CN109028404A - A kind of mixture of ice and water chilling air conditioning system and its control method - Google Patents
A kind of mixture of ice and water chilling air conditioning system and its control method Download PDFInfo
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- CN109028404A CN109028404A CN201810892777.1A CN201810892777A CN109028404A CN 109028404 A CN109028404 A CN 109028404A CN 201810892777 A CN201810892777 A CN 201810892777A CN 109028404 A CN109028404 A CN 109028404A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 185
- 238000004378 air conditioning Methods 0.000 title claims abstract description 36
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 239000003507 refrigerant Substances 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000008014 freezing Effects 0.000 claims abstract description 12
- 238000007710 freezing Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims description 28
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 18
- 239000000498 cooling water Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of mixture of ice and water chilling air conditioning system, structure includes compressor, reversing arrangement, cooling device, evaporator, cold accumulator, first throttle mechanism, second throttle body, water aspirator, water at low temperature water circulating pump, the first regulating valve, water distributor and end freezing water circulation system.Water at low temperature race way is established around evaporator by low temperature water circulation system when this system ice-reserving, so that refrigerant and water carry out heat convection ice making, while water at low temperature race way can also accelerate evaporator ice making speed.In addition, ice sheet is detached evaporator in time during ice-reserving, the heat transfer intensity of the refrigerant and water that make refrigeration unit maintains optimum state the present invention also provides control method, to improve heat exchange efficiency, energy consumption is reduced.Due to eliminating the heat exchange link and multiple groups water circulating pump of intermediate medium and cool storage medium, equipment and cost of investment involved in system can also be greatly decreased.
Description
Technical field
The present invention relates to cool storage air conditioning technology field more particularly to a kind of mixture of ice and water chilling air conditioning system and its controls
Method.
Background technique
Ice storage central air-conditioning system is that electric energy peak, paddy are unbalanced round the clock in a kind of ideal " peak load shifting " balance city
Effective measures.It is cold in the refrigeration system ice making storage of night dip rate period, ice storage central air-conditioning, although ice making energy consumption is than system
The energy consumption of chilled water is high, but due to a quarter of low ebb electricity price usually only peak electricity tariff on daytime, can still save part sky
Tune expense.In the peak of power consumption period on daytime, air-conditioning cold flow is released cold from the ice-out that night is stored up, and air-conditioning system only runs cooling capacity
Transportation water pump, air-conditioning system power consumption is low, mitigates pressure of powering city daytime.
The ice making heat transfer process of ice storage forming by a variety of working medias and multiple intermediate heat exchange loops at present.At night
Between ice-reserving when, main cooling supply process will pass through two heat-exchanging loops, i.e. the refrigerant of refrigeration unit and intermediate medium heat exchange is returned
Water at low temperature heat exchange loop inside road and intermediate medium and Ice Storage Tank.Particularly, conventional intermediate medium is that ethylene glycol is water-soluble
Liquid is that the refrigerant and glycol water in low temperature refrigerator group evaporator exchange heat first, glycol water temperature is dropped
To -10 DEG C hereinafter, then low-temperature glycol aqueous solution by delivery pump be transported in the coil pipe inside Ice Storage Tank with inside Ice Storage Tank
Water at low temperature heat exchange, by water at low temperature gradually glaciation.In addition, with ice sheet progressive additive, disk outside the coil pipe inside Ice Storage Tank
The heat transfer intensity of glycol water and ice sheet in pipe is more and more low, and refrigeration unit energy consumption is higher and higher therewith (it is public to obtain 1
The energy consumption of jin ice is increased as the thickness of ice sheet increases).In ice-melt on daytime, main cooling supply process will also be changed by two
Ice inside hot loop, i.e. glycol water and Ice Storage Tank carries out heat exchange loop and low-temperature glycol aqueous solution and air-conditioning end
The chilled water at end carries out heat exchange loop.Such as Chinese patent CN101082434A discloses a kind of self circulation type cold storage air-conditioning system
System, which can save low temperature refrigerating medium (such as salt water or ethylene glycol solution) in cold-storage, but when its cold-storage mainly for
