CN108592487A - A kind of cold storage refrigerating system - Google Patents
A kind of cold storage refrigerating system Download PDFInfo
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- CN108592487A CN108592487A CN201810560447.2A CN201810560447A CN108592487A CN 108592487 A CN108592487 A CN 108592487A CN 201810560447 A CN201810560447 A CN 201810560447A CN 108592487 A CN108592487 A CN 108592487A
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- Prior art keywords
- heat exchanger
- cold
- cold storage
- freezer
- refrigerating system
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- 238000005057 refrigeration Methods 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003507 refrigerant Substances 0.000 claims abstract description 13
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 7
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 7
- WFIZEGIEIOHZCP-UHFFFAOYSA-M potassium formate Chemical compound [K+].[O-]C=O WFIZEGIEIOHZCP-UHFFFAOYSA-M 0.000 claims abstract description 6
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010257 thawing Methods 0.000 claims description 17
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 12
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229940069338 potassium sorbate Drugs 0.000 claims description 4
- 235000010241 potassium sorbate Nutrition 0.000 claims description 4
- 239000004302 potassium sorbate Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 241000446313 Lamella Species 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 52
- 229910021529 ammonia Inorganic materials 0.000 description 26
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- -1 bucket Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- NGZNCESUZDJUTH-UHFFFAOYSA-N cyanic acid;hydrate Chemical compound O.OC#N NGZNCESUZDJUTH-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- 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
- F25D13/00—Stationary devices, e.g. cold-rooms
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- 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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
Abstract
The invention discloses a kind of cold storage refrigerating system, which includes the first cooling cycle system and the second cooling cycle system；First cooling cycle system includes main refrigeration unit, evaporates cold and plate heat exchanger；Second cooling cycle system includes heat exchanger between refrigerating water pump, regulation station and freezer, cold liquid filling in use in heat exchanger and its pipeline being connected between the refrigerating water pump, regulation station and freezer, realize in the plate heat exchanger refrigerant in the first refrigeration cycle and in heat exchange between cold liquid；Cold liquid is potassium formate pentaerythrite Water Dispersible Polyisocyanates water system refrigerating medium in described.
Description
Technical field
The present invention relates to low-temperature refrigeration technology field more particularly to a kind of cold storage refrigerating systems.
Background technology
Food security and cold chain construction enter high-speed development period, the backbone ring that freezer circulates as food low-temperature at present
Section, is crucial the links of entire cold chain.Liquefied ammonia and fluorine profit are mainly used in the prior art for large cold storage
It is high to freeze as refrigerant.
Liquefied ammonia refrigeration system is generally by refrigeration unit, ammonia oil separator, high-pressure reservoir, condenser, low pressure recycle liquid storage
The compositions such as bucket, oil catcher, ammonia pump and air-cooler, although liquefied ammonia refrigerating efficiency is higher, and operation cost is relatively low, this system pipes
Road is complicated, and operational administrative difficulty is big, very high to the professional standards requirement of operating personnel, simultaneously because being difficult to realize automation, is
System needs 24 hours operational administratives on duty of operating personnel.And there are oil returns in direct evaporation system, and difficult, liquefied ammonia is easy leakage
The problem of, once leaking, which occurs, in ammonia easily there is explosion accident.
Fluorine refrigeration system is high in first stage of construction input cost, and is equally used as direct evaporation system, needs to mix in freon
Lubricating oil is closed, when the vertical height of refrigeration system outdoor unit connecting copper pipe or total length increase, refrigeration system can be caused serious
Oil return it is unsmooth, so as to cause being greatly reduced for refrigerating efficiency, also result in being sharply increased for power consumption.Also, freon system
Cryogen when leaking without obvious characteristic, therefore mending-leakage and filling refrigerant on can greatly improve operation cost.
It can be seen that safe operation can be realized, have higher refrigerating efficiency and substantially by being badly in need of one kind in this field at present
The cold storage refrigerating system to cut operating costs.
