped valve 13, seawater enters after the 3rd heat exchanger 12 and the second refrigerant carry out heat exchange from import o, and ocean temperature reduces and flows out from outlet n.The second refrigerant raised with temperature after seawater to make heat exchange turns back to the second heat exchanger 8 from exporting after m flows out by the second electric T-shaped valve 14, completes the heat exchange of the second refrigerant and seawater.Although this loop is also that the seawater that temperature after heat exchange reduces is entered ocean, but because invention adopts the method for secondary refrigerant cooling, the temperature difference of seawater and the second refrigerant is little, therefore the cold energy carried in specific discharge seawater is few, little compared with the destruction of LNG vaporescence to marine environment in conventional LNG powered ship, more economic environmental protection.
Major function of the present invention is that LNG vaporescence and marine air-conditioning system cold and heat supply demand are carried out organic combination, a large amount of cold energy of release when utilizing LNG to vaporize, as the low-temperature receiver of marine air-conditioning system, and a large amount of waste heats produced after the LNG after vaporization being entered the burning of marine main engine dynamical system reclaim, to meet air conditioner user end heat supply in winter demand, to reach the optimization of efficiency of energy utilization.When the present invention not only solves LNG vaporization when conventional LNG powered ship runs directly and seawater to make heat exchange cause the waste of a large amount of cold energy and the problem of pollution of marine environment, simultaneously by effective waste heat recovery, solve marine air conditioning refrigerating/heating demand, break through LNG evaporating capacity not mate with air conditioner cold accumulation amount, LNG vaporization time with by cool time nonsynchronous technical bottleneck, propose the LNG powered ship air-conditioning system of a kind of low energy consumption, low emission and high energy efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of LNG Power Vessel air conditioner refrigerating/heating system organigram of the present invention.
In figure: 1.LNG fluid reservoir, 2. the first electrically-controlled valve, 3. First Heat Exchanger, 4. the second electrically-controlled valve, 5. marine main engine dynamical system, 6. the first refrigerant holding vessel, 7. the first refrigerant pump, 8. the second heat exchanger, 9. valve, 10. the second refrigerant holding vessel, 11. second refrigerant pumps, 12. the 3rd heat exchangers, 13. first electric T-shaped valves, 14. second electric T-shaped valves, 15. the 3rd electrically-controlled valve, 16. circulating pumps, 17. hot-water coil pipes, 18. cold-storage and thermal storage devices, 19. refrigerant coil pipes, 20. chilled water coil.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of LNG Power Vessel air conditioner refrigerating/heating system, to be vaporized loop by LNG, ice conserve cold closed circuit, and heat recovery circuit and sea return are formed.Wherein said LNG vaporizes loop successively by LNG fluid reservoir 1, first electrically-controlled valve 2, the import b of First Heat Exchanger 3, outlet a, the second electrically-controlled valve 4, and marine main engine dynamical system 5 is connected and composed by pipe; Described ice conserve cold closed circuit, exports c by First Heat Exchanger 3 successively, the import f of the first refrigerant holding vessel 6, first refrigerant pump 7, second heat exchanger 8, outlet e, and valve 9 connects First Heat Exchanger 3 import d by pipe and forms the first refrigerant circulation; G is exported successively by the second heat exchanger 8, second refrigerant holding vessel 10, second refrigerant pump 11, first electric T-shaped valve 13, refrigerant coil pipe 19, second electric T-shaped valve 14 be arranged in cold-storage and thermal storage device 18 connects the second heat exchanger 8 import h by pipe and forms the second refrigerant circulation; Be arranged on the water in the chilled water coil 20 in cold-storage and thermal storage device 18 and the second refrigerant in refrigerant coil pipe 19 connects and composes ice conserve cold closed circuit by utilizing pipeline and ship's space after media for heat exchange; Described heat recovery circuit is successively by marine main engine dynamical system the 5, three electrically-controlled valve 15, and circulating pump 16 and the hot-water coil pipe 17 be arranged in cold-storage and thermal storage device 18 are connected and composed by pipe; Described sea return successively by the first electric T-shaped valve the 13, three heat exchanger 12 import p, outlet m and the 3rd electric T-shaped valve 14 connected and composed by pipe.
