CN107345728A - A kind of cold energy of liquefied natural gas peculiar to vessel is used for the System and method for of freezer refrigerating - Google Patents
A kind of cold energy of liquefied natural gas peculiar to vessel is used for the System and method for of freezer refrigerating Download PDFInfo
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- CN107345728A CN107345728A CN201710456749.0A CN201710456749A CN107345728A CN 107345728 A CN107345728 A CN 107345728A CN 201710456749 A CN201710456749 A CN 201710456749A CN 107345728 A CN107345728 A CN 107345728A
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- refrigerant
- natural gas
- freezer
- liquefied natural
- sorage
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
- F25D3/102—Stationary cabinets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
Abstract
The present invention relates to the System and method for that a kind of cold energy of liquefied natural gas peculiar to vessel is used for freezer refrigerating, the system includes refrigerant circulation portion, natural gas reheating portion between refrigerant circulation portion, freezer sorage between LNG storage and boost in pressure portion, chilled storage.Compared with prior art, system proposed by the present invention is to discharge the principle of cold energy during regasifying as power-equipment fuel based on LNG peculiar to vessel, circulated by two independent cooling agent in parallel, institute's chilling requirement is provided respectively between the different chilled storage of vessel temperature grade between freezer sorage, the operating of freezer is set to have saved substantial amounts of initial cost and operation freight charges without using refrigeration machine.The inlet temperature of natural gas reheater guarantee gas turbine is set by end, to ensure the dynamical system needs of LNG power cargo ships.
Description
Technical field
The invention belongs to chemical industry and cryogenic technique field, is used for freezer more particularly, to a kind of cold energy of liquefied natural gas peculiar to vessel
The System and method for of refrigeration.
Background technology
Liquefied natural gas (Liquefied Natural Gas, LNG) is that normal-temperature natural-gas passes through depickling, dewater treatment, then
A kind of colourless, tasteless, the nontoxic and transparent cryogenic liquid for liquefying and being formed by refrigerating process.LNG cold energy is primarily referred to as profit
With LNG and the temperature difference and pressure differential of surrounding environment (such as air, seawater), the energy reclaimed during tending to balance
Amount.- 162 DEG C are in by LNG temperature, the cold containing 840kJ/kg calculates, and one ton of LNG is available cold to bankAbout
250kWh, year of many LNG receiving stations of China to bank LNG amounts are 3,000,000 tons/year, are calculated with this amount, then year available gasification
It is coldFor 71,500,000,000 kWh.
At present, the operation power on domestic LNG power cold-stroage boat is entered subsequently by LNG after seawater vaporizer gasifies
Power-equipment does work and produced, and LNG cold energy then passes to surrounding environment such as seawater or air and causes huge loss of refrigeration capacity, and
Freezer on ship is freezed using conventional refrigerant system.Traditional freezer is all to maintain the low of freezer using single stage compress refrigerating plant
Temperature, power consumption are very big.It is a kind of extraordinary cold energy use mode that cold energy by reclaiming LNG, which supplies freezer cold,.By LNG with it is cold
Matchmaker carries out heat exchange in cryogenic heat exchanger, and the refrigerant after cooling enters freezing or freezer through pipeline, is released by cooling coil
The amount of letting cool, realize the freezing and refrigeration to article.Freezer now has saved substantial amounts of initial cost and operation is transported without using refrigeration machine
Take, about 1/3 electric power can also be saved.
For the general principle that freezer provides cold it is by LNG- refrigerant heat exchangers, using LNG as low temperature using LNG cold energy
Low-temperature receiver, realize the liquefaction of gaseous refrigerant.In prior art, patent publication No. CN201410142746.6, entitled " one kind is filled
Point using cold energy of liquefied natural gas cold storage refrigerating system " patent, disclose one kind using ethylene glycol, water as working medium, by return
The system and method that LNG cold energy realizes freezer refrigerating are received, this patent content is not directed to the operation of different temperatures grade freezer.Specially
Sharp application number 201410142527.8, entitled " a kind of cold-storage refrigeration storage system that can make full use of cold energy of liquefied natural gas " it is special
Profit, the system play the function of cold energy of liquefied natural gas peak load shifting, effectively on the premise of liquefied natural gas gasifying is not influenceed
Improve the Energy Efficiency Ratio of kind of refrigeration cycle, fully ensured that refrigeration performance is stable.The patent content system operation is complicated, and is not suitable for ship
The application of upper freezer.Number of patent application 200420114636.0, entitled " recovery cold energy of liquefied natural gas is used for the refrigeration of freezer
The patent of device ", the device include storage tank, liquefied natural gas pump, refrigerated medium pump, heat exchanger, heater, evaporator and blower fan.
