CN109294523A - A kind of cold accumulation air-conditioner - Google Patents
A kind of cold accumulation air-conditioner Download PDFInfo
- Publication number
- CN109294523A CN109294523A CN201811213280.9A CN201811213280A CN109294523A CN 109294523 A CN109294523 A CN 109294523A CN 201811213280 A CN201811213280 A CN 201811213280A CN 109294523 A CN109294523 A CN 109294523A
- Authority
- CN
- China
- Prior art keywords
- phase
- conditioner
- change material
- air
- cold accumulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
-
- 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
- F24F5/0021—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 using phase change material [PCM] for storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The present invention relates to air-conditioning technical fields, more particularly to a kind of cold accumulation air-conditioner, cold accumulation air-conditioner, including refrigeration unit, heat exchanger plates, phase-change material cold-storage device, user's air-conditioning, refrigerating water pump and water pump, the phase-change material cold-storage device carries air conditioner cold accumulation phase-change material comprising hydrated salt, hydroxyl carbon nano tube and thin porous layer graphene.It makes full use of heating conduction excellent possessed by graphene itself, self-lubrication and the high characteristic combined, and graphene is designed to cellular, to solve the problem of phase separation of phase-changing energy storage material, further improves the heat storage and cold accumulation performance of phase-change material.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to a kind of cold accumulation air-conditioner.
Background technique
It is energy-saving to realize, it mitigates power supply shortage and electricity supply and demand is unbalance, China takes a series of regulation hands
Section, such as carry out Peak-valley TOU power price system energetically.Cold accumulation air-conditioner can realize " peak load shifting " of electric power, effectively reduce power grid and hold
Amount is one of the energy conservation measure that country widelys popularize.
At present, Cold Storage Material for Air Conditioning mainly has water, ice and 3 kinds of phase-change material.Water cold storage utilizes water between 4~7 DEG C
Sensible heat carries out cold-storage, and conventional refrigeration unit can be used, and realizes the double duty of cold-storage and accumulation of heat.To the research master of water cold storage
Concentrate on dynamic analog and analysis of running economical efficiency.There are many disadvantages for water cold storage: storage density of cold is low, and reservoir volume is huge
Greatly；The water of different temperatures is easy mixing in cold-storage groove, influences the storage cooling capacity in cold-storage groove.Ice storage is that one kind makes full use of phase
The cold-storage mode for becoming latent heat, has many advantages, such as that cheap, performance is stable, latent heat is big, at home using more in central air-conditioning.
But ice storage phase transition temperature is low, keeps evaporating temperature of the refrigeration machine when ice making fills cold 8~10 DEG C lower than conventional non-cold accumulation system, this
The adoptable refrigeration machine type of chilling air conditioning system is not only limited, and refrigeration machine COP is caused to decline, makes the operation of refrigeration machine
Efficiency reduces by 30%~40%.
The shortcomings that air-conditioning system that phase-change material carries out phase change cold-storage can overcome above-mentioned water and ice-storage system has big
Energy storage density, be 5~14 times of equal volume sensible heat stored substance, can directly adopt conventional refrigerant unit carry out cold-storage, mention
The evaporating temperature and COP value of high refrigeration unit, so as to improve the capacity usage ratio of system.
Therefore it develops suitable phase transition temperature phase-change material and receives the extensive concern of people, become the heat of research in recent years
Point.
Phase-change material can be divided into inorganic phase-changing material and organic phase change material by chemical composition.Organic phase change material includes pair
Benzenediol, PEG, hexadecane etc., inorganic phase-changing material can be divided into alloy, metal and hydrated salt.Hydrated salt is most important one
Kind Inorganic phase change energy storage material, it has, and thermal coefficient is high, latent heat of phase change is big, price is low, does not have many advantages, such as combustibility, but
It is that it has the shortcomings that supercooling, mutually separates, leaks.
Common hydrated salt has MgCl in phase-change material2·6H2O, CaCl2·6H2O, NaSO4·10H2O, wherein six water
Closing calcium chloride is a kind of highly important inorganic hydrous salt phase transition material.29 DEG C of its phase transition temperature, phase transformation enthalpy are 191J/g
Left and right.But its problem of phase separation limits its application.
Six calcium chloride hydrates first pass around two-phase section in temperature-fall period, and subsequent peritectoid forms crystal.In crystallization process
Little particle is formed in two-phase section to settle in liquid hydrated salt due to the effect of gravity, is precipitated, and it is small to form high density in bottom
Particle, these little particles cannot fully absorb moisture, therefore be unable to complete the process of peritectoid, to occur mutually to separate, this phase
Separation can cause the disappearance of phase-change material phase change energy storage function.