Invention content
The first technical problem to be solved by the present invention is to provide a kind of indirect refrigeration system of cold liquid refrigeration in use, from
And replace liquefied ammonia refrigerant, avoid the security risk as caused by A leak of liquefied ammonia.
The technical problems to be solved by the invention further include provide one kind can have higher refrigerating efficiency, and realize it is low at
The cold storage refrigerating system of this operation.
In order to solve the above technical problem, the present invention provides a kind of cold storage refrigerating system, which includes
First cooling cycle system and the second cooling cycle system, first cooling cycle system include main refrigeration unit, evaporation it is cold
And plate heat exchanger, second cooling cycle system include heat exchanger between refrigerating water pump, regulation station and freezer, the refrigerating water pump,
Cold liquid filling in use in heat exchanger and its pipeline being connected between regulation station and freezer realizes the first system in the plate heat exchanger
Refrigerant in SAPMAC method and in heat exchange between cold liquid, cold liquid is the water dispersible polyisocyanate of potassium formate-pentaerythrite-in described
Cyanate-water system refrigerating medium.
In one embodiment, the main refrigeration unit uses semi-hermetic screw compressor, refrigerant to use R404A.
In one embodiment, the plate heat exchanger using detachable plate heat exchanger, half welded plate type heat exchanger,
Full-welding plate-type heat exchanger, lamella heat exchanger or brazing plate type heat exchanger.
In one embodiment, the regulation station includes liquid valve door adjuster and liquid flowing valve adjuster, and to each
Between freezer a corresponding valve group is both provided in liquid valve door adjuster and liquid flowing valve adjuster.
In one embodiment, in described the specific ingredient of cold liquid be by mass ratio 30%~45% potassium formate, 15%
~27% pentaerythrite, 10%~18% Water Dispersible Polyisocyanates, 0~3% propylene glycol, 0~2% dehydroactic acid
Sodium, 0~2% potassium sorbate and 15%~25% distilled water constitute.
In one embodiment, heat exchanger uses calandria heat exchanger, air-cooled heat exchanger between the freezer.
In one embodiment, the cold storage refrigerating system further includes defrosting cycle, and defrosting cycle includes thermal energy recycling
Device and defrosting pump.
In one embodiment, the cold storage refrigerating system can implement defrosting between specified freezer, while keep to other
Refrigeration between freezer.
In one embodiment, the thermal energy recoverer uses shell-and-tube heat exchanger.
<First cooling cycle system>
The first cooling cycle system of the present invention includes that main refrigeration unit, plate heat exchanger and evaporation are cold.First refrigeration
The effect of the circulatory system is that in plate heat exchanger, reality cold liquid in freezes, and cold liquid reaches desired temperature in making.This
Direct sweat cooling system can be used in the first cooling cycle system in invention, for example, using freon as the refrigeration of refrigerant
System, or it is in cost-effective, it reduces energy consumption consideration and also uses liquefied ammonia as the refrigeration system of refrigerant.Even if in the present invention
Using liquefied ammonia refrigeration unit as the first cooling cycle system, since the system pipeline length of the first refrigerator circulating system is opposite
It is short, therefore compared with using liquefied ammonia refrigeration system in entire freezer range, A leak of liquefied ammonia point is few, leakage point is also easy to arrange
Look into, thus the present invention still compared with the existing technology in liquefied ammonia refrigeration system greatly reduce safety hazards.Main refrigeration
Unit includes compressor and throttle valve, and semi-hermetic screw compressor or half envelope helical-lobe compressor can be used in the compressor.