LNG tank is connected by the tube side import of liquefied natural gas pump and heat exchanger, and heat exchanger tube pass outlet adds by gas
Hot device is connected with user's pipe network, and the shell-side outlet of heat exchanger is connected by refrigerated medium pump with the evaporator in cold storage,
Evaporator outlet is connected with the shell side import of heat exchanger, and axial flow blower is arranged on by evaporator, in evaporator and the shell of heat exchanger
In journey, filled with R410A refrigerants.But this patented technology is also to provide a kind of freezer of temperature grade merely with LNG cold energy.
Patent publication No. CN105716183A, the patent of entitled " a kind of LNG vaporization peculiar to vessel and air conditioner integration system and control method ",
A kind of LNG vaporization peculiar to vessel of the disclosure of the invention and air conditioner integration system and control method, the patent content merely relate to LNG vaporization
With the integrated operation of air-conditioning system, though the patent is the utilization system of LNG cold energy peculiar to vessel, only the cold of air-conditioning exports.Specially
Sharp application number 201620307968.3, the patent of entitled " a kind of LNG vaporization peculiar to vessel and air conditioner integration system ", the patent utilization
The heat that LNG discharges in cold energy caused by vaporization and burning, solves the problems, such as LNG vaporization, meets marine air conditioning refrigeration
And heating needs, the patent content are also not directed to the application of freezer cold on ship.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind can make full use of
The system and method that cold energy of liquefied natural gas peculiar to vessel realizes freezer refrigerating.By refrigerant parallel circulating loop be embodied as it is peculiar to vessel not
The refrigeration of synthermal grade freezer, improve the utilization ratio of cold energy；Meanwhile the present invention can be by means of exclusive excellent of LNG peculiar to vessel
Gesture, the high temperature heat source of NG reheating is used as by the use of seawater or combustion turbine exhaustion.
The purpose of the present invention can be achieved through the following technical solutions：
The system that a kind of cold energy of liquefied natural gas peculiar to vessel is used for freezer refrigerating, including LNG storage and boost in pressure
Refrigerant circulation portion, natural gas reheating portion between refrigerant circulation portion, freezer sorage between portion, chilled storage,
The LNG storage includes LNG storage tank and with storing up tank connected LNG force (forcing) pumps with boost in pressure portion；
Refrigerant circulation portion includes the liquefied natural gas-chilled storage being sequentially connected through pipeline between the chilled storage
Between refrigerant evaporator between refrigerant circulation pump, chilled storage between refrigerant heat exchanger, chilled storage, be specially：LNG-
The outlet of refrigerant heat exchanger connects the entrance of refrigerant side circulating pump between chilled storage, the cooling thing between chilled storage
The entrance of refrigerant evaporator between the outlet connection chilled storage of refrigerator refrigerant side circulating pump, between the chilled storage
The entrance of refrigerant heat exchanger between the outlet connection LNG- chilled storages of refrigerant evaporator；
Refrigerant circulation portion includes the liquefied natural gas-freezer sorage being sequentially connected through pipeline between the freezer sorage
Between refrigerant evaporator between refrigerant circulation pump, freezer sorage between refrigerant heat exchanger, freezer sorage, be specially：LNG-
The outlet of refrigerant heat exchanger connects the entrance of refrigerant side circulating pump between freezer sorage, the scars between freezer sorage
The outlet of refrigerator refrigerant side circulating pump connects the entrance of refrigerant evaporator between the freezer sorage, and the scars are cold
The outlet of refrigerant evaporator connects the entrance of refrigerant heat exchanger between LNG- freezer sorages between Tibetan；
The natural gas reheating portion is NG reheaters.
Refrigerant side circulating pump between refrigerant heat exchanger and chilled storage between described liquefied natural gas-chilled storage
It is connected.
Refrigerant side circulating pump between refrigerant heat exchanger and freezer sorage between described liquefied natural gas-freezer sorage
It is connected.