Summary of the invention
Technical solution provided by the present invention provides a kind of completely new cold accumulation air-conditioner, using completely new cold-storage phase-change material,
Heating conduction excellent possessed by graphene itself, self-lubrication and the high characteristic combined are made full use of, graphene is designed
At cellular, to solve the problem of phase separation of phase-changing energy storage material, the heat storage and cold accumulation of phase-change material is further improved
Energy.
Based on this, the present invention provides a kind of cold accumulation air-conditioner, including refrigeration unit, heat exchanger plates, phase-change material cold-storage device, use
Family air-conditioning, refrigerating water pump and water pump, the phase-change material cold-storage device carry air conditioner cold accumulation phase-change material comprising hydrated salt,
Hydroxyl carbon nano tube and thin porous layer graphene.
Wherein, the mass ratio of three kinds of ingredients of the air conditioner cold accumulation phase-change material is hydrated salt: hydroxyl carbon nano tube: more
Hole thin graphene=1:1~1.2:0.3~0.5.
Wherein, the specific preparation method of the hydroxyl carbon nano tube is to mix multi-walled carbon nanotube with sodium hydroxide,
Add ethanol in proper amount, after the ball mill grinding regular hour, reactant is washed with deionized to neutrality, is subsequently placed into vacuum
It is dried in drying box.
Wherein, the mass ratio that uses of the multi-walled carbon nanotube and sodium hydroxide is 1:10~20.
Wherein, the usage amount of the ethyl alcohol is that every 1g sodium hydroxide uses 2mL~3mL ethyl alcohol.
Wherein, the milling time is 15~20 hours.
Wherein, hydrated salt can be Magnesium dichloride hexahydrate, six hydrated sulfuric acid sodium, six calcium chloride hydrates.
Wherein, the phase-change material the preparation method comprises the following steps:
Six calcium chloride hydrates and a small amount of deionized water are added in the first step in the reaction vessel, heat under conditions of 75 DEG C
2-3 hours；
Second step is proportionally added into hydroxyl carbon nano tube and thin porous layer graphene in the reaction vessel of the first step,
It stirs evenly, is placed in refrigerator and refrigerates 12 hours, take out and place 20 hours in air, obtain inorganic phase-changing material；
Third step coats inorganic phase-changing material using paraffin, and specially paraffin is added in n-hexane, completely molten
Solution is then added the phase-change material that second step obtains, is stirred at room temperature 5 hours, mixing speed 400rpm, then filters,
Filtration cakes torrefaction obtains the inorganic phase-changing material of paraffin cladding.
By adopting the above-described technical solution, the beneficial effects of the present invention are:
Technical solution provided by the present invention provides a kind of completely new cold accumulation air-conditioner, using completely new cold-storage phase-change material,
Heating conduction excellent possessed by graphene itself, self-lubrication and the high characteristic combined are made full use of, graphene is designed
At cellular, to solve the problem of phase separation of phase-changing energy storage material, the heat storage and cold accumulation of phase-change material is further improved
Energy.
Detailed description of the invention
The DSC heating curve and temperature lowering curve of the phase-change material of Fig. 1 embodiment of the present invention preparation；
The overall structure figure of Fig. 2 cold storage air conditioning apparatus provided in an embodiment of the present invention.
In figure: 1- refrigeration unit, 2- refrigerating water pump, 3- phase-change material cold-storage device, 4- heat exchanger plates, 5- water pump, 6- user are empty
It adjusts.
Specific embodiment
The present invention provides a kind of air conditioner cold accumulation phase-change material comprising hydrated salt, hydroxyl carbon nano tube and thin porous layer
Graphene.We have found in the research of early stage, and carbon nanotube is used in phase-change material, passes through Van der Waals between carbon nanotube
Power links together, the passage of heat of formation rule, and is further modified to carbon nanotube, and being formed, there is the carbon of many hydroxyls to receive
Mitron has hydroxy functional group abundant in carbon nano tube surface, has very high water absorbability, facilitate by forming water
It closes key and improves the stability and reliability of hydrated salt, and be beneficial to the absorption of liquid hydrated salt.
