CN104531080B - Metal/organic matter composite medium-low temperature phase change energy storage material and preparation method thereof - Google Patents
Metal/organic matter composite medium-low temperature phase change energy storage material and preparation method thereof Download PDFInfo
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- CN104531080B CN104531080B CN201510007364.7A CN201510007364A CN104531080B CN 104531080 B CN104531080 B CN 104531080B CN 201510007364 A CN201510007364 A CN 201510007364A CN 104531080 B CN104531080 B CN 104531080B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 77
- 239000011232 storage material Substances 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 230000008859 change Effects 0.000 title abstract description 26
- 239000005416 organic matter Substances 0.000 title abstract description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 68
- 239000011591 potassium Substances 0.000 claims abstract description 68
- 239000012188 paraffin wax Substances 0.000 claims abstract description 67
- 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 abstract description 62
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 62
- 239000011734 sodium Substances 0.000 claims abstract description 62
- 239000001993 wax Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 33
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 28
- 150000001875 compounds Chemical class 0.000 claims description 25
- 238000000338 in vitro Methods 0.000 claims description 14
- 238000002604 ultrasonography Methods 0.000 claims description 14
- 235000019809 paraffin wax Nutrition 0.000 claims 1
- 235000019271 petrolatum Nutrition 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 42
- 238000005338 heat storage Methods 0.000 abstract description 6
- 238000013329 compounding Methods 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 37
- 230000008569 process Effects 0.000 description 21
- 230000007704 transition Effects 0.000 description 17
- 239000012782 phase change material Substances 0.000 description 16
- 238000005520 cutting process Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000632 Alusil Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- 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
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a metal/organic matter composite medium-low temperature phase change energy storage material and a preparation method thereof. The method comprises the steps of uniformly compounding metal potassium and paraffin wax, and metal sodium and Fischer-Tropsch wax in a glove box in a vacuum inert gas protection atmosphere by adopting a heating ultrasonic stirring method, and then cooling and pressing for forming. The metal potassium and sodium have the characteristics of high thermal conductivity, low melting point, large latent heat, small density and the like, and the potassium and the sodium are compounded with the paraffin and the Fischer-Tropsch wax respectively, so that the heat conduction performance of the inorganic energy storage material can be improved, and compared with other doped heat conduction materials, the heat storage capacity of the energy storage material can be increased, and the heat storage density is enlarged. The prepared metal potassium/paraffin wax composite low-temperature phase change energy storage material is suitable for heat energy storage in the low-temperature field of 50-100 ℃, and the metal sodium/Fischer-Tropsch wax composite medium-temperature phase change energy storage material is suitable for heat energy storage in the medium-temperature field of 100-200 ℃.
Description
Technical field
The invention belongs to technical field of function materials, is related to composite phase-change energy storage material, and particularly metal/organic matter is compound
Middle low-temperature phase-change energy-storing material and preparation method thereof.
Background technology
In phase-change material phase transition process, release/absorption latent heat can be used as thermal energy storage, solve the time of energy supply and demand and
It is spatially insufficient, compared with sensible heat energy storage, the features such as phase-change accumulation energy has that energy density is high, process stabilization, and temperature is constant.Too
The fields such as sun can utilize, building energy conservation, preheating and Waste Heat Recovery, Aero-Space and extraordinary dress ornament have wide variety of prospect.
Current most widely used organic phase change energy storage material is paraffin and Inorganic phase change energy storage material is fuse salt, paraffin
It is mainly used in 50 DEG C -100 DEG C or so of low temperature heat accumulation field, fuse salt is mainly used in 100 DEG C -400 DEG C or so of medium temperature heat accumulation.
Although the phase-changing energy storage materials such as paraffin and fuse salt have, storage density is high, heat storage capacity is strong, heat endurance is high, cheap etc.
Advantage, but the extremely low thermal conductivity factor of paraffin hinders thermal energy storage and the speed of release, turns into the maximum obstruction of popularization and application, melts
Melt the corrosivity of salt under the high temperature conditions as the relatively hang-up in application process.