Cold process still need pass through above-mentioned two heat-exchanging loop, and in process of cool there is no by frozen outside heat exchange coil
Ice sheet removing, and cool storage medium is constantly in stationary state, and heat exchange form is heat transfer, thus with the thickness of ice sheet
Degree increases, and the energy consumption of the system can increase therewith.In another example Chinese patent CN104279667A discloses a kind of phase-changing energy-storing sky
Adjusting system, main cooling supply process of the system in cold-storage, which still needs, passes through above-mentioned two heat-exchanging loop, and in-between medium is
Chilled water is that the refrigerant and chilled water in low temperature refrigerator group evaporator exchange heat first, chilled water is become low temperature chilled water,
Then low temperature chilled water is transported to inside Ice Storage Tank by delivery pump and is exchanged heat with the solid-liquid phase change material inside Ice Storage Tank, makes solid liquid phase
Become material gradually solidify, but the system will solidify in process of cool phase-change material disengaging two media heat exchange
Surface, and the solid-liquid phase change material is constantly in stationary state, and heat exchange form is heat transfer, thus with solidification thickness
The increase of degree, the energy consumption of the system can also increase therewith.
In addition to this, since heat exchange loop is more, recirculated water pump group, pipeline, valve part are also more, therefore ice storage center
Air-conditioning system the space occupied is big, and initial investment is at high cost.
In conclusion ice-chilling air conditioning system exchanges heat there are ice-reserving and deicing processes at present, link is more, comprehensive thermal resistance is big, energy
Consume higher and at high cost initial investment disadvantage.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of mixture of ice and water chilling air conditioning system and its control
Method processed, the system eliminate the heat exchange link and multiple groups water circulating pump of intermediate medium and cool storage medium, system institute are greatly decreased
The equipment and cost of investment being related to by convective heat transfer, in time deice to reduce heat exchange thermal resistance, improve heat exchange efficiency, reduce
The energy consumption of system.
The technical solution adopted by the present invention to solve the technical problems are as follows:
A kind of mixture of ice and water chilling air conditioning system, including ice making cold supply system, low temperature water circulation system and end freezing
Water circulation system；Making ice cold supply system includes compressor, reversing arrangement, cooling device, cold accumulator, evaporator, first throttle machine
Structure and second throttle body, the reversing arrangement air entry, described with the exhaust outlet of the compressor, the compressor respectively
The refrigerant inlet of cooling device is connected with the outlet of the evaporator, and the refrigerant exit of the cooling device is respectively with described first
The import of throttle mechanism is connected with the outlet of the second throttle body, the import of the evaporator respectively with the first throttle
The outlet of mechanism is connected with the import of second throttle body, and cool storage medium, the evaporator submergence are housed inside the cold accumulator
In the cool storage medium；Low temperature water circulation system include water aspirator, water at low temperature water circulating pump, the first regulating valve, water distributor and
First connecting tube, the water aspirator and the water distributor are mounted in the cold accumulator, and water aspirator and water distributor are located at
Above and below the evaporator, first connecting tube is arranged outside the cold accumulator, first connecting tube one end
It exports and connects with the water aspirator, the other end is connect with the water distributor import, the water at low temperature water circulating pump and described first
Regulating valve is arranged in first connecting tube；The low temperature water circulation system is around the evaporator and its heat exchange element
Between establish a water at low temperature race way, the water (flow) direction in the water at low temperature race way is consistent, flow speed stability and streamflow regime
It for laminar flow regime or is laminar flow and turbulent critical state；End freezing water circulation system includes end, chilled water water circulating pump, the
One triple valve and converging three-way valve, the end inlet and outlet connection pipeline on be successively arranged the chilled water recirculated water
Pump, the first triple valve and converging three-way valve, the outlet of the chilled water water circulating pump are connect with the import of first triple valve,
The first outlet of first triple valve is connect with the import of the cold accumulator, the second outlet of first triple valve with it is described
First import of converging three-way valve connects, and the second import of the converging three-way valve is connect with the outlet of the cold accumulator.