Although carbon nanotube improves a lot for the thermal conductivity of phase-change material, due to carbon nanotube Van der Waals force and
Big specific surface area makes carbon nanotube be difficult to disperse when preparing nano-fluid.But it have been found that thin graphene has
Good self-lubrication and the high characteristic combined, make entire phase transformation System forming high fluidity, on the one hand make point of carbon nanotube
It is more preferable to dissipate property, can preferably construct thermal conducting path, on the other hand, the addition of the thin graphene with self-lubrication makes whole
A phase transformation system continuously shifts and reduces the coefficient of friction of medium and inorganic particulate, this is for forming high fluidity, high volume point
Several phase transformation systems is highly beneficial, reduces and is deposited to liquid hydrated salt bottom possibility in the little particle that two-phase section is formed, makes whole
Body system density is evenly distributed, and little particle comes into full contact with water, completes the process of peritectoid.Furthermore graphene is designed to porous
Shape closes the stability and reliability that surface tension effects improve hydrated salt using the capillarity of porous structure.
The mass ratio of three kinds of ingredients is hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1~1.2:
0.3~0.5, preferably 1:1:0.4.
The hydroxyl carbon nano tube specific adds suitable the preparation method comprises the following steps: multi-walled carbon nanotube is mixed with sodium hydroxide
Amount ethyl alcohol is washed with deionized reactant to neutrality, is subsequently placed into vacuum drying after the ball mill grinding regular hour
It is dried in case.
The mass ratio that uses of the multi-walled carbon nanotube and sodium hydroxide is 1:10~20, further preferred 1:15.
The usage amount of the ethyl alcohol is that every 1g sodium hydroxide uses 2mL~3mL ethyl alcohol, further preferred 2mL.
The milling time is 15~20 hours, preferably 20 hours.
The thin porous layer graphene is prepared using chemical vapour deposition technique comprising:
The first step keeps heating rate by nickel foam stick as in CVD reactor, being warming up to 800 DEG C under the conditions of argon gas
10 DEG C/min, the throughput 280cm of argon gas3/ min,
Second step is subsequently passed hydrogen, hydrogen flowing quantity 150cm3/ min leads to the subsequent high temperature of reactor of continuing rising of 5min extremely
1000℃；
Third step, is subsequently passed methane gas, and the usage amount of methane is 30cm3/ min is maintained at carbon in 1000 DEG C of methane
Atom is deposited in nickel foam, carries out the growth 20min of thin porous layer graphene, is closed methane gas, is down to room temperature；
The nickel foam for being deposited with thin porous layer graphene is taken out, is placed in hot hydrochloric acid solution and impregnates 10min by the 4th step,
Chemical attack is carried out, nickel foam is removed, product taking-up, which is placed in hot acetone solution, impregnates 10min, obtains thin porous layer graphene.
Hydrated salt can be Magnesium dichloride hexahydrate, six hydrated sulfuric acid sodium, six calcium chloride hydrates, preferably six chloride hydrates
Calcium.The hydrated salt uses 40% matter by the hydrated salt by associated salts by crystallization acquisition high-purity, such as six calcium chloride hydrates
The calcium chloride solution of amount percentage carries out crystallization acquisition.
The phase-change material the preparation method comprises the following steps:
Six calcium chloride hydrates and a small amount of deionized water are added in the first step in the reaction vessel, heat under conditions of 75 DEG C
2-3 hours；
Second step is proportionally added into hydroxyl carbon nano tube and thin porous layer graphene in the reaction vessel of the first step,
It stirs evenly, is placed in refrigerator and refrigerates 12 hours, take out and place 20 hours in air, obtain inorganic phase-changing material；
Third step coats inorganic phase-changing material using paraffin, and specially paraffin is added in n-hexane, completely molten
Solution is then added the phase-change material that second step obtains, is stirred at room temperature 5 hours, mixing speed 400rpm, then filters,
Filtration cakes torrefaction obtains the inorganic phase-changing material of paraffin cladding.
The present invention also provides a kind of cold accumulation air-conditioners, including refrigeration unit, heat exchanger plates, phase-change material cold-storage device, Yong Hukong
It adjusts, refrigerating water pump and water pump, the application phase-change material is housed on phase-change material cold-storage device.
The refrigeration unit is connect by pipeline with refrigerating water pump, phase-change material cold-storage device, phase-change material cold-storage device with
Refrigerating water pump connect by pipeline with heat exchanger plates, yet another face, user's air-conditioning and water pump by piping connection, and pass through pipeline and
Heat exchanger plates connection.