Domestic and foreign scholars are directed to strengthening the research of organic phase change material heat conductivility.The main method taken has：
（1）Addition has high thermal conductivity material, such as copper powder, aluminium powder, carbon dust and CNT in phase-change material
Deng with augmentation of heat transfer function.When Khan etc. have studied addition aluminium, iron, copper, alusil alloy and lead base compound in phase-change material
The heat-transfer character of phase-change material in the curing process, it is indicated that the rate travel of solid liquid interface is heavily dependent on admixture
Thermal conductivity factor after the fusing of thermal conductivity factor and phase-change material ratio [Numerical Heat Transfer, 1994, V25:
209-221].The solar energy that Eman-Bellah etc. have studied using paraffin as phase-change material stores hot systems, adds aluminium powder wherein
Thermal conductivity factor is improved at end.Result of study shows, after adding aluminium powder, the storage heat and Exotherm Time of system have all shortened, and are
System performance be improved [Solar Energy, 2007, V81: 839-845]；
（2）By energy storage material and pure Heat Conduction Material carry out it is compound prepare phase-change material, Heat Conduction Material is only strong in composite
Change heat transfer, accelerate storage/exoergic process.Conventional Heat Conduction Material has the heat conduction such as porous graphite and metal, expanded graphite, foam metal
Backing material, energy storage material is melted and immersed or vacuum injection is to inside backing material, is prepared into composite phase-change energy storage material.
Xavier etc. is using graphite as backing material, by paraffin absorption in the graphite matrix with loose structure, composition graphite matrix/
Paraffin composite phase change material, thermal conductivity factor from the 0.24W/ (mK) of paraffin refined wax brought up to 4-70W/ (mK) [
International Journal of Heat and Mass Transfer, 2001, V44:2727-2737].Sari etc.
Paraffin/graphite figuration composite phase-changing material is prepared for, research shows that the latent heat of composite phase-change material is suitable with paraffin refined wax
[Applied Thermal Engineering. 2007, V27: 1271-1277]。
Both the above method can largely improve the heat conductivility of energy storage material, but there is also some shortcomings：
（1）Addition or compound Heat Conduction Material only have heat conduction function, occupy certain energy storage material ratio and reduce energy storage density,
Stored energy capacitance can be reduced with Heat Conduction Material addition or compound increase, cause the heat storage capacity and heat conductivility of energy storage coefficient
Mutually restrict, can not get both；
（2）Differed using addition metal dust or nano heat-conductive material, energy storage material with Heat Conduction Material density, use process
In must add dispersant and make it that Heat Conduction Material is fully dispersed, but as energy storage-exoergic process circulates, dispersant function can be progressively
Failure, produce energy storage material and be layered with Heat Conduction Material because density differs, heat conductivility progressively weakens, and the dispersant of addition also drops
Low energy storage density, energy storage material latent heat of phase change is reduced, about 10%-30% or so is reduced compared to pure phase-change material；
（3）Using Heat Conduction Material and energy storage material compound tense, after generally phase-change material is melted, using immersion or vacuum impregnating
The mode entered and the support material for playing heat conduction function are compound, and the motion for being limited to heat conduction backing material porosity and energy storage material is glued
Degree, energy storage material can not realize 100% injection to Heat Conduction Material, reduce further energy storage density, reduce the phase transformation of energy storage material
Latent heat reduces about 5%-15% or so compared to pure phase-change material.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of compound middle low temperature phase change storage of metal/organic matter
Energy material and preparation method thereof, technical problems to be solved are not only to have improved organic energy storage material heat conductivility but also reduced composite
Stored energy capacitance reduces, and realizes organic energy storage material heat conductivility enhancing, the purpose of heat storage capacity lifting.
To solve to appeal technical problem, the technical scheme is that：Explore energy storage-heat-conducting work medium pair so that energy storage system
The thermal conductivity of system and energy-storage property perfect matching, realize that heat storage capacity gets both with heat conductivility, heat conduction-energy storage working medium is to that must have
There are following characteristics：
1. Heat Conduction Material had both been Heat Conduction Material in thermal energy storage process, participation thermal energy storage process can be undergone phase transition again；
2. Heat Conduction Material there should be identical phase transition temperature with energy storage material, thermal energy storage process phase transformation synchronization, energy storage can be achieved
Uniformly；
3. Heat Conduction Material should also have identical solid-liquid density simultaneously with energy storage material, any energy storage release can be achieved
Solid-liquid transformation process material uniformly mutually mixes.