As an improvement of the above technical solution, the input end of the first throttle mechanism is additionally provided with the first shut-off valve, institute
The input end for stating second throttle body is additionally provided with the second shut-off valve, and first shut-off valve and the second shut-off valve are normally closed type
Solenoid valve.
As an improvement of the above technical solution, the reversing arrangement is four-way valve.
As an improvement of the above technical solution, the cooling device is air cooled condenser or water cooled condenser or evaporation
Air-cooled condenser.
As an improvement of the above technical solution, the evaporator is plate heat interchanger.
As an improvement of the above technical solution, the first throttle mechanism and second throttle body be electric expansion valve or
Heating power expansion valve.
As an improvement of the above technical solution, the cool storage medium is water.
As an improvement of the above technical solution, first triple valve is proportional integration diversion three-way valve.
As an improvement of the above technical solution, the compressor is centrifugal compressor or screw compressor or vortex
Compressor.
A kind of mixture of ice and water chilling air conditioning system control method, for controlling a kind of above-mentioned mixture of ice and water cold accumulation air-conditioner
System, which comprises when the evaporator heat exchange surface ice layer thickness is less than 3mm, system executes ice-make mode, described
The high pressure, high temperature refrigerant gas that the compressor is discharged reversing arrangement is sent into cooling device；When the evaporator heat exchange table
When face ice layer thickness reaches 3~5mm, system execution deices mode, and the reversing arrangement switches the suction and discharge side of the compressor
To the high pressure, high temperature refrigerant gas that the compressor is discharged is sent into evaporator, so that being close to evaporator heat exchange surface
Ice partial melting falls off.
The beneficial effects of the present invention are as follows:
Water at low temperature race way is established around evaporator by low temperature water circulation system when this system ice-reserving, so that refrigerant
Heat convection ice making is carried out with water, while water at low temperature race way can also accelerate evaporator ice making speed.In addition, the present invention also provides
Control method ice sheet is detached evaporator in time during ice-reserving makes the heat exchange of the refrigerant and water of refrigeration unit
Intensity maintains optimum state, to improve heat exchange efficiency, reduces energy consumption.Due to eliminating changing for intermediate medium and cool storage medium
Hot link and multiple groups water circulating pump, can also be greatly decreased equipment and cost of investment involved in system.
Detailed description of the invention
With reference to the accompanying drawing and specific embodiment the invention will be further described, in which:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the ice-make mode structural schematic diagram of the embodiment of the present invention；
Fig. 3 is that the embodiment of the present invention deices mode configuration schematic diagram；
Fig. 4 is that cold mode configuration schematic diagram is released in the independent ice-melt of the embodiment of the present invention；
Fig. 5 is the non-ice-reserving cooling mode structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of mixture of ice and water chilling air conditioning system of the invention, including ice making cold supply system 1, water at low temperature are followed
Loop system 2 and end freeze water circulation system 3.
Making ice cold supply system 1 includes compressor 11, reversing arrangement 12, cooling device 13, cold accumulator 14, evaporator 15, the
One throttle mechanism 16 and second throttle body 17, the reversing arrangement 12 respectively with the exhaust outlet of the compressor 11, the pressure
The air entry of contracting machine 11, the cooling device 13 refrigerant inlet connected with the outlet of the evaporator 15, the cooling device
13 refrigerant exit is connect with the import of the first throttle mechanism 16 and the outlet of the second throttle body 17 respectively, described
The import of evaporator 15 is connect with the outlet of the first throttle mechanism 16 and the import of second throttle body 17 respectively, the storage
Cool storage medium is housed, the evaporator 15 is immersed in the cool storage medium inside cooler 14.