The outlet of the LNG force (forcing) pumps is divided into two-way, and refrigerant heat exchanger is low between first via connection LNG- chilled storages
The entrance of warm fluid side, the second tunnel connects the entrance of refrigerant heat exchanger cryogen side between LNG- freezer sorages, described
Refrigerant heat exchanger is low between the outlet of refrigerant heat exchanger cryogen side and LNG- freezer sorages between LNG- chilled storages
The outlet of warm fluid side converges, and the two-way cryogen, which is confluxed, is connected to the entrance of NG reheaters, and the NG reheaters go out
The power-equipment of gas is subsequently used in mouth connection.
Refrigerant heat exchanger between refrigerant heat exchanger, liquefied natural gas-freezer sorage between liquefied natural gas-chilled storage
Device low temperature cold is both from LNG cold energy.The high temperature heat source of NG reheaters comes from the used heat of seawater, air or gas turbine.
LNG respectively two independent cooling agent in parallel simultaneously, which circulate, provides cold, between maintenance chilled storage between freezer sorage
Interior cold requirement.
Cold energy of liquefied natural gas peculiar to vessel is used for freezer refrigerating method, using following steps：
A, come from the liquefied natural gas of storage tank after the supercharging of LNG booster pumps, be divided into two-way, it is natural to respectively enter liquefaction
Refrigerant heat exchanger, realization are gasified totally between refrigerant heat exchanger and liquefied natural gas-freezer sorage between gas-chilled storage
And converge again after heating up after all the way, to enter NG reheaters with gaseous state；
B, refrigerant circulation between chilled storage：Using R404a as refrigeration system refrigerant between chilled storage, go out liquid
Refrigerant side follows between the pressure-fired liquid refrigerant of refrigerant heat exchanger enters chilled storage between change natural gas-chilled storage
After the supercharging of ring pump, into refrigerant evaporator between chilled storage, to after providing cold between chilled storage, gasify and heat up,
With 2~9 DEG C of cryogenic gas state into refrigerant heat exchanger between liquefied natural gas-chilled storage, changed with liquified natural gas
Liquid is condensed into after heat, and is again introduced into refrigerant side circulating pump lifting circulating pressure between chilled storage；
C, refrigerant circulation between freezer sorage：Using R404a as refrigeration system refrigerant between freezer sorage, go out liquid
Refrigerant side follows between the pressure-fired liquid refrigerant of refrigerant heat exchanger enters freezer sorage between change natural gas-freezer sorage
After the supercharging of ring pump, into refrigerant evaporator between freezer sorage, to after providing cold between freezer sorage, gasify and heat up,
With -25~-15 DEG C of cryogenic gas state into refrigerant heat exchanger between liquefied natural gas-freezer sorage, with liquid natural
Liquid is condensed into after gas heat exchange, and is again introduced into refrigerant side circulating pump lifting circulating pressure between freezer sorage.
In step A, liquefied natural gas stores through pressure-fired, and pressure store is 0.11~0.12MPa, and liquefied natural gas goes out
The pressure of LNG booster pumps is determined by the flow resistance of LNG-NG pipelines and the pressure requirements of ship power equipment fuel inlet.
In step B, between chilled storage liquid refrigerant go out pressure between chilled storage after refrigerant side circulating pump by
The evaporating pressure of refrigerant-cycle systems refrigerant is determined with pipeline circulation resistance between chilled storage.
In step C, between freezer sorage liquid refrigerant go out pressure between freezer sorage after refrigerant side circulating pump by
The evaporating pressure of refrigerant-cycle systems refrigerant is determined with pipeline circulation resistance between freezer sorage.
Compared with prior art, the present invention has following beneficial effect：
(1) method of the invention is by two independent refrigerant circulations of parallel connection, is released using LNG in gasification
The cold energy put, respectively refrigerate and institute's chilling requirement be provided between thing refrigerator and freezer sorage, freezer now without using refrigeration machine,
Substantial amounts of initial cost and operation freight charges are saved.
(2) refrigerate between thing refrigerator and freezer sorage and the heat exchange with LNG is realized by the refrigerant circulation of itself, therefrom
Cold is obtained, refrigeration thing refrigerator can be operated together also independent operating with freezer sorage.
Brief description of the drawings
Fig. 1 is the workflow diagram of the present invention.