By inspection information, it is found that metallic potassium and metallic sodium heat conductivility are good, and density and fusing point are relatively low.It is wherein golden
Category potassium has approximate solid-liquid density, phase transition temperature and latent heat of phase change with paraffin, is adapted to low temperature phase change energy storage（50℃-100℃）；
Metallic sodium also has approximate solid-liquid density, phase transition temperature and latent heat of phase change with Fischer-Tropsch wax, is adapted to medium temperature phase-change accumulation energy（100℃-
200℃）.
The phase-changing energy storage material is the compound solid liquid phase change energy-storage material of metal/organic matter.
The solid-liquid phase change energy storage material is potassium/paraffin compound cryosar phase-changing energy storage material and sodium/Fischer-Tropsch wax composite medium-temperature
Phase-changing energy storage material.The physical parameter of metal-organic energy storage working medium pair is as shown in the table.
The preparation of the phase-change material：
1. the preparation of potassium/paraffin compound cryosar phase-changing energy storage material：
A) 0.05g, 0.1,0.15,0.2 and 0.25g metal are respectively cut in the vacuum glove box of inert nitrogen atmosphere
Potassium grain, numbering are respectively 1-5；
B) 4.75g, 4.8g, 4.85g, 4.9g and 4.95g paraffin are weighed in the vacuum glove box of inert nitrogen atmosphere,
The paraffin of different deals is put into the test tube that numbering is respectively 1-5, test tube is heated in glove box and maintains 100
DEG C, it is ensured that invisible spectro paraffin is melted into liquid completely；
C) in glove box, No. 1 metallic potassium grain that step a is produced is put into No. 5 test tubes, and No. 2 metallic potassium grains are put into 4
In number test tube, No. 3 metallic potassium grains are put into No. 3 test tubes, and No. 4 metallic potassium grains are put into No. 2 test tubes, and No. 5 metallic potassium grains are put into No. 1
In test tube, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in all test tubes；
D) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, test tube is put into ultrasonic instrument, if
It is 100kHz to put supersonic frequency, is in vitro put into electric mixer, the dispersed metal by the way of heating, ultrasound and stirring
Potassium；
E) in glove box, well mixed liquid potassium/paraffin composite is poured into mould, cooling is compressing.
2. the preparation of sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material：
A) 0.05g, 0.1,0.15,0.2 and 0.25g metal are respectively cut in the vacuum glove box of inert nitrogen atmosphere
Sodium grain, numbering are respectively 6-10；
B) 4.75g, 4.8g, 4.85g, 4.9g and 4.95g Fischer-Tropsch are weighed in the vacuum glove box of inert nitrogen atmosphere
Wax, the Fischer-Tropsch wax of different deals is put into the test tube that numbering is respectively 6-10, test tube will be heated to and be tieed up in glove box
Hold at 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；
C) in glove box, No. 6 metallic sodium grains that step a is produced are put into No. 10 test tubes, and No. 7 metallic potassium grains are put into 9
In number test tube, No. 8 metallic sodium grains are put into No. 8 test tubes, and No. 9 metallic sodium grains are put into No. 7 test tubes, and No. 10 metallic sodium grains are put into 6
In number test tube, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in all test tubes；
D) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, test tube is put into ultrasonic instrument, if
It is 100kHz to put supersonic frequency, is in vitro put into electric mixer, the dispersed metal by the way of heating, ultrasound and stirring
Sodium；
E) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite is poured into mould, cooling is compressing.
The invention has the advantages that potassium/paraffin the composite and medium temperature proposed by the present invention applied to low temperature energy storage
The sodium of energy storage/Fischer-Tropsch wax composite, not only there is higher heat conductivility, also with larger storage density, higher storage
Thermal capacity.Instantaneous Method is used to measure the thermal conductivity factor of 5%wt potassium/95%wt paraffin compound cryosar phase-changing energy storage materials as 6.23W/
(mK), it is 21 times of the W/ of paraffin refined wax thermal conductivity factor 0.3 (mK), the phase transition temperature of material is measured with differential scanning calorimeter
For 60.1 DEG C, latent heat of phase change 180kJ/kg；Measure the heat conduction of 5%wt potassium/95%wt Fischer-Tropsch wax composite medium-temperature phase-changing energy storage materials
Coefficient is 10.58W/ (mK), is 35 times of the W/ of paraffin refined wax thermal conductivity factor 0.3 (mK), and phase transition temperature is 98.4 DEG C, phase transformation
Latent heat is 165 kJ/kg.