Low temperature water circulation system 2 includes water aspirator 21, water at low temperature water circulating pump 22, the first regulating valve 23,24 and of water distributor
First connecting tube 25, the water aspirator 21 and the water distributor 24 are mounted in the cold accumulator 14, and water aspirator 21 and water distribution
Device 24 is located above and below the evaporator 15, and first connecting tube 25 is arranged outside the cold accumulator 14,
Described first connecting tube, 25 one end and the water aspirator 21 outlet connect, and the other end is connect with 24 import of water distributor, described
Water at low temperature water circulating pump 22 and first regulating valve 23 are arranged in first connecting tube 25.
Low temperature water circulation system 2 establishes a water at low temperature circulation around the evaporator 15 and its between heat exchange element
Area 4, water (flow) direction in the water at low temperature race way 4 is consistent, flow speed stability and streamflow regime be laminar flow regime or be laminar flow with
The critical state of turbulent flow.
It includes end 31, chilled water water circulating pump 32, the first triple valve 33 and interflow threeway that end, which freezes water circulation system 3,
Valve 34, the end 31 inlet and outlet connection pipeline on be successively arranged the chilled water water circulating pump 32, the first threeway
The outlet of valve 33 and converging three-way valve 34, the chilled water water circulating pump 32 is connect with the import of first triple valve 33, institute
The first outlet for stating the first triple valve 33 is connect with the import of the cold accumulator 14, the second outlet of first triple valve 33 with
First import of the converging three-way valve 34 connects, the outlet of the second import of the converging three-way valve 34 and the cold accumulator 14
Connection.
System inner refrigerant migrates when to prevent compressor 11 from shutting down, in the present embodiment, the first throttle mechanism 16
Input end be additionally provided with the first shut-off valve 18, the input end of the second throttle body 17 is additionally provided with the second shut-off valve 19,
First shut-off valve 18 and the second shut-off valve 19 are normally closed solenoid valve, and the first shut-off valve 18 and the second shut-off valve 19 are being pressed
Contracting machine 11 is in closed state when shutting down.
As shown in Fig. 2, the reversing arrangement 12 is four-way valve 120, the four-way valve to keep commutating structure simple to operation
120 include the first import 121, first outlet 122, second outlet 123 and third outlet 124.
To adapt to different climatic provinces, meet the easy-to-use of locality, in the present embodiment, the cooling device 13 is
Air cooled condenser or water cooled condenser or evaporation air-cooled condenser.
For convenient for making ice, deicing and when daily maintenance clears up scale, in the present embodiment, the evaporator 15 is chip
Heat exchanger, the plate heat interchanger are connected in parallel by several plate heat exchanger fins, are equipped with one inside every plate heat exchanger fin
A import and one outlet, be additionally provided between the inlet and outlet serpentine refrigerant channel for refrigerant circulation, outside
Portion is cool storage medium channel.
It is in the present embodiment, described to improve the stability of refrigeration system convenient for being precisely controlled the compressor air suction degree of superheat
First throttle mechanism 16 and second throttle body 17 are electric expansion valve or heating power expansion valve.
For the cool storage medium convenient for obtaining and can be replenished in time in cold accumulator 14, in the present embodiment, the cool storage medium
For water.
To make it within the set range convenient for adjusting the chilled water temperature for entering end 31, in the present embodiment, described the
One triple valve 33 is proportional integration diversion three-way valve.
To adapt to different application, different environmental working conditions and different refrigeration requirements, in the present embodiment, institute
Stating compressor 11 is centrifugal compressor or screw compressor or scroll compressor.
The present invention also provides a kind of mixture of ice and water chilling air conditioning system control methods, mixed for controlling a kind of above-mentioned ice water
Close object chilling air conditioning system, which comprises when the 15 heat exchange surface ice layer thickness of evaporator is less than 3mm, system is held
Row ice-make mode, the high pressure, high temperature refrigerant gas that the compressor 11 is discharged the reversing arrangement 12 are sent into cooling device 13
In；When the 15 heat exchange surface ice layer thickness of evaporator reaches 3~5mm, system execution deices mode, the reversing arrangement 12
The suction and discharge direction for switching the compressor 11, the high pressure, high temperature refrigerant gas that the compressor 11 is discharged are sent into evaporator
In 15, so that the ice partial melting for being close to 15 heat exchange surface of evaporator falls off.