In figure：1-LNG storage tanks；2-LNG pumps；Refrigerant heat exchanger between 3- liquefied natural gas-chilled storage；4-NG reheating
Device；Refrigerant circulation pump between 5- chilled storages；Refrigerant evaporator between 6- chilled storages；Blower fan between 7- chilled storages；
Refrigerant heat exchanger between 8- liquefied natural gas-freezer sorage；Refrigerant circulation pump between 9- freezer sorages；10- scars are cold
Refrigerant evaporator between Tibetan；Blower fan between 11- freezer sorages；A- LNG storages and boost in pressure portion；B- cooling things are cold
Refrigerant circulation portion between Tibetan；Refrigerant circulation portion between C- freezer sorages；D-NG reheating portion；The logistics of I- first；The things of II- second
Stream, III- third―party logistics；The logistics of IV- the 4th；The logistics of V- the 5th；The logistics of VI- the 6th；The logistics of VII- the 7th；The things of VIII- the 8th
Stream；The logistics of IX- the 9th；The logistics of X- the tenth；The logistics of XI- the 11st；The logistics of XII- the 12nd；The logistics of XIII- the 13rd；XIV-
14 logistics.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.Following examples will be helpful to this area
Technical staff further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the general of this area
For logical technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made.These are belonged to
Protection scope of the present invention.
Embodiment
The system that a kind of cold energy of liquefied natural gas peculiar to vessel is used for freezer refrigerating, including LNG storage and boost in pressure
Refrigerant circulation portion C, natural gas reheating portion D between refrigerant circulation portion B, freezer sorage between portion A, chilled storage.
LNG storage includes LNG storage tank 1 and with storing up tank connected LNG force (forcing) pumps 2 with boost in pressure portion A；Cooling
Thing refrigerator refrigerant circulation portion B includes refrigerant heat exchanger between liquefied natural gas-chilled storage for being sequentially connected through pipeline
3rd, refrigerant evaporator 6 between refrigerant circulation pump 5, chilled storage between chilled storage, between liquefied natural gas-chilled storage
The entrance of refrigerant circulation pump 5, refrigerant circulation between chilled storage between the outlet connection chilled storage of refrigerant heat exchanger 3
The entrance of refrigerant evaporator 6, the outlet of refrigerant evaporator 6 between chilled storage between the outlet connection chilled storage of pump 5
Connect the entrance of refrigerant heat exchanger 3 between liquefied natural gas-chilled storage, in addition refrigerant evaporator 6 between chilled storage
It is also associated with blower fan 7 between chilled storage；Refrigerant circulation portion C includes the liquefaction day being sequentially connected through pipeline between freezer sorage
Refrigerant steams between refrigerant circulation pump 9, freezer sorage between refrigerant heat exchanger 8, freezer sorage between right gas-freezer sorage
Send out device 10, between liquefied natural gas-freezer sorage the outlet connection of refrigerant heat exchanger 8 freeze refrigerant circulation between freezer sorage
The entrance of pump 9, refrigerant evaporator 10 enters between the outlet connection freezer sorage of refrigerant circulation pump 9 between freezer sorage
Mouthful, refrigerant heat exchanger 8 between outlet connection liquefied natural gas-freezer sorage of refrigerant evaporator 10 between freezer sorage
Entrance, refrigerant evaporator 10 is also associated with blower fan 11 between freezer sorage between freezer sorage in addition；Natural gas reheating portion is
NG reheaters 4.
The method that freezer refrigerating is realized using cold energy of liquefied natural gas peculiar to vessel, its technological process is as shown in figure 1, including liquefaction
Refrigerant circulation and natural gas reheating between refrigerant circulation, freezer sorage between natural gas storing, boost in pressure, chilled storage
Four parts.
A mole composition for liquefied natural gas (LNG) peculiar to vessel is：Methane 97%, ethane 2%, propane 1%；LNG total flows are
178kg/h, the refrigerant that refrigerant circulation selects between chilled storage is R404a, flow 400.3kg/h；Between freezer sorage
The refrigerant of refrigerant circulation selection is R404a, flow 359kg/h.
Liquefied natural gas (the first stream I) from boat-carrying LNG storage tank 1 through LNG pump 2 boosting after outlet pressure be
0.12MPa, -159.2 DEG C of LNG (the second stream I I) are divided into two-way, wherein (third―party logistics III) exists with refrigerant first all the way
Exchanged heat between LNG- chilled storages in refrigerant heat exchanger 3, LNG is heated gasification extremely -2 DEG C (the 4th stream I V), LNG's
Another way (the 5th logistics V) and refrigerant are exchanged heat between LNG- freezer sorages in refrigerant heat exchanger 8, and LNG is heated
Gasification is to -26.77 DEG C (the 6th logistics VI), and the 4th stream I V and the 6th logistics VI converges, and temperature is -14.26 DEG C of (the 7th logistics
VII), the inlet temperature requirements (the 8th logistics VIII) for meeting follow-up driving force equipment are heated into NG reheaters 4.