Plate heat exchanger used in first cooling cycle system is half welded plate type heat exchanger, full-welding plate-type heat exchange
Device, lamella heat exchanger or brazing plate type heat exchanger
<Second cooling cycle system>
The present invention the second cooling cycle system between cooling pump, regulation station, freezer heat exchanger and its be connected with each other
What is flowed in pipeline is potassium formate-pentaerythrite-Water Dispersible Polyisocyanates-water system refrigerating medium.Cold liquid in described
Specific ingredient be by mass ratio 30%~45% potassium formate, 15%~27% pentaerythrite, 10%~18% can moisture
Dissipate polyisocyanates, 0~3% propylene glycol, 0~2% dehydroactic acid sodium, 0~2% potassium sorbate and 15%~25% distillation
Water is constituted.Density of cold liquid is in 1.04~1.36g/cm in this3, specific heat at 0.56~0.746cal/g. DEG C, viscosity 2.9~
15.9mPa.s (cp), thermal conductivity is in 0.21~0.47W/m.K, and boiling point is more than 150 DEG C, and freezing point is less than -60 DEG C, no flash-point.In this
It is used in cold liquid due to being not necessarily to mixed base grease, avoids the refrigeration system energy consumption as caused by oil return difficulty and increase.
According to the volume of required refrigeration freezer, with 5000m3For freezer, when library temperature demand of freezing is at -10 DEG C, second
The temperature refrigeration of middle cold water in cooling cycle system is to -15 DEG C.
There is liquid valve door adjuster and liquid flowing valve adjuster, for each freezer in the regulation station of second refrigeration cycle
Between liquid valve door adjuster and liquid flowing valve adjuster be both provided with corresponding one group of valve group.
Compared with prior art, one or more embodiments of the invention can have the following advantages that：
1. the present invention does not use a large amount of liquefied ammonia to freeze, avoids and the security risk brought is revealed by liquefied ammonia.
2. cold liquid substantially increases freezer cold-storage ability, so that refrigeration machine to freezer refrigerating in use in the present invention
After group is shut down, library temperature is gone up slow.Effectively reduce refrigeration system energy consumption.
3. in the present invention efficient automation control can be implemented to cooling cycle system, entire refrigeration system is improved again
The energy-saving effect of system.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and is obtained in claim and attached drawing.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is according to inventive refrigeration system structural schematic diagram；
Fig. 2 is according to regulation station structural schematic diagram of the present invention；
Fig. 3 is the rate of temperature fall correlation curve according to the present invention and liquefied ammonia refrigeration system；
Fig. 4 is the accumulative power consumption correlation curve according to the present invention and liquefied ammonia refrigeration system；
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing further
Ground is described in detail.
Fig. 1 is system structure diagram according to an embodiment of the invention.The present embodiment is said with reference to Fig. 1
It is bright.
The cold storage refrigerating system of the present embodiment include the first cooling cycle system and the second cooling cycle system, described first
Cooling cycle system includes main refrigeration unit 1, evaporation cold 2 and plate heat exchanger 3, and second cooling cycle system includes freezing
Heat exchanger 7 between pump 5, regulation station 6 and freezer.Main refrigeration unit 1 described in the present embodiment uses semi-hermetic screw compressor, needle
To volume in 5000m3, freezer of the reserves at 1000 tons or more, when library, temperature is set as -10 DEG C or less, need use one
The semi-hermetic screw compressor parallel connection that the semi-hermetic screw compressor and a single-machine capacity that single-machine capacity is 165KW are 83KW makes
With.Refrigerant used in first cooling cycle system is R404A, evaporative condenser use 1 operating mode heat exhaust for
The downflow type evaporative condenser that 1200KW and 1 operating mode heat exhaust is 550KW, the plate heat exchanger 3 use detachable plate
Formula heat exchanger, monolithic heat exchange area 0.3m2, maximum throughput is 150m per hour3.It is freezed in second cooling cycle system
Pump 5 uses the centrifugal pump that power drives for the variable-frequency motor of 15KW.Between freezer heat exchanger 7 according between freezer physical parameter and
Calandria heat exchanger, air-cooled heat exchanger can be used in cooling parameters demand.Fig. 2 is the structural representation of regulation station 6 in the present embodiment
Figure, the regulation station 6 includes 62 two parts of liquid valve door adjuster 61 and liquid flowing valve adjuster, for between 8 freezers
Large cold storage, liquid valve door adjuster 61 and liquid flowing valve adjuster 62 are both provided with 8 groups of valves, liquid valve door adjuster 61
And every group of valve of liquid flowing valve adjuster 62 both corresponds between a freezer.Multiple interfaces are provided in regulation station 6, wherein
For being connect with the liquid outlet of refrigerating water pump 7, second interface 602 is used to be connected with the inlet of water storage pool first interface 601, the
Three interfaces 603 are connected with heat exchanger entrance between freezer, and the 4th interface 604 is connected with heat exchanger exit between freezer, the 5th interface 605
It is connected with the delivery outlet of thermal energy recoverer 4, the 6th interface 606 pumps 8 input ports with defrosting and is connected.