Specific works mode of the invention has: cold mode and non-ice-reserving cooling supply are released in independent cold storage of ice making mode, independent ice-melt
Mode.
As shown in Fig. 2, in the present embodiment, compressor 11 is screw compressor, first throttle mechanism 16 and the second section
Stream mechanism 17 is electric expansion valve, and cooling device 13 is water cooled condenser, and the water cooled condenser includes condenser 131
With cooling tower 132.
As shown in Fig. 2, individually ice making stores for air-conditioning system operation in night dip electricity price and building does not need the cooling supply period
Cold mode, there are two merotypes for the mode, and one is ice-make mode, the other is deicing mode, which mode no matter executed all
Need to close chilled water water circulating pump 32, only operation ice making cold supply system 1 and low temperature water circulation system 2.When executing ice-make mode,
The water at low temperature water circulating pump 22 of low temperature water circulation system 2 drives the water inside cold accumulator between water aspirator 21 and water distributor 24 continuous
Circulate, and by the first regulating valve 23 control water flow velocity stablize in 1.1~1.2m/s, thus around evaporator 15 and
A stable water at low temperature race way 4 is established between its heat exchange element, the water (flow) direction in water at low temperature race way 4 is consistent, flows
Fast stabilization and streamflow regime are laminar flow regime or are laminar flow and turbulent critical state, and the water in water at low temperature race way 4 is continuous
Circulation is skimmed over outside 15 heat exchange element of evaporator.At the same time, make ice the first import 121 of the four-way valve 120 of cold supply system 1 with
First outlet 122 is connected to, and the second outlet 123 of four-way valve 120 is connected to third outlet 124, and the high pressure that compressor 11 is discharged is high
Warm gaseous refrigerant is entered after condenser 131 and low-temperature cooling water heat exchange by four-way valve 120 becomes high pressure low temperature liquid system
Cryogen, the high pressure low temperature liquid refrigerant come out from condenser 131 become low-pressure low-temperature gas by the throttling of first throttle mechanism 16
Enter the water skimmed over outside 15 heat exchange element of evaporator in evaporator 15 with constantly circulation after liquid two phase refrigerant and carries out convection current
Heat exchange, the heat that gas-liquid two-phase cold-producing medium absorbs water all flashes to low-pressure low-temperature gaseous refrigerant, and passes through 120 weight of four-way valve
It newly returns in compressor 11 and is compressed, to complete a refrigeration cycle, while the water on 15 surface of evaporator then can heat release
Flake ice is frozen into be attached on 15 heat exchange surface of evaporator, after several refrigeration cycle, ice layer thickness can be gradually increased,
When detecting that ice layer thickness is less than 3mm by ice layer thickness sensor, refrigeration cycle can constantly be run to be continuously increased ice sheet thickness
Degree.The ice layer thickness sensor is arranged on 15 heat exchange surface of evaporator, is frozen in 15 heat exchange surface of evaporator for detecting
On icing degree, and issue ice layer thickness signal.
At the same time, the low-temperature cooling water in condenser 131 and the heat exchange of high pressure-temperature gaseous refrigerant become High-temperature cooling
Enter cooling tower 132 after water.In cooling tower 132, high-temperature cooling water becomes sub-cooled after being exchanged heat with atmospheric environment
Water reenters condenser 131, to complete a cooling water circulation.
During ice making, the water at low temperature race way 4 established by low temperature water circulation system 2 makes around evaporator 15
And its water temperature between heat exchange element is lower than the water temperature except water at low temperature race way 4, so as to accelerate the ice making speed in the region
Degree, improves the efficiency of refrigeration unit.