Refrigerant is flowed through refrigeration unit cooling, is transported in phase-change material cold-storage device to phase transformation by refrigeration unit operation
Material cooling, meanwhile, another side ducts of phase-change material cold-storage device send out refrigerant, by freezing in pump reflux host,
The other side, refrigerant flow through heat exchanger plates, and with the water coke slurry heat for flowing through heat exchanger plates, water passes through user's air-conditioning.
Below using embodiment and attached drawing come the embodiment that the present invention will be described in detail, how skill is applied to the present invention whereby
Art means solve technical problem, and the realization process for reaching technical effect can fully understand and implement.
The preparation of thin porous layer graphene
By nickel foam stick as in CVD reactor, being warming up to 800 DEG C under the conditions of argon gas, keep 10 DEG C of heating rate/
Min, the throughput 280cm of argon gas3/ min is subsequently passed hydrogen, hydrogen flowing quantity 150cm3It is subsequent of continuing rising high anti-to lead to 5min by/min
Answer device temperature to 1000 DEG C；It is subsequently passed methane gas, the usage amount of methane is 30cm3/ min is maintained in 1000 DEG C of methane
Carbon atom is deposited in nickel foam, carries out the growth 20min of thin porous layer graphene, is closed methane gas, is down to room temperature；It will sink
Product has the nickel foam of thin porous layer graphene to take out, and is placed in hot hydrochloric acid solution and impregnates 10min, carries out chemical attack, removes de-soak
Foam nickel, product taking-up, which is placed in hot acetone solution, impregnates 10min, obtains thin porous layer graphene.
The preparation of hydroxyl carbon nano tube
Multi-walled carbon nanotube and sodium hydroxide are mixed according to the ratio of mass ratio 1:15, add ethyl alcohol, every 1g sodium hydroxide
Using 2mL ethyl alcohol, after ball mill grinding 20h, reactant is washed with deionized to neutrality, is subsequently placed into vacuum oven
Middle drying.
Embodiment 1
Six calcium chloride hydrates and a small amount of deionized water are added in the reaction vessel, heats 3 hours, obtains under conditions of 75 DEG C
Obtain hydrated salt, in mass ratio hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1:0.4 is preparing hydrated salt
Hydroxyl carbon nano tube and thin porous layer graphene are further added in container, stirs evenly, it is small to be placed on refrigeration 12 in refrigerator
When, taking-up is placed 20 hours in air, and inorganic phase-changing material is obtained, and paraffin is added in n-hexane, is completely dissolved, and is then added
Enter previously obtained inorganic phase-changing material, be stirred at room temperature 5 hours, mixing speed 400rpm, then filter, filter cake is dry
It is dry, obtain the inorganic phase-changing material of paraffin cladding.
Comparative example 1
Six calcium chloride hydrates and a small amount of deionized water are added in the reaction vessel, heats 3 hours, obtains under conditions of 75 DEG C
Obtain hydrated salt, in mass ratio hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1:0.4 is preparing hydrated salt
Hydroxyl carbon nano tube and thin porous layer graphene are further added in container, stirs evenly, it is small to be placed on refrigeration 12 in refrigerator
When, taking-up is placed 20 hours in air, and inorganic phase-changing material is obtained, and paraffin is added in n-hexane, is completely dissolved, and is then added
Enter previously obtained inorganic phase-changing material.
Comparative example 2
Compared with Example 1, thin porous layer graphene is not added.
The thermal performance analysis of phase-change material
Using the hot property of differential scanning calorimetry (differential scanning calorimeter DSCQ20) measurement phase-change material.Phase-change material
It is loaded into aluminium DSC disk, and purifies sample room (50mL/min) with nitrogen, 10 DEG C/min of sweep speed used in the test,
Temperature range control is from -50 DEG C to 80 DEG C.
The enthalpy of phase change of 1 different materials of table compares
| Melting enthalpy (J/g) | Crystallization enthalpy (J/g) | |
| Comparative example 2 | 109.1 | 95.6 |
| Comparative example 1 | 120.6 | 105.3 |
| Embodiment 1 | 125.9 | 109.8 |
As it can be seen from table 1 comparing the comparative example 2 without addition thin porous layer graphene, being added to thin porous layer graphite
The melting enthalpy of the phase-change material of alkene increased, and illustrate the addition of thin porous layer graphene, and the crystallization enthalpy of phase change of three kinds of materials
It is below fusion enthalpy, this may be the special crystallization process due to six calcium chloride hydrates, and there are two steps, i.e. four water of the first step for it
Close the formation of calcium chloride and the peritectic reaction of second step mixture.