Brief description of the drawings
Fig. 1 is potassium provided by the invention/paraffin compound cryosar phase-change material and sodium/Fischer-Tropsch wax composite medium-temperature phase-change accumulation energy material
The preparation flow figure of material.
Fig. 2 is compressing potassium/paraffin compound cryosar phase-change material provided by the invention and sodium/Fischer-Tropsch wax composite medium-temperature
The photo in kind of phase-changing energy storage material.
Embodiment
The specific embodiment party of the compound middle low-temperature phase-change energy-storing material of metal/inorganic matter of the present invention introduced below and preparation method
Formula, wherein metallic potassium/paraffin compound cryosar phase-changing energy storage material and preparation method are illustrated by embodiment 1-5, metallic sodium/take
Support wax composite medium-temperature phase-change material energy storage material and preparation method are illustrated by embodiment 6-10.
Embodiment 1
Potassium/paraffin compound cryosar phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.05g metallic potassium grains of inert nitrogen atmosphere；
(2) 4.95g paraffin is weighed in the vacuum glove box of inert nitrogen atmosphere, is put into test tube, it is right in glove box
Test tube is heated to and maintains 100 DEG C, it is ensured that invisible spectro paraffin is melted into liquid completely；
(3) in glove box, the 0.05g metallic potassium grains that step (1) is produced are put into the 4.95g paraffin that step (2) produces
Test tube in, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal potassium；
(5) in glove box, well mixed liquid potassium/paraffin composite that step (4) is produced pours into mould,
Cool down compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 1.56W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 63.6 DEG C, latent heat of phase change 205kJ/kg.
Embodiment 2
Potassium/paraffin compound cryosar phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.1g metallic potassium grains of inert nitrogen atmosphere；
(2) 4.9g paraffin is weighed in the vacuum glove box of inert nitrogen atmosphere, is put into test tube, it is right in glove box
Test tube is heated to and maintains 100 DEG C, it is ensured that invisible spectro paraffin is melted into liquid completely；
(3) in glove box, the 0.1g metallic potassium grains that step (1) is produced are put into the 4.9g paraffin that step (2) produces
In test tube, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal potassium；
(5) in glove box, well mixed liquid potassium/paraffin composite that step (4) is produced pours into mould,
Cool down compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 2.38W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 62.9 DEG C, latent heat of phase change 194kJ/kg.
Embodiment 3
Potassium/paraffin compound cryosar phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.15g metallic potassium grains of inert nitrogen atmosphere；
(2) 4.85g paraffin is weighed in the vacuum glove box of inert nitrogen atmosphere, is put into test tube, it is right in glove box
Test tube is heated to and maintains 100 DEG C, it is ensured that invisible spectro paraffin is melted into liquid completely；
(3) in glove box, the 0.15g metallic potassium grains that step (1) is produced are put into the 4.85g paraffin that step (2) produces
Test tube in, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal potassium；
(5) in glove box, well mixed liquid potassium/paraffin composite that step (4) is produced pours into mould,
Cool down compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 3.72W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 62.1 DEG C, latent heat of phase change 189kJ/kg.
Embodiment 4
Potassium/paraffin compound cryosar phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.2g metallic potassium grains of inert nitrogen atmosphere；
(2) 4.8g paraffin is weighed in the vacuum glove box of inert nitrogen atmosphere, is put into test tube, it is right in glove box
Test tube is heated to and maintains 100 DEG C, it is ensured that invisible spectro paraffin is melted into liquid completely；
(3) in glove box, the 0.2g metallic potassium grains that step (1) is produced are put into the 4.8g paraffin that step (2) produces
In test tube, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal potassium；
(5) in glove box, well mixed liquid potassium/paraffin composite that step (4) is produced pours into mould,
Cool down compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 5.04W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 61.3 DEG C, latent heat of phase change 185kJ/kg.