As shown in figure 3, detecting that 15 heat exchange surface ice layer thickness of evaporator reaches 3~5mm by ice layer thickness sensor
When, system execution deices mode.When system deices, the first import 121 for making ice the four-way valve 120 of cold supply system 1 goes out with third
Mouth 124 is connected to, and the second outlet 123 of four-way valve 120 is connected to first outlet 122, the high pressure-temperature gaseous state that compressor 11 is discharged
Refrigerant enters rapid heating evaporation device heat exchange surface in evaporator 15 by four-way valve 120, exchanges heat so that being close to evaporator 15
The ice partial melting on surface simultaneously skims under the water flow outside 15 heat exchange element of evaporator drives in continuous circulation from evaporator heat exchange
It is detached from surface, the flake ice detached floats up to the region above evaporator 15 under the action of buoyancy.At the same time, enter
High pressure-temperature gaseous refrigerant in evaporator 15 is cooled to high pressure low temperature liquid refrigerant, the height come out from evaporator 15
It forces down warm liquid refrigerant and enters condenser later as low-pressure low-temperature gas-liquid two-phase cold-producing medium by second throttle body throttling
It exchanges heat in 131 with high-temperature cooling water, the heat that gas-liquid two-phase cold-producing medium absorbs cooling water all flashes to low-pressure low-temperature gas
State refrigerant, and come back in compressor 11 and compressed by four-way valve 120, to complete a refrigeration cycle.
At the same time, the high-temperature cooling water in condenser 131 and the heat exchange of low-pressure low-temperature gas-liquid two-phase cold-producing medium become low temperature
Enter cooling tower 132 after cooling water.In cooling tower 132, low-temperature cooling water becomes high temperature after being exchanged heat with atmospheric environment
Cooling water reenters condenser 131, to complete a cooling water circulation.
During deicing, the high pressure, high temperature refrigerant for being discharged into evaporator that commutated by four-way valve 120 has flow velocity fast
The characteristics of, evaporator is trapped in when also can be by system ice-making process while the ice of quick 15 heat exchange surface of heating evaporation device
Compressor and freeze oil inside 15 is brought back to inside compressor 11, not only enables the effective oil return of compressor 11, additionally it is possible to clear up
The greasy dirt of 15 internal refrigerant pass inner wall of evaporator, the heat transfer intensity of the refrigerant and water that make refrigeration unit maintain best shape
State reduces energy consumption to improve heat exchange efficiency.
The ice layer thickness on 15 heat exchange surface of finisher deiced is less than 3mm, and system can re-execute ice-make mode again.
Above-mentioned ice making and to deice process be the process successively recycled, by several make ice-deice cycle period it
Afterwards, a large amount of flake ices will be stored inside cold accumulator.
As shown in figure 4, daytime peak electricity tariff and building need the cooling supply period, air-conditioning system run independent ice-melt release it is cold
Mode, the mode need to open chilled water water circulating pump 32, only run end and freeze water circulation system 3.At this time in cold accumulator 14
Portion's cool storage medium is mixture of ice and water, and temperature is not only low but also stablizes, and the high temperature chilled water come out from end 31 passes through cold
Freeze after water water circulating pump 32 enters the first triple valve 33 and be divided into two parts, a part of high temperature chilled water from the first triple valve 33 the
One outlet enters 14 inside of cold accumulator and exchanges heat with flake ice, and this direct heat exchange form is changed due to not having heat exchange thermal resistance
Calorific intensity is big, and released cold quantity speed is high-efficient fastly, therefore this part enters the high temperature chilled water of cold accumulator 14 and cools down become rapidly
Low temperature chilled water, another part high temperature chilled water from the second outlet of the first triple valve 33 come out with from cold accumulator 14 come out it is low
Warm chilled water is mixed into the mixed freezing water of cooling temperature needed for air-conditioning system in converging three-way valve 34, later the mixed freezing water
It exchanges heat into end 31 with hot-air, mixed freezing water absorbs after hot-air heat becomes high temperature chilled water passes through first again
Triple valve 33 is diverted into cold accumulator 14 and cools, to complete a chilled water circulation, hot-air is then put to mixed freezing water
It is continuously sent to Indoor environment in a steady stream after heat is cooling, can reach Indoor environment after several chilled water cycle periods
The purpose of constant temperature.In the present embodiment, the first triple valve 33 is proportional integration diversion three-way valve, can be according to high temperature chilled water
Adjust the high temperature chilled-water flow into cold accumulator 14 with the mixed mixed freezing coolant-temperature gage of low temperature chilled water, with realize by
Mixed freezing coolant-temperature gage controls the purpose within the scope of set temperature.