Figure it is seen that the inorganic phase-changing material II for being not added with the phase-change material I of graphene, not coated by paraffin
Crystallization temperature with the inorganic phase-changing material III coated by paraffin is respectively 1.1 DEG C, 0.5 DEG C and 2.5 DEG C.And it is not added with graphite
The melting temperature of the phase-change material of alkene, the inorganic phase-changing material not coated using paraffin and the inorganic phase-changing material for using paraffin cladding
Degree is respectively 28.4 DEG C, 28.7 DEG C and 28.9 DEG C, can be seen that the addition of thin porous layer graphene to six by the result of Fig. 2
The phase transition temperature of calcium chloride hydrate influences little.
Embodiment 2
Compared with Example 1, hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1:0.3.
Embodiment 3
Compared with Example 1, hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1:0.5.
Comparative example 3
Compared with Example 1, hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1:0.1.
Comparative example 4
Compared with Example 1, hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1:0.6.
The enthalpy of phase change of 2 thin porous layer graphene accounting of table compares (J/g)
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 3 | Comparative example 4 | |
| Melting enthalpy | 125.9 | 129.1 | 133.6 | 119.7 | 122.6 |
| Crystallization enthalpy | 109.8 | 112.3 | 115.9 | 106.5 | 107.2 |
In composite phase-change material, enthalpy of phase change is mainly provided by six calcium chloride hydrates, and thin porous layer graphene is for multiple
The enthalpy of phase change for closing phase-change material does not contribute, but the increase of thin porous layer graphene also can correspondingly increase in composite phase-change material
Add the overall molecule energy of phase-change material, so that promoting the heat storage capacity of composite phase-change material itself enhances.When thin porous layer graphite
When the adding too much of alkene, the enthalpy of phase change of composite phase-change material declines again, therefore, when the additive amount of thin porous layer graphene
In certain range, the molecular potential increase of the higher phase-change material of mass fraction is more obvious.
Thermal cycling stability is the key influence factor that phase-change material uses.To comparative example 2, comparative example 1 and embodiment 1
Phase-change material carries out 100 DSC scan round, the results are shown in Table 3.
3 different materials thermal stability of table compares (J/g)
The reduction of enthalpy is due to caused by the loss of the crystallization water during temperature raising and lowering in cyclic process.It arranges above
Out statistics indicate that, the low ratio of the enthalpy drop of the phase-change material containing graphene be lower than without containing graphene phase-change material, circulation
Stability is higher, and phase change energy storage function is more preferable.
As shown in Figure 1, cold accumulation air-conditioner provided by the invention, including refrigeration unit 1, heat exchanger plates 4, phase-change material cold-storage device
3, user's air-conditioning 6, refrigerating water pump 2 and water pump 5.
Refrigeration unit 1 is run, and refrigerant is flowed through refrigeration unit 1 and is cooled down, is transported in phase-change material cold-storage device 3 to phase
Become material cooling, meanwhile, another side ducts of phase-change material cold-storage device 3 send out refrigerant, by the reflux host of refrigerating water pump 2
In, the other side, refrigerant flows through heat exchanger plates 4, and with the water coke slurry heat for flowing through heat exchanger plates 4, water passes through user's air-conditioning 6.
All above-mentioned this intellectual properties of primarily implementation, there is no this new products of implementation of setting limitation other forms
And/or new method.Those skilled in the art will utilize this important information, above content modification, to realize similar execution feelings
Condition.But all modifications or transformation belong to the right of reservation based on new product of the present invention.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (8)
1. a kind of cold accumulation air-conditioner, it is characterised in that: including refrigeration unit, heat exchanger plates, phase-change material cold-storage device, user's air-conditioning,
Refrigerating water pump and water pump, the phase-change material cold-storage device carry air conditioner cold accumulation phase-change material comprising hydrated salt, hydroxylating carbon
Nanotube and thin porous layer graphene.
2. cold accumulation air-conditioner as described in claim 1, it is characterised in that: the matter of three kinds of ingredients of the air conditioner cold accumulation phase-change material
Amount is than being hydrated salt: hydroxyl carbon nano tube: thin porous layer graphene=1:1~1.2:0.3~0.5.
3. cold accumulation air-conditioner as claimed in claim 1 or 2, it is characterised in that: the specific preparation side of the hydroxyl carbon nano tube
Method be multi-walled carbon nanotube is mixed with sodium hydroxide, add ethanol in proper amount, after the ball mill grinding regular hour, spend from
Sub- water washing reactant is subsequently placed into vacuum oven and dries to neutrality.