Cold-storage and thermal storage device 18 described above is also connected with some air conditioner users.The 3rd described heat exchanger 12 is also provided with sea intake o and seawer outlet n.
First refrigerant described above is phase transformation refrigerant.Described phase transformation refrigerant is preferably any one in R134a or R404a.
Second refrigerant described above is without phase transformation refrigerant, as saline solution or glycol water.Described without phase transformation refrigerant be preferably in saline solution or glycol water any one.
The course of work:
LNG vaporizes loop: the natural gas output channel of LNG fluid reservoir 1 li is through the first electrically-controlled valve 2, enter First Heat Exchanger 3 by the import b of First Heat Exchanger 3 and the first refrigerant carries out heat exchange, then enter marine main engine dynamical system 5 by the outlet c of First Heat Exchanger 3 and the second electrically-controlled valve 4 and burn for vessel motion provides power support.
Ice conserve cold closed circuit: by entering the second heat exchanger 8 and the second refrigerant heat exchange by the import f of the second heat exchanger 8 after the first refrigerant holding vessel 6 and the first refrigerant pump 7 after the first refrigerant reduces with LNG heat-exchange temperature in First Heat Exchanger 3, after temperature raises, the first refrigerant enters First Heat Exchanger 3 and LNG heat exchange by the outlet g of the second heat exchanger 8 and valve 9 by the import d of First Heat Exchanger 3, completes the circulation of the first refrigerant.To be entered the refrigerant coil pipe 19 in cold-storage and thermal storage device 18 through the second refrigerant holding vessel 10, second refrigerant pump 11 and the first electric T-shaped valve 13 by the outlet e of the second heat exchanger 8 after second refrigerant and the first refrigerant heat-exchange temperature in the second heat exchanger 8 reduces, raise with the second refrigerant temperature after the water heat exchange in the chilled water coil 20 in cold-storage and thermal storage device 18, return the second heat exchanger 8 and the first refrigerant heat exchange through the second electric T-shaped valve 14 by the import h of the second heat exchanger 8, complete the circulation of the second refrigerant.Water in cold-storage and thermal storage device 8 in chilled water coil 20 and the second refrigerant heat exchange absorb cold and are frozen into ice, complete the storage of LNG cold energy and carry institute's chilling requirement to ship's space, refrigerating medium in air-conditioning system enters cold-storage and thermal storage device 18 and is taken away by the cold in ice cube, ship's space cooling needs is met by air conditioner heat exchange system, ice-out Cheng Shui in cold-storage and thermal storage device 18, receive the cold of the second coolant transmission again, complete ice conserve cold closed circuit.
Heat recovery circuit: the LNG after vaporization can produce a large amount of waste heat after entering marine main engine dynamical system 5 work by combustion, main frame cooling water is by the 3rd electrically-controlled valve 15, marine main engine dynamical system 5 is returned after hot-water coil pipe 17 in circulating pump 16 and cold-storage and thermal storage device 18 and the heat storage medium in cold-storage and thermal storage device 18 carry out heat exchange cooling, heat storage medium in cold-storage and thermal storage device 18 carries out heat exchange with the water in the chilled water coil 20 be arranged in wherein, owing to absorbing the heat of heat storage medium in cold-storage and thermal storage device 18, coolant-temperature gage in chilled water coil 20 is delivered to ship's space through air conditioning terminal after raising and is carried out heat exchange, realize ship's space heating demands in winter.