With further reference to Fig. 5, daytime peak electricity tariff and 14 ice-reserving of cold accumulator be unable to satisfy it is cold needed for building air-conditioning
The period is measured, the ice-reserving in cold accumulator 14 melts completely at this time, and air-conditioning system runs non-ice-reserving cooling mode, which needs
Ice making cold supply system 1, low temperature water circulation system 2 and end freezing water circulation system 3 are run simultaneously.When above-mentioned mixed freezing water temperature
When degree is greater than the set value, non-ice-reserving cooling mode starting, due to making ice the 15 heat exchange surface ice layer thickness of evaporator of cold supply system 1
Less than 3mm, so system executes ice-make mode；The water temperature for the water at low temperature race way 4 established by low temperature water circulation system 2 is compared with the area
Overseas water temperature is low, therefore fast by the speed that ice is made in water, so that system cooling efficiency is improved；Pass through the first triple valve 33
First outlet be diverted into cold accumulator 14 high temperature chilled water be laminar in cold accumulator 14 state flowing, water at low temperature race way
Interior low temperature chilled water squeezes out cold accumulator 14, and high temperature chilled water can be then cooled in water at low temperature race way 4 by evaporator 15
Low temperature chilled water；The high temperature that the second outlet of the low temperature chilled water and the first triple valve 33 that come out from cold accumulator 14 distributes freezes
Enter in end 31 after water mixing with to building cooling supply.
The above, only better embodiment of the invention, but the present invention is not limited to above-described embodiments, as long as
The technical effect of the present invention is achieved by any identical or similar means for it, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of mixture of ice and water chilling air conditioning system, it is characterised in that: including making ice cold supply system (1), water at low temperature cyclic system
It unites (2) and end freezes water circulation system (3)；
The ice making cold supply system (1) includes compressor (11), reversing arrangement (12), cooling device (13), cold accumulator (14), steams
Send out device (15), first throttle mechanism (16) and second throttle body (17), the reversing arrangement (12) respectively with the compressor
(11) the air entry of exhaust outlet, the compressor (11), the refrigerant inlet of the cooling device (13) and the evaporator
(15) outlet connection, the refrigerant exit of the cooling device (13) respectively with the import of the first throttle mechanism (16) and institute
State second throttle body (17) outlet connection, the import of the evaporator (15) respectively with the first throttle mechanism (16)
Outlet is connected with the import of second throttle body (17), and cool storage medium, the evaporator are housed inside the cold accumulator (14)
(15) it is immersed in the cool storage medium；
The low temperature water circulation system (2) includes water aspirator (21), water at low temperature water circulating pump (22), the first regulating valve (23), cloth
Hydrophone (24) and the first connecting tube (25), the water aspirator (21) and the water distributor (24) are mounted on the cold accumulator (14)
It is interior, and water aspirator (21) and water distributor (24) are located above and below the evaporator (15), first connecting tube
(25) setting is external in the cold accumulator (14), and described first connecting tube (25) one end and the water aspirator (21) outlet connect,
The other end is connect with the water distributor (24) import, the water at low temperature water circulating pump (22) and first regulating valve (23) setting
On first connecting tube (25)；
The low temperature water circulation system (2) establishes a water at low temperature around the evaporator (15) and its between heat exchange element
Race way (4), water (flow) direction in the water at low temperature race way is consistent, flow speed stability and streamflow regime are laminar flow regime or are layer
The critical state of stream and turbulent flow；
End freezing water circulation system (3) include end (31), chilled water water circulating pump (32), the first triple valve (33) and
Converging three-way valve (34), the end (31) inlet and outlet connection pipeline on be successively arranged the chilled water water circulating pump
(32), the first triple valve (33) and converging three-way valve (34), the outlet and the described 1st of the chilled water water circulating pump (32)
The import of port valve (33) connects, and the first outlet of first triple valve (33) is connect with the import of the cold accumulator (14), institute
The second outlet for stating the first triple valve (33) is connect with the first import of the converging three-way valve (34), the converging three-way valve
(34) the second import is connect with the outlet of the cold accumulator (14).
2. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the first throttle machine
The input end of structure (16) is additionally provided with the first shut-off valve (18), and the input end of the second throttle body (17) is additionally provided with second
Shut-off valve (19), first shut-off valve (18) and the second shut-off valve (19) are normally closed solenoid valve.
3. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the reversing arrangement
It (12) is four-way valve.
4. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the cooling device
It (13) is air cooled condenser or water cooled condenser or evaporation air-cooled condenser.
5. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the evaporator (15)
For plate heat interchanger.
6. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the first throttle machine
Structure (16) and second throttle body (17) are electric expansion valve or heating power expansion valve.
7. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the cool storage medium is
Water.
8. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: first triple valve
It (33) is proportional integration diversion three-way valve.
9. a kind of mixture of ice and water chilling air conditioning system according to claim 1, it is characterised in that: the compressor (11)
For centrifugal compressor or screw compressor or scroll compressor.
10. a kind of mixture of ice and water chilling air conditioning system control method, it is characterised in that: any for controlling claim 1~9
One a kind of mixture of ice and water chilling air conditioning system, which comprises when the evaporator (15) heat exchange surface ice sheet
When thickness is less than 3mm, system executes ice-make mode, the high temperature and pressure that the compressor (11) is discharged the reversing arrangement (12)
Refrigerant gas is sent into cooling device (13)；When the evaporator (15) heat exchange surface ice layer thickness reaches 3~5mm, it is
System executes the mode that deices, and the reversing arrangement (12) switches the suction and discharge direction of the compressor (11), by the compressor
(11) the high-temperature high-pressure refrigerant gas being discharged is sent into evaporator (15), so that being close to the ice portion of evaporator (15) heat exchange surface
Divide to melt and fall off.
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| CN201810892777.1A CN109028404B (en) | 2018-08-07 | 2018-08-07 | Ice water mixture cold accumulation air conditioning system and control method thereof |
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| CN201810892777.1A CN109028404B (en) | 2018-08-07 | 2018-08-07 | Ice water mixture cold accumulation air conditioning system and control method thereof |
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| CN109945371A (en) * | 2019-04-11 | 2019-06-28 | 中国科学院广州能源研究所 | A kind of superposition type Supercool method ice storage system |
| CN110388710A (en) * | 2019-08-15 | 2019-10-29 | 上海雪森林制冷设备有限公司 | Immersed plate type ice storage system |
| CN112113298A (en) * | 2020-09-27 | 2020-12-22 | 广州大学 | Ice cold storage system |
| CN112728669A (en) * | 2020-12-29 | 2021-04-30 | 深圳市前海能源科技发展有限公司 | Cold storage device, method and regional cold supply system |
| CN113710076A (en) * | 2021-09-23 | 2021-11-26 | 特变电工西安柔性输配电有限公司 | Flexible direct current transmission converter valve cooling system |
| CN114484959A (en) * | 2022-02-21 | 2022-05-13 | 邹杰 | Ice making system |
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| CN114484959A (en) * | 2022-02-21 | 2022-05-13 | 邹杰 | Ice making system |
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