4. cold accumulation air-conditioner as described in claims 1 to 3, it is characterised in that: the multi-walled carbon nanotube and sodium hydroxide make
It is 1:10~20 with mass ratio.
5. the cold accumulation air-conditioner as described in Claims 1-4, it is characterised in that: the usage amount of the ethyl alcohol is every 1g sodium hydroxide
Use 2mL~3mL ethyl alcohol.
6. the cold accumulation air-conditioner as described in claim 1 to 5, it is characterised in that: the milling time is 15~20 hours.
7. the cold accumulation air-conditioner as described in claim 1 to 6, it is characterised in that: hydrated salt can be Magnesium dichloride hexahydrate, six hydrations
Sodium sulphate, six calcium chloride hydrates.
8. cold accumulation air-conditioner described in claim 1 to 7, it is characterised in that: the preparation method of the phase-change material is,
Six calcium chloride hydrates and a small amount of deionized water are added in the first step in the reaction vessel, and it is small that 2-3 is heated under conditions of 75 DEG C
When；
Second step is proportionally added into hydroxyl carbon nano tube and thin porous layer graphene in the reaction vessel of the first step, stirring
Uniformly, it is placed in refrigerator and refrigerates 12 hours, take out and place 20 hours in air, obtain inorganic phase-changing material；
Third step coats inorganic phase-changing material using paraffin, and specially paraffin is added in n-hexane, is completely dissolved,
The phase-change material that second step obtains then is added, is stirred at room temperature 5 hours, mixing speed 400rpm, then filters, filter cake
It is dry, obtain the inorganic phase-changing material of paraffin cladding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213280.9A CN109294523A (en) | 2018-10-18 | 2018-10-18 | A kind of cold accumulation air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213280.9A CN109294523A (en) | 2018-10-18 | 2018-10-18 | A kind of cold accumulation air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109294523A true CN109294523A (en) | 2019-02-01 |
Family
ID=65157209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811213280.9A Pending CN109294523A (en) | 2018-10-18 | 2018-10-18 | A kind of cold accumulation air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109294523A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819669A (en) * | 2021-09-15 | 2021-12-21 | 浙江大学 | Low-temperature refrigerating device and method based on carbon nanotube gravity oil separation effect |
| CN114539981A (en) * | 2020-11-27 | 2022-05-27 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | Graphene/carbon nanotube composite low-temperature phase change material, preparation method and application |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293761Y (en) * | 1996-11-10 | 1998-10-07 | 中国科学技术大学 | Cooling & cool-storing apparatus for air conditioner |
| CN1587841A (en) * | 2004-09-03 | 2005-03-02 | 清华大学 | Ice smelting and cold storage device in parallel mono heat exchanger |
| CN1944566A (en) * | 2006-10-12 | 2007-04-11 | 东莞市广大制冷有限公司 | Phase change cold storage agent for air conditioner and its producing method |
| CN101021348A (en) * | 2006-10-12 | 2007-08-22 | 广东省吉荣空调设备公司 | Dynamic high temperature cool accumulation air conditioner system |
| CN101434830A (en) * | 2008-12-16 | 2009-05-20 | 上海理工大学 | Eutectic salt cold-storage material |
| CN102703034A (en) * | 2012-05-24 | 2012-10-03 | 范忠娟 | Nanometer particles-containing cold accumulating material for cooling pad |
| CN103344146A (en) * | 2013-07-22 | 2013-10-09 | 大连国翔科技技术发展有限公司 | Low temperature step phase change heat storage and cold storage device |
| CN203478789U (en) * | 2013-07-10 | 2014-03-12 | 邝嘉豪 | Refrigerator unit and ice storage tank joint refrigerating system |
| CN104232024A (en) * | 2014-08-15 | 2014-12-24 | 北京宇田相变储能科技有限公司 | Energy-storage material for eliminating phase-separating and supercooling |
| CN104344479A (en) * | 2013-07-23 | 2015-02-11 | 海信（山东）空调有限公司 | Cold accumulation type energy-saving air conditioning system and operation method thereof |
| CN104566723A (en) * | 2014-01-03 | 2015-04-29 | 爱斯制冷科技（江阴）有限公司 | Ice storage air-conditioning system using different phase-change materials |
| CN104610922A (en) * | 2014-12-31 | 2015-05-13 | 轻工业自动化研究所 | Phase-change material for cold storage air conditioner and preparation method of phase-change material |