Sea return: when winter, ship's space did not need cooling, second refrigerant and the first refrigerant in the second heat exchanger 8 after heat exchange temperature be decreased through the outlet g of the second heat exchanger 8 through the second refrigerant holding vessel 10 and the second refrigerant pump 11, the 3rd heat exchanger 12 is entered by another outlet of the first electric T-shaped valve 13, seawater enters after the 3rd heat exchanger 12 and the second refrigerant carry out heat exchange from import o, and ocean temperature reduces and flows out from outlet n.The second refrigerant raised with temperature after seawater to make heat exchange turns back to the second heat exchanger 8 from exporting after m flows out by the second electric T-shaped valve 14, completes the heat exchange of the second refrigerant and seawater.Although this loop is also that the seawater that temperature after heat exchange reduces is entered ocean, but because patent of the present invention adopts the method for secondary refrigerant cooling, the temperature difference of seawater and the second refrigerant is little, therefore the cold energy carried in specific discharge seawater is few, little compared with the destruction of LNG vaporescence to marine environment in conventional LNG powered ship, more economic environmental protection.
In addition to the implementation, the present invention can also have other implementation methods, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the scope of protection of present invention.
Claims (7)
1. LNG Power Vessel air conditioner refrigerating/heating system, is characterized in that: comprise LNG vaporization loop, ice conserve cold closed circuit, heat recovery circuit and sea return; Described LNG vaporizes loop successively by LNG fluid reservoir (1), the first electrically-controlled valve (2), the import b of First Heat Exchanger (3), outlet a, second electrically-controlled valve (4), marine main engine dynamical system (5) is connected and composed by pipe; Described ice conserve cold closed circuit, successively by the outlet c of First Heat Exchanger (3), first refrigerant holding vessel (6), first refrigerant pump (7), the import f of the second heat exchanger (8), outlet e, valve (9) connects First Heat Exchanger (3) import d by pipe and forms the first refrigerant circulation; G is exported successively by the second heat exchanger (8), second refrigerant holding vessel (10), second refrigerant pump (11), first electric T-shaped valve (13), be arranged on the refrigerant coil pipe (19) in cold-storage and thermal storage device (18), the second electric T-shaped valve (14) connects the second heat exchanger (8) import h by pipe and forms the second refrigerant circulation; Be arranged on the water in the chilled water coil (20) in cold-storage and thermal storage device (18) and the second refrigerant in refrigerant coil pipe (19) connects and composes ice conserve cold closed circuit by utilizing pipeline and ship's space after media for heat exchange; Described heat recovery circuit is successively by marine main engine dynamical system (5), 3rd electrically-controlled valve (15), circulating pump (16) and the hot-water coil pipe (17) be arranged in cold-storage and thermal storage device (18) are connected and composed by pipe; Described sea return is successively by the first electric T-shaped valve (13), and import p, the outlet m of the 3rd heat exchanger (12) and the 3rd electric T-shaped valve (14) are connected and composed by pipe.
2. LNG Power Vessel air conditioner refrigerating/heating system according to claim 1, is characterized in that: described cold-storage and thermal storage device (18) is also connected with some air conditioner users.
3. LNG Power Vessel air conditioner refrigerating/heating system according to claim 1, is characterized in that: the 3rd described heat exchanger (12) is also provided with sea intake o and seawer outlet n.
4. LNG Power Vessel air conditioner refrigerating/heating system according to claim 1, is characterized in that: the first described refrigerant is phase transformation refrigerant.
5. LNG Power Vessel air conditioner refrigerating/heating system according to claim 4, is characterized in that: described phase transformation refrigerant is preferably any one in R134a or R404a.
6. LNG Power Vessel air conditioner refrigerating/heating system according to claim 1, is characterized in that: the second described refrigerant is without phase transformation refrigerant, as saline solution or glycol water.
7. LNG Power Vessel air conditioner refrigerating/heating system according to claim 6, is characterized in that: described without phase transformation refrigerant be preferably in saline solution or glycol water any one.