Realized in the plate heat exchanger of the first cooling cycle system in the present embodiment refrigerant R404A and between cold liquid
Heat exchange, the refrigeration of the real cold liquid of centering.In used in the present embodiment the group of cold liquid be divided into mass ratio 38% potassium formate,
21% pentaerythrite, 16.9% Water Dispersible Polyisocyanates, 1.55% propylene glycol, 1.45% dehydroactic acid sodium,
1.1% potassium sorbate and 20% distilled water constitute.
The refrigerating operaton process of the present embodiment is as follows：In electricity price peak interval of time, start main refrigeration unit 1, utilizes the first system
SAPMAC method system freezes to cold liquid in plate heat exchanger 3, and when object library temperature is set as -10 DEG C, the first refrigeration is followed
Cold liquid temperature in plate heat exchanger 3 need to be down to -15 DEG C by loop system.Meanwhile regulation station 6 is closed the 5th interface and the 6th and is connect
Mouthful, first interface, second interface, third interface and the 4th interface are opened, it will be cold in plate heat exchanger 3 using refrigerating water pump 5
Liquid is delivered to heat exchanger 7 between freezer through liquid valve door adjuster 61, in cold liquid after heat exchanger between freezer 7 through liquid flowing valve
Adjuster 62 returns to plate heat exchanger 3.When cold liquid reaches -17 DEG C in plate heat exchanger 3, main refrigeration unit 1 is closed.When
When Ku Wen reaches desired value, first interface 601, second interface 602, third interface 603 and the 4th interface of regulation station 6 are closed
604。
Then, the monitoring to library temperature is kept, when heat exchanger 7 is using air-cooled heat exchanger between freezer, fan electromotor uses
Variable-frequency motor controls fan, when library temperature is higher than 2 DEG C, opens first interface 601, second interface 602, third interface
603 and the 4th interface 604, and start refrigerating water pump 5, so that cold liquid is delivered to through liquid valve door adjuster 61
Heat exchanger 7 between freezer.When temperature reaches object library temperature when library, then rotation speed of the fan is reduced, and is again switched off the first interface of regulation station 6
601, second interface 602, third interface 603, the 4th interface 604 and refrigerating water pump 5.The cold liquid in the second refrigeration cycle
When temperature is higher than -10 DEG C, it is again started up main refrigeration unit 1, cold liquid is down to -17 DEG C by.Such as in entire electricity price peak period,
Cold liquid is not higher than -10 DEG C in two refrigeration cycle, then after the arrival of next electricity price peak interval of time, the first refrigeration cycle is actively
Cold liquid in second refrigeration cycle is down to -17 DEG C by booting.
The refrigeration system of the present embodiment can carry out hot defrosting processing between freezer one by one when carrying out hot defrosting.For example,
Hot defrosting processing is carried out between the first freezer to be made, by first interface 601, second interface 602, the 5th interface 605 and the 6th interface
606 is fully open, will be adjusted to disconnect for controlling the valve group between the first freezer in third interface 603 and the 4th interface 604
Cold liquid cycle between plate heat exchanger 3, and cold liquid is input to thermal energy recoverer 4 through defrosting pump 9 in making, and is returned using thermal energy
Receive cold liquid during the shell-and-tube heat exchanger in device 4 gives the heat transfer of the refrigerant in the first cooling cycle system, cold liquid in making
Temperature reaches 25 DEG C, then cold liquid inputs heat exchanger between the first freezer by, carries out defrosting.In order to save energy consumption, defrosting operation can
Be arranged to the main refrigeration unit 1 of the first refrigeration system start to cold liquid freezes in plate heat exchanger when synchronouss progress,
Defrosting operation is carried out to avoid specially starting main refrigeration unit 1.
