CN102766441A - Composition of 24 DEG C energy storage materials - Google Patents
Composition of 24 DEG C energy storage materials Download PDFInfo
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- CN102766441A CN102766441A CN2012102812048A CN201210281204A CN102766441A CN 102766441 A CN102766441 A CN 102766441A CN 2012102812048 A CN2012102812048 A CN 2012102812048A CN 201210281204 A CN201210281204 A CN 201210281204A CN 102766441 A CN102766441 A CN 102766441A
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Abstract
The invention discloses a composition of normal temperature energy storage materials of magnesium chloride, zinc chloride and water and particularly relates to a composition of 24 DEG C energy storage materials. The composition is mainly composed of the magnesium chloride, the zinc chloride, the water, urea, cesium chloride, calcium carbonate, sodium chloride and triethanolamine, the crystallization temperature of the composition is from 23 DGE C to 25 DEG C, and the melting latent heat is larger than or equal to 260 kJ/L.
Description
Technical field
The present invention relates to a kind of 24 ℃ of energy storage material compsns, the liquid crystals temperature is 23～25 ℃.After adding the functional additive of specified proportion, overcome the cold problem of mistake of magnesium chloride, zinc chloride and water eutectic salts mixture, condensate depression is less than 2 ℃, and its latent heat of fusion can reach 260kJ/L.According to the resulting 24 ℃ of energy storage material compsns of the present invention, can be used for fields such as warmhouse booth temperature control, civilian intelligent building temperature adjustment.
Background technology
When material fusion or crystallization; The capital is with the absorption or the release of heat; For example liquid water can discharge a large amount of heat energy and transform into solid water (ice) in the time of 0 ℃; Can absorb great amount of heat energy and transform into vaporous water (water vapor) at 100 ℃ and depress liquid water at standard atmosphere, but not all material can both be followed this rule, most of materials can not change into solid-state immediately when temperature is reduced to its Tc under liquid state; But certain temperature-curable below Tc and discharge its latent heat, the difference of theoretical Tc and actual Tc promptly is referred to as condensate depression.
Some inorganic salt and water can form the eutectic salts mixture at specified proportion; But nearly all eutectic salts system all has the cold problem of serious mistake; Condensate depression severe patient even can be up to tens of degree; Cause the heat of energy storage material in time not discharge as required, limited the use of energy storage material.
The eutectic salts mixture that magnesium chloride, zinc chloride and water are formed is more satisfactory normal temperature energy storage material, but its shortcoming be condensate depression up to 10～20 ℃, even envrionment temperature is lower than 6 ℃, energy storage material also can can't release of heat because of the reason of condensate depression.
The present invention has announced the compsn that a kind of magnesium chloride, zinc chloride and water constitute, and Tc is controlled at 23～25 ℃, and latent heat of fusion can reach more than the 260kJ/L.
Crystallization is a kind of microphysics phenomenon of more complicated; Usually the initiation of crystallisation process has been full of uncertainty, like small dust, slight vibrations, all has to make the liquid that is in supercooled state produce the crystallization heat release; For further improving crystallization condition; Guarantee that energy storage material reduces the crystallization heat release with temperature automatically, the present invention adopts sodium-chlor, urea, lime carbonate as crystallisation initiator, with cesium chloride as the Tc regulator; As the pH value regulator, reduced the condensate depression of material with trolamine greatly.
Summary of the invention
The object of the present invention is to provide a kind of 24 ℃ of energy storage materials, Tc is 23～25 ℃, and the latent heat of fusion value is greater than 260kJ/L.Can be used for the local space temperature regulation, like fields such as warmhouse booth heating at night, covil construction temperature adjustments.
For realizing above-mentioned purpose of the present invention, the present invention provides a kind of compsn of energy storage material, and staple comprises MgCl
2, ZnCl
2, H
2O, CO (NH
2)
2, CsCl, CaCO
3, NaCl, N (CH
2CH
2OH)
3Deng functional additive.
MgCl in said composition
2, ZnCl
2, H
2O is main ingredient, wherein MgCl
2Be 32～40%, ZnCl
2Be 10～13%, H
2O is 33.7～52.3%, MgCl
2And ZnCl
2Mass ratio be 3.2～3.5, the ratio of other additive is following:
Energy storage material compsn provided by the present invention has been carried out Tc, condensate depression test according to the cooling curve method, and with its latent heat of fusion of DSC differential scanning calorimeter test.
Embodiment
The present invention can make those skilled in the art more comprehensively understand the present invention, but not limit the present invention in any way through the present invention of following specific embodiment more detailed description.
Embodiment 1
523 gram water are heated to 85 ℃, then with 320 gram MgCl
2, 100 the gram ZnCl
2, 15 gram CO (NH
2)
2, 18 the gram CsCl, 15 the gram CaCO
3, 8 gram NaCl, 0.5 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 24.5 ℃, and condensate depression is 2 ℃, and latent heat of fusion is 268kJ/L.
Embodiment 2
48.6 kg water are heated to 85 ℃, then with 36.3 kilograms of MgCl
2, 11 kilograms of ZnCl
2, 500 gram CO (NH
2)
2, 1 kilogram of CsCl, 2 kilograms of CaCO
3, 500 gram NaCl, 100 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 24.1 ℃, and condensate depression is 1.5 ℃, and latent heat of fusion is 270kJ/L.
Embodiment 3
67.46 gram water are heated to 85 ℃, then with 91 gram MgCl
2, 26 the gram ZnCl
2, 2.4 gram CO (NH
2)
2, 6 the gram CsCl, 5 the gram CaCO
3, 2 gram NaCl, 0.14 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 23.8 ℃, and condensate depression is 1.3 ℃, and latent heat of fusion is 274kJ/L.
Embodiment 4
1258.2 gram water are heated to 85 ℃, then with 1200 gram MgCl
2, 375 the gram ZnCl
2, 30 gram CO (NH
2)
2, 60 the gram CsCl, 57 the gram CaCO
3, 18 gram NaCl, 1.8 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 24.8 ℃, and condensate depression is 2 ℃, and latent heat of fusion is 272kJ/L.
Embodiment 5
525.84 gram water are heated to 85 ℃, then with 456 gram MgCl
2, 134.4 the gram ZnCl
2