0.81MPa, refrigerant (the 11st logistics XI) is made between LNG- chilled storages between 9 DEG C of gaseous state chilled storage
In cryogen heat exchanger 3 with -159.2 DEG C, 0.12MPa LNG (third―party logistics III) exchanges heat, and realizes condensation, temperature is -5 DEG C,
0.76MPa (the 9th stream I X), (the tenth logistics X) it is cold to enter cooling thing after refrigerant circulation pump 5 between chilled storage pressurizes
The heat absorption of refrigerant evaporator 6 is evaporated to 9 DEG C between Tibetan, and 0.81MPa gaseous refrigerant (the 11st logistics XI), is chilled storage
Between provide 20kW cold.
0.33MPa, refrigerant (the 14th logistics XIV) is in LNG- freezer sorages between -18 DEG C of gaseous state freezer sorage
Between in refrigerant heat exchanger 8 with -159.2 DEG C, 0.12MPa LNG (the 5th logistics V) exchanges heat, and realizes condensation, temperature is -32 DEG C,
0.28MPa (the 12nd logistics XII), (the 13rd logistics XIII) enters after refrigerant circulation pump 9 between freezer sorage boosts
The heat absorption of refrigerant evaporator 10 is evaporated to -18 DEG C between freezer sorage, 0.33MPa gaseous refrigerant (the 14th logistics XIV),
20kW cold is provided between freezer sorage.
Above-mentioned case study on implementation is invents preferable embodiment, but embodiments of the present invention are not by above-mentioned case study on implementation
Limitation.When between chilled storage and freezer sorage refrigerating capacity requirement change, can be by adjusting LNG third―party logistics
III and the 5th logistics V mass flow adjusts the fan-out capability of LNG colds.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. the system that a kind of cold energy of liquefied natural gas peculiar to vessel is used for freezer refrigerating, it is characterised in that it is natural that the system includes liquefaction
Gas stores and refrigerant circulation portion, natural gas be again between refrigerant circulation portion, freezer sorage between boost in pressure portion, chilled storage
Hot portion,
The LNG storage includes LNG storage tank and with storing up tank connected LNG force (forcing) pumps with boost in pressure portion；
Made between liquefied natural gas-chilled storage that refrigerant circulation portion includes being sequentially connected through pipeline between the chilled storage
Refrigerant evaporator between refrigerant circulation pump, chilled storage between cryogen heat exchanger, chilled storage；
Made between liquefied natural gas-freezer sorage that refrigerant circulation portion includes being sequentially connected through pipeline between the freezer sorage
Refrigerant evaporator between refrigerant circulation pump, freezer sorage between cryogen heat exchanger, freezer sorage；
The natural gas reheating portion is NG reheaters.
2. the system that a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 1 is used for freezer refrigerating, it is characterised in that
Refrigerant side circulating pump is connected between refrigerant heat exchanger and chilled storage between described liquefied natural gas-chilled storage.
3. the system that a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 1 is used for freezer refrigerating, it is characterised in that
Refrigerant side circulating pump is connected between refrigerant heat exchanger and freezer sorage between described liquefied natural gas-freezer sorage.
4. the system that a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 1 is used for freezer refrigerating, it is characterised in that
Described LNG storage tank is freezed with liquefied natural gas-refrigerant heat exchanger and liquefied natural gas between chilled storage-respectively through pipeline
Thing refrigerator refrigerant heat exchanger connects.
5. the system that a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 4 is used for freezer refrigerating, it is characterised in that
Refrigerant heat exchanger between refrigerant heat exchanger and liquefied natural gas-freezer sorage between described liquefied natural gas-chilled storage
Device is connected through pipeline with NG reheaters respectively again.