It is freezer volume 5000m for load3Freezer, Ku Wen is set as -10 DEG C, and setting rises to 2 DEG C when library temperature
Shi Kaiqi units freeze.Input power then need to be used when using liquefied ammonia refrigeration system according to above-mentioned load refrigeration demand
For the single machine two-stage piston compressor 3 of 95KW, input power is the condenser 1 of 35KW, and input power is the ammonia pump 3 of 3KW
Platform, for same load refrigeration demand, when using the refrigeration system of the present invention, it is the low of 165KW that need to use input power
Warm cold water Screw chiller 1, input power are the low-temperature cold water Screw chiller 1 of 83KW, and input power is that the evaporation of 13KW is cold
The defrosting that condenser 2, the refrigerating water pump that input power is 15KW 1 and input power are 5.5KW pumps 1.
Fig. 3 be the present embodiment refrigeration system by library temperature by 2 DEG C be pulled to -10 DEG C needed for run time be with traditional liquefied ammonia refrigeration
The comparison that library temperature is pulled to run time needed for -10 DEG C by system by 2 DEG C.The refrigeration system of the present invention only needs unit operation 8 hours
Library temperature can be pulled to -10 DEG C by 2 DEG C, and relative to traditional liquefied ammonia refrigeration system, then need draw library temperature by 2 DEG C within 10 hours
To -10 DEG C.
According to above-mentioned two system respectively used in equipment input power parameter, and two system institutes as shown in Figure 3
Need run time, it is known that library temperature is pulled to -10 DEG C by two systems in the daily time-of-use tariffs period by 2 DEG C, to meet in 24 hours
When freezer refrigerating demand, the power consumption using liquefied ammonia refrigeration system is daily 329KWh, and uses the refrigeration system of the present invention
Only need 289KWh.
Fig. 4 is the accumulative power consumption and liquefied ammonia refrigeration system continuous service using the refrigeration system continuous service of the present invention
Accumulative power consumption comparison.Figure 4, it is seen that the refrigeration system of the present invention follows the second refrigeration due to needing in initial operating stage
Cold liquid is cooled to -17 DEG C in loop system, so causing initial stage system power consumption higher.But due to sheet after system even running
It is relatively low to invent daily refrigeration power consumption, therefore gradual in the accumulative power consumption of continuous service refrigeration system of the invention after for a period of time
Less than liquefied ammonia refrigeration system, as shown in figure 4, in inventive refrigeration system after continuing to run until 13 days, the present invention, which is freezed, is
Power consumption total amount of the power consumption total amount of system already below traditional liquefied ammonia refrigeration system.
The above, only specific implementation case of the invention, scope of protection of the present invention is not limited thereto, any ripe
Those skilled in the art are known in technical specification of the present invention, modifications of the present invention or replacement all should be in the present invention
Protection domain within.
Claims (9)
1. a kind of cold storage refrigerating system, which includes the first cooling cycle system and the second cooling cycle system；
It is characterized in that, first cooling cycle system includes main refrigeration unit, evaporates cold and plate heat exchanger；Second refrigeration
The circulatory system includes heat exchanger between refrigerating water pump, regulation station and freezer, heat exchanger and its phase between the refrigerating water pump, regulation station and freezer
Cold liquid filling in use in pipeline even, realize in the plate heat exchanger refrigerant in the first refrigeration cycle in cold liquid it
Between heat exchange；Cold liquid is the refrigerating medium comprising potassium formate and Water Dispersible Polyisocyanates in described.