| CN106242494A (en) * | 2016-08-08 | 2016-12-21 | 上海交通大学 | Material for storing heat of phase change in low temperature and preparation method thereof in graphene aerogel complex intensifying |
| CN106594929A (en) * | 2016-12-19 | 2017-04-26 | 深圳市奥宇节能技术股份有限公司 | Ice storage central air-conditioning system and optimal control method |
| CN107189765A (en) * | 2017-07-06 | 2017-09-22 | 贺迈新能源科技（上海）有限公司 | A kind of deepfreeze hydrous salt phase change material and its preparation method and application |
| CN107575972A (en) * | 2017-09-06 | 2018-01-12 | 苏州黑盾环境股份有限公司 | A kind of heat pipe air conditioner all-in-one and its control method with phase-change accumulation energy |
| CN107586537A (en) * | 2017-07-26 | 2018-01-16 | 同济大学 | A kind of composite phase-change material and preparation method thereof |
| CN207299346U (en) * | 2017-10-10 | 2018-05-01 | 总立机电工程（苏州）有限公司 | Central air-conditioning night low power consumption cold accumulating device by ice |
| CN207350607U (en) * | 2017-05-25 | 2018-05-11 | 高晨 | A kind of ice-storage air-conditioning structure |
| CN108061344A (en) * | 2017-11-22 | 2018-05-22 | 国网湖北省电力有限公司 | A kind of optimal coordinated control system and method for distribution family photovoltaic+ice cold-storage |
| CN108204643A (en) * | 2017-12-01 | 2018-06-26 | 黄旭东 | A kind of High Temperature Phase Change Cool Regeneration Plant |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN108668508A (en) * | 2018-06-08 | 2018-10-16 | 浙江大学山东工业技术研究院 | The cooling device and cabinet of cabinet |
-
2018
- 2018-10-18 CN CN201811213280.9A patent/CN109294523A/en active Pending
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293761Y (en) * | 1996-11-10 | 1998-10-07 | 中国科学技术大学 | Cooling & cool-storing apparatus for air conditioner |
| CN1587841A (en) * | 2004-09-03 | 2005-03-02 | 清华大学 | Ice smelting and cold storage device in parallel mono heat exchanger |
| CN1944566A (en) * | 2006-10-12 | 2007-04-11 | 东莞市广大制冷有限公司 | Phase change cold storage agent for air conditioner and its producing method |
| CN101021348A (en) * | 2006-10-12 | 2007-08-22 | 广东省吉荣空调设备公司 | Dynamic high temperature cool accumulation air conditioner system |
| CN101434830A (en) * | 2008-12-16 | 2009-05-20 | 上海理工大学 | Eutectic salt cold-storage material |
| CN102703034A (en) * | 2012-05-24 | 2012-10-03 | 范忠娟 | Nanometer particles-containing cold accumulating material for cooling pad |
| CN203478789U (en) * | 2013-07-10 | 2014-03-12 | 邝嘉豪 | Refrigerator unit and ice storage tank joint refrigerating system |
| CN103344146A (en) * | 2013-07-22 | 2013-10-09 | 大连国翔科技技术发展有限公司 | Low temperature step phase change heat storage and cold storage device |
| CN104344479A (en) * | 2013-07-23 | 2015-02-11 | 海信（山东）空调有限公司 | Cold accumulation type energy-saving air conditioning system and operation method thereof |
| CN104566723A (en) * | 2014-01-03 | 2015-04-29 | 爱斯制冷科技（江阴）有限公司 | Ice storage air-conditioning system using different phase-change materials |
| CN104232024A (en) * | 2014-08-15 | 2014-12-24 | 北京宇田相变储能科技有限公司 | Energy-storage material for eliminating phase-separating and supercooling |
| CN104610922A (en) * | 2014-12-31 | 2015-05-13 | 轻工业自动化研究所 | Phase-change material for cold storage air conditioner and preparation method of phase-change material |
| CN106242494A (en) * | 2016-08-08 | 2016-12-21 | 上海交通大学 | Material for storing heat of phase change in low temperature and preparation method thereof in graphene aerogel complex intensifying |
| CN106594929A (en) * | 2016-12-19 | 2017-04-26 | 深圳市奥宇节能技术股份有限公司 | Ice storage central air-conditioning system and optimal control method |
| CN207350607U (en) * | 2017-05-25 | 2018-05-11 | 高晨 | A kind of ice-storage air-conditioning structure |
| CN107189765A (en) * | 2017-07-06 | 2017-09-22 | 贺迈新能源科技（上海）有限公司 | A kind of deepfreeze hydrous salt phase change material and its preparation method and application |
| CN107586537A (en) * | 2017-07-26 | 2018-01-16 | 同济大学 | A kind of composite phase-change material and preparation method thereof |
| CN107575972A (en) * | 2017-09-06 | 2018-01-12 | 苏州黑盾环境股份有限公司 | A kind of heat pipe air conditioner all-in-one and its control method with phase-change accumulation energy |
| CN207299346U (en) * | 2017-10-10 | 2018-05-01 | 总立机电工程（苏州）有限公司 | Central air-conditioning night low power consumption cold accumulating device by ice |