Embodiment 5
Potassium/paraffin compound cryosar phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.25g metallic potassium grains of inert nitrogen atmosphere；
(2) 4.75g paraffin is weighed in the vacuum glove box of inert nitrogen atmosphere, is put into test tube, it is right in glove box
Test tube is heated to and maintains 100 DEG C, it is ensured that invisible spectro paraffin is melted into liquid completely；
(3) in glove box, the 0.25g metallic potassium grains that step (1) is produced are put into the 4.75g paraffin that step (2) produces
Test tube in, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal potassium；
(5) in glove box, well mixed liquid potassium/paraffin composite that step (4) is produced pours into mould,
Cool down compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 6.23W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 60.1 DEG C, latent heat of phase change 180kJ/kg.
Embodiment 6
Sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.05g metallic sodium grains of inert nitrogen atmosphere；
(2) 4.95g Fischer-Tropsch waxes are weighed in the vacuum glove box of inert nitrogen atmosphere, are put into test tube, in glove box
Test tube is heated to and maintains 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；
(3) in glove box, the 0.05g metallic sodium grains that step (1) is produced are put into the 4.95g Fischer-Tropsch that step (2) produces
In the test tube of wax, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal sodium；
(5) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite that step (4) is produced pours into mould
Tool, cooling are compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 2.35W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 103.8 DEG C, latent heat of phase change 178kJ/kg.
Embodiment 7
Sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.1g metallic sodium grains of inert nitrogen atmosphere；
(2) 4.9g Fischer-Tropsch waxes are weighed in the vacuum glove box of inert nitrogen atmosphere, are put into test tube, in glove box
Test tube is heated to and maintains 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；
(3) in glove box, the 0.1g metallic sodium grains that step (1) is produced are put into the 4.9g Fischer-Tropsch waxes that step (2) produces
Test tube in, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal sodium；
(5) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite that step (4) is produced pours into mould
Tool, cooling are compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 4.52W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 101.9 DEG C, latent heat of phase change 175kJ/kg.
Embodiment 8
Sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.15g metallic sodium grains of inert nitrogen atmosphere；
(2) 4.85g Fischer-Tropsch waxes are weighed in the vacuum glove box of inert nitrogen atmosphere, are put into test tube, in glove box
Test tube is heated to and maintains 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；
(3) in glove box, the 0.15g metallic sodium grains that step (1) is produced are put into the 4.85g Fischer-Tropsch that step (2) produces
In the test tube of wax, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal sodium；
(5) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite that step (4) is produced pours into mould
Tool, cooling are compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 6.46W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 100.6 DEG C, latent heat of phase change 171kJ/kg.
Embodiment 9
Sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.2g metallic sodium grains of inert nitrogen atmosphere；
(2) 4.8g Fischer-Tropsch waxes are weighed in the vacuum glove box of inert nitrogen atmosphere, are put into test tube, in glove box
Test tube is heated to and maintains 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；
(3) in glove box, the 0.2g metallic sodium grains that step (1) is produced are put into the 4.8g Fischer-Tropsch waxes that step (2) produces
Test tube in, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal sodium；
(5) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite that step (4) is produced pours into mould
Tool, cooling are compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 8.26W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 99.5 DEG C, latent heat of phase change 168kJ/kg.
Embodiment 10
Sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material and preparation method include following steps：
(1) in the vacuum glove box internal cutting 0.25g metallic sodium grains of inert nitrogen atmosphere；
(2) 4.75g Fischer-Tropsch waxes are weighed in the vacuum glove box of inert nitrogen atmosphere, are put into test tube, in glove box
Test tube is heated to and maintains 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；
(3) in glove box, the 0.25g metallic sodium grains that step (1) is produced are put into the 4.75g Fischer-Tropsch that step (2) produces
In the test tube of wax, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in test tube；
(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, the test tube of step (3) is put into super
In sound instrument, setting supersonic frequency is 100kHz, is in vitro put into electric mixer, using the side of heating, ultrasound and stirring
Formula dispersed metal sodium；
(5) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite that step (4) is produced pours into mould
Tool, cooling are compressing；
(6) thermal conductivity factor for the sample that Instantaneous Method measuring process (5) produces is used as 10.58W/ (mK), using differential
The phase transition temperature that scanning calorimeter measures material is 98.4 DEG C, latent heat of phase change 165kJ/kg.