2. cold storage refrigerating system as described in claim 1, which is characterized in that the main refrigeration unit uses semiclosed screw rod pressure
Contracting machine, refrigerant use R404A.
3. cold storage refrigerating system as described in claim 1, which is characterized in that the plate heat exchanger is using detachable board-like
Heat exchanger, half welded plate type heat exchanger, full-welding plate-type heat exchanger, lamella heat exchanger or brazing plate type heat exchanger.
4. cold storage refrigerating system as described in claim 1, which is characterized in that the regulation station include liquid valve door adjuster and
Liquid flowing valve adjuster, and be both provided in liquid valve door adjuster and liquid flowing valve adjuster between each freezer corresponding
One valve group.
5. cold storage refrigerating system as described in claim 1, which is characterized in that the specific ingredient of cold liquid is by mass ratio in described
30%~45% potassium formate, 15%~27% pentaerythrite, 10%~18% Water Dispersible Polyisocyanates, 0~3%
Propylene glycol, 0~2% dehydroactic acid sodium, 0~2% potassium sorbate and 15%~25% distilled water constitute.
6. cold storage refrigerating system as described in claim 1, which is characterized in that heat exchanger is exchanged heat using calandria between the freezer
Device, air-cooled heat exchanger.
7. cold storage refrigerating system as described in claim 1, which is characterized in that the cold storage refrigerating system further includes that defrosting follows
Ring, defrosting cycle include thermal energy recoverer and defrosting pump.
8. cold storage refrigerating system as described in claim 1, which is characterized in that the cold storage refrigerating system can be between specified freezer
Implement defrosting, while keeping the refrigeration between other freezers.
9. cold storage refrigerating system as described in claim 1, which is characterized in that the thermal energy recoverer uses pipe shell type heat exchange
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560447.2A CN108592487A (en) | 2018-06-04 | 2018-06-04 | A kind of cold storage refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560447.2A CN108592487A (en) | 2018-06-04 | 2018-06-04 | A kind of cold storage refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108592487A true CN108592487A (en) | 2018-09-28 |
Family
ID=63630765
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6298673B1 (en) * | 2000-05-18 | 2001-10-09 | Carrier Corporation | Method of operating a refrigerated merchandiser system |
| CN105486005A (en) * | 2015-12-22 | 2016-04-13 | 深圳市瑞思冷链有限公司 | High-energy separation full-liquid refrigeration system and refrigeration method thereof |
| CN105505333A (en) * | 2015-12-25 | 2016-04-20 | 梁志通 | Efficient and environment-friendly coolant |
| CN205316778U (en) * | 2015-12-31 | 2016-06-15 | 北京中冷创新科技有限公司 | Cold storage refrigeration system |
| CN206420178U (en) * | 2017-01-17 | 2017-08-18 | 朝阳光达化工有限公司 | A kind of economical cold storage refrigeration system of energy-saving safe |
-
2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6298673B1 (en) * | 2000-05-18 | 2001-10-09 | Carrier Corporation | Method of operating a refrigerated merchandiser system |
| CN1340686A (en) * | 2000-08-31 | 2002-03-20 | 开利公司 | Operation method of commercial refrigeration system |
| CN105486005A (en) * | 2015-12-22 | 2016-04-13 | 深圳市瑞思冷链有限公司 | High-energy separation full-liquid refrigeration system and refrigeration method thereof |
| CN105505333A (en) * | 2015-12-25 | 2016-04-20 | 梁志通 | Efficient and environment-friendly coolant |
| CN205316778U (en) * | 2015-12-31 | 2016-06-15 | 北京中冷创新科技有限公司 | Cold storage refrigeration system |
| CN206420178U (en) * | 2017-01-17 | 2017-08-18 | 朝阳光达化工有限公司 | A kind of economical cold storage refrigeration system of energy-saving safe |
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Application publication date: 20180928 |