6. the cold energy of liquefied natural gas peculiar to vessel according to any one of claim 1-5 is used for freezer refrigerating method, its feature
It is, this method uses following steps：
A, come from the liquefied natural gas of storage tank after the supercharging of LNG booster pumps, be divided into two-way, respectively enter liquefied natural gas-cold
But refrigerant heat exchanger between thing refrigerator refrigerant heat exchanger and liquefied natural gas-freezer sorage, realization are gasified totally and risen
Wen Houzai converges after all the way, to enter NG reheaters with gaseous state；
B, refrigerant circulation between chilled storage：Using R404a as refrigeration system refrigerant between chilled storage, go out the day that liquefies
Refrigerant circulation pump increases between the pressure-fired liquid refrigerant of refrigerant heat exchanger enters chilled storage between right gas-chilled storage
After pressure, into refrigerant evaporator between chilled storage, to after providing cold between chilled storage, gasify and heat up, with 2~9
DEG C cryogenic gas state enter liquefied natural gas-chilled storage between refrigerant heat exchanger, with liquified natural gas exchange heat after it is cold
Liquid is congealed into, and is again introduced into refrigerant circulation pump lifting circulating pressure between chilled storage；
C, refrigerant circulation between freezer sorage：Using R404a as refrigeration system refrigerant between freezer sorage, go out the day that liquefies
Refrigerant circulation pump increases between the pressure-fired liquid refrigerant of refrigerant heat exchanger enters freezer sorage between right gas-freezer sorage
After pressure, into refrigerant evaporator between freezer sorage, to after providing cold between freezer sorage, gasify and heat up, with -25
~-15 DEG C of cryogenic gas state enters refrigerant heat exchanger between liquefied natural gas-freezer sorage, is exchanged heat with liquified natural gas
After be condensed into liquid, and be again introduced into refrigerant circulation pump lifting circulating pressure between freezer sorage.
7. a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 6 is used for freezer refrigerating method, it is characterised in that step
In rapid A, liquefied natural gas stores through pressure-fired, and pressure store is 0.11~0.12MPa.
8. a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 6 is used for freezer refrigerating method, it is characterised in that step
In rapid A, liquefied natural gas goes out the pressure of LNG booster pumps by the flow resistance and ship power equipment fuel inlet of LNG-NG pipelines
Pressure requirements determined.
9. a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 6 is used for freezer refrigerating method, it is characterised in that step
In rapid B, liquid refrigerant goes out pressure between chilled storage after refrigerant circulation pump by between chilled storage between chilled storage
The evaporating pressure of refrigerant-cycle systems refrigerant is determined with pipeline circulation resistance.
10. a kind of cold energy of liquefied natural gas peculiar to vessel according to claim 6 is used for freezer refrigerating method, it is characterised in that
In step C, liquid refrigerant goes out pressure between freezer sorage after refrigerant circulation pump by freezer sorage between freezer sorage
Between the evaporating pressure of refrigerant-cycle systems refrigerant determined with pipeline circulation resistance.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108151419A (en) * | 2017-12-20 | 2018-06-12 | 常州大学 | Cascade utilization LNG cold energy refrigeration storage systems |
| CN109442835A (en) * | 2018-10-17 | 2019-03-08 | 广东也节能科技有限公司 | A kind of cold energy of liquefied natural gas recycling system |
| CN109458554A (en) * | 2018-12-09 | 2019-03-12 | 大连海事大学 | A kind of LNG gasification peculiar to vessel and cold recovery exchange system and method |
| CN113530720A (en) * | 2021-07-16 | 2021-10-22 | 广东海洋大学 | Ammonia-powered container ship fuel cold energy utilization system |
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| CN203534010U (en) * | 2013-09-04 | 2014-04-09 | 武汉三江航天远方科技有限公司 | Ice making device utilizing cold energy of liquefied-natural-gas fishing boat |
| CN106314067A (en) * | 2015-07-03 | 2017-01-11 | 河南航天液压气动技术有限公司 | LNG cold energy utilization dual-temperature air-conditioning system |
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| CN108151419B (en) * | 2017-12-20 | 2020-05-26 | 常州大学 | LNG cold energy freezer system is utilized to step |
| CN109442835A (en) * | 2018-10-17 | 2019-03-08 | 广东也节能科技有限公司 | A kind of cold energy of liquefied natural gas recycling system |
| CN109458554A (en) * | 2018-12-09 | 2019-03-12 | 大连海事大学 | A kind of LNG gasification peculiar to vessel and cold recovery exchange system and method |
| CN113530720A (en) * | 2021-07-16 | 2021-10-22 | 广东海洋大学 | Ammonia-powered container ship fuel cold energy utilization system |
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