Claims (4)
- A kind of 1. metallic potassium/paraffin compound cryosar phase-changing energy storage material preparation method, it is characterised in that following steps：(1) 0.05g, 0.1g, 0.15g, 0.2g and 0.25g metallic potassium are respectively cut in the vacuum glove box of inert nitrogen atmosphere Grain, numbering are respectively 1-5；(2) 4.75g, 4.8g, 4.85g, 4.9g and 4.95g paraffin are weighed in the vacuum glove box of inert nitrogen atmosphere, will not Paraffin with deal is put into the test tube that numbering is respectively 1-5, and test tube is heated in glove box and maintains 100 DEG C, really Protect invisible spectro paraffin and be melted into liquid completely；(3) in glove box, No. 1 metallic potassium grain that step (1) is produced is put into No. 5 test tubes, and No. 2 metallic potassium grains are put into No. 4 In test tube, No. 3 metallic potassium grains are put into No. 3 test tubes, and No. 4 metallic potassium grains are put into No. 2 test tubes, and No. 5 metallic potassium grains are put into No. 1 examination In pipe, it is ensured that the gross mass of metallic potassium grain and paraffin is 5g in all test tubes, and metallic potassium is 1 with Quality of Paraffin Waxes ratio:99、2: 98、3:97、4:96 and 5:95；(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 100 DEG C, test tube is put into ultrasonic instrument, set super Acoustic frequency is 100kHz, is in vitro put into electric mixer, the dispersed metal potassium by the way of heating, ultrasound and stirring；(5) in glove box, well mixed liquid potassium/paraffin composite is poured into mould, cooling is compressing.
- A kind of 2. metallic sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material preparation method, it is characterised in that following steps：(1) 0.05g, 0.1g, 0.15g, 0.2g and 0.25g metallic sodium are respectively cut in the vacuum glove box of inert nitrogen atmosphere Grain, numbering are respectively 6-10；(2) 4.75g, 4.8g, 4.85g, 4.9g and 4.95g Fischer-Tropsch wax are weighed in the vacuum glove box of inert nitrogen atmosphere, will The Fischer-Tropsch wax of different deals is put into the test tube that numbering is respectively 6-10, test tube will be heated to and be maintained in glove box 200 DEG C, it is ensured that invisible spectro Fischer-Tropsch wax is melted into liquid completely；(3) in glove box, No. 6 metallic sodium grains that step (1) is produced are put into No. 10 test tubes, and No. 7 metallic potassium grains are put into No. 9 In test tube, No. 8 metallic sodium grains are put into No. 8 test tubes, and No. 9 metallic sodium grains are put into No. 7 test tubes, and No. 10 metallic sodium grains are put into No. 6 In test tube, it is ensured that the gross mass of metallic sodium grain and Fischer-Tropsch wax is 5g in all test tubes, and metallic sodium is 1 with Fischer-Tropsch wax mass ratio: 99、2:98、3:97、4:96 and 5:95；(4) in glove box, when ultrasonic instrument temperature raises and is maintained at 200 DEG C, test tube is put into ultrasonic instrument, set super Acoustic frequency is 100kHz, is in vitro put into electric mixer, the dispersed metal sodium by the way of heating, ultrasound and stirring；(5) in glove box, well mixed Liquid Sodium/Fischer-Tropsch wax composite is poured into mould, cooling is compressing.
- 3. a kind of application of metallic potassium according to claim 1/paraffin compound cryosar phase-changing energy storage material preparation method, its It is characterised by, metallic potassium/paraffin compound cryosar phase-changing energy storage material prepared by this method is led suitable for 50 DEG C -100 DEG C of low temperature The thermal energy storage in domain.
- 4. a kind of application of metallic sodium according to claim 2/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material preparation method, Characterized in that, metallic sodium/Fischer-Tropsch wax composite medium-temperature phase-changing energy storage material prepared by this method is suitable for 100 DEG C -200 DEG C The thermal energy storage in warm field.
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