| CN108061344A (en) * | 2017-11-22 | 2018-05-22 | 国网湖北省电力有限公司 | A kind of optimal coordinated control system and method for distribution family photovoltaic+ice cold-storage |
| CN108204643A (en) * | 2017-12-01 | 2018-06-26 | 黄旭东 | A kind of High Temperature Phase Change Cool Regeneration Plant |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN108668508A (en) * | 2018-06-08 | 2018-10-16 | 浙江大学山东工业技术研究院 | The cooling device and cabinet of cabinet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539981A (en) * | 2020-11-27 | 2022-05-27 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | Graphene/carbon nanotube composite low-temperature phase change material, preparation method and application |
| CN113819669A (en) * | 2021-09-15 | 2021-12-21 | 浙江大学 | Low-temperature refrigerating device and method based on carbon nanotube gravity oil separation effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109609096A (en) | A kind of air conditioner cold accumulation phase-change material and preparation method thereof | |
| Song et al. | Experimental and numerical investigation on dodecane/expanded graphite shape-stabilized phase change material for cold energy storage | |
| Zhao et al. | Research progress of phase change cold storage materials used in cold chain transportation and their different cold storage packaging structures | |
| Da Cunha et al. | Thermal energy storage for low and medium temperature applications using phase change materials–a review | |
| Peng et al. | Effect of fumed silica additive on supercooling, thermal reliability and thermal stability of Na2HPO4· 12H2O as inorganic PCM | |
| Saranprabhu et al. | Magnesium oxide nanoparticles dispersed solar salt with improved solid phase thermal conductivity and specific heat for latent heat thermal energy storage | |
| Xu et al. | Development of novel composite PCM for thermal energy storage using CaCl2· 6H2O with graphene oxide and SrCl2· 6H2O | |
| Li et al. | Review of cold storage materials for air conditioning application | |
| Li et al. | Preparation and thermophysical properties of low temperature composite phase change material octanoic-lauric acid/expanded graphite | |
| Bao et al. | Development of a stable inorganic phase change material for thermal energy storage in buildings | |
| Jin et al. | Thermal conductivity enhancement of a sodium acetate trihydrate–potassium chloride–urea/expanded graphite composite phase–change material for latent heat thermal energy storage | |
| Liu et al. | Development of low-temperature eutectic phase change material with expanded graphite for vaccine cold chain logistics | |
| Zou et al. | Preparation and performance of form-stable TBAB hydrate/SiO2 composite PCM for cold energy storage | |
| CN103923619B (en) | Molten nano-carbonate heat transfer and accumulation medium, and preparation method and application thereof | |
| Wu et al. | Preparation and thermal property analysis of a novel phase change heat storage material | |
| Meng et al. | Development and application of phase change material in fresh e-commerce cold chain logistics: A review | |
| Liu et al. | Experimental investigation on thermal properties of sodium acetate trihydrate based phase change materials for thermal energy storage | |
| CN109294523A (en) | A kind of cold accumulation air-conditioner | |
| Wang et al. | Experimental study on the thermodynamic performance of a novel tetrabutylammonium bromide hydrate cold storage system | |
| Li et al. | A template-method synthesis of mesoporous-MgO/expanded graphite for enhancing thermal properties of methyl palmitate-lauric acid phase change materials | |
| Ye et al. | Preparation and thermal performance enhancement of sodium thiosulfate pentahydrate-sodium acetate trihydrate/expanded graphite phase change energy storage composites | |
| Chen et al. | Thermal properties of stearic acid/active aluminum oxide/graphene nanoplates composite phase change materials for heat storage | |
| Zheng et al. | Experimental study on the preparation and cool storage performance of a phase change micro-capsule cold storage material | |
| Li et al. | Tailored calcium chloride hexahydrate as a composite phase change material for cold storage | |
| Sang et al. | Studies of eutectic hydrated salt/polymer hydrogel composite as form-stable phase change material for building thermal energy storage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190201 |