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| CN105066512A (en) * | 2015-09-14 | 2015-11-18 | 西南石油大学 | LNG satellite station cooling heat and power cogeneration technology |
| CN105444309A (en) * | 2015-12-31 | 2016-03-30 | 成都华气厚普机电设备股份有限公司 | Air conditioner and refrigeratory system for LNG ship |
| CN106394850A (en) * | 2016-10-26 | 2017-02-15 | 中山市蓝水能源科技发展有限公司 | Energy utilizing device of LNG (liquefied natural gas) ship |
| CN106482414A (en) * | 2016-12-01 | 2017-03-08 | 浙江海洋大学 | One kind is used for fishing boat power LNG cold energy stair device |
| CN107202452A (en) * | 2017-06-22 | 2017-09-26 | 江苏科技大学海洋装备研究院 | A kind of LNG vaporization of LNG power fishing boat and refrigeration system and its method of work |
| CN107934229A (en) * | 2017-12-22 | 2018-04-20 | 南京工业大学 | A kind of fresh food hutch that energy is filled using semiconductor refrigerating and vortex tube refrigeration |
| CN108518904A (en) * | 2018-06-13 | 2018-09-11 | 南京工业大学 | It is a kind of to produce solid ice using LNG vaporization release cold energy and the device and its cold energy providing method of marine air-conditioning system low-temperature receiver are provided |
| CN108870604A (en) * | 2018-09-18 | 2018-11-23 | 中国能源建设集团广东省电力设计研究院有限公司 | Air conditioner refrigerating integrated system |
| CN109539626A (en) * | 2018-11-15 | 2019-03-29 | 浙江海洋大学 | LNG cold energy utilization device |
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| CN107934229A (en) * | 2017-12-22 | 2018-04-20 | 南京工业大学 | A kind of fresh food hutch that energy is filled using semiconductor refrigerating and vortex tube refrigeration |
| CN108518904A (en) * | 2018-06-13 | 2018-09-11 | 南京工业大学 | It is a kind of to produce solid ice using LNG vaporization release cold energy and the device and its cold energy providing method of marine air-conditioning system low-temperature receiver are provided |
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| CN110285636A (en) * | 2019-07-17 | 2019-09-27 | 西安热工研究院有限公司 | A kind of simultaneous cold supply system of LNG cold energy and waste heat boiler utilizing waste heat for refrigeration |
| CN111232178B (en) * | 2020-02-22 | 2023-12-08 | 内蒙古正泰易达新能源有限责任公司 | Dry compartment heat preservation system utilizing hot air of LNG ship engine room |
| CN111232178A (en) * | 2020-02-22 | 2020-06-05 | 青岛科技大学 | Utilize dry bulkhead heat preservation system of LNG ship cabin hot-air |
| CN111425974A (en) * | 2020-04-02 | 2020-07-17 | 新兴能源装备股份有限公司 | L NG cold energy utilization device and process thereof |
| WO2022044873A1 (en) * | 2020-08-28 | 2022-03-03 | 三菱重工マリンマシナリ株式会社 | Cold heat recovery system |
| CN112429190A (en) * | 2020-12-02 | 2021-03-02 | 青岛科技大学 | Energy-saving system for improving temperature of cargo hold of container ship by using LNG cold energy |
| CN112815574A (en) * | 2021-01-12 | 2021-05-18 | 青岛科技大学 | Cold accumulation system and method for LNG (liquefied Natural gas) power container ship |
| 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 |
| CN114033581A (en) * | 2021-11-09 | 2022-02-11 | 江苏科技大学 | Cold energy storage and cold/heat energy comprehensive utilization system of LNG power ship |
| CN114033581B (en) * | 2021-11-09 | 2023-11-21 | 江苏科技大学 | Cold energy storage and cold/heat energy comprehensive utilization system of LNG power ship |
| WO2023142394A1 (en) * | 2022-01-29 | 2023-08-03 | 秦皇岛昌浦集团有限公司 | Energy storage-type energy system |
| CN116331457A (en) * | 2022-11-30 | 2023-06-27 | 深海技术科学太湖实验室 | Thermal energy management system for deep sea manned platform and fresh water circulation heating method |
| CN116331457B (en) * | 2022-11-30 | 2024-02-09 | 深海技术科学太湖实验室 | Thermal energy management system for deep sea manned platform and fresh water circulation heating method |
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Application publication date: 20150701 Assignee: Jiangsu Jingqi Technology Co.,Ltd. Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2020980007286 Denomination of invention: An air conditioning refrigeration / heating system for LNG power ship Granted publication date: 20170811 License type: Common License Record date: 20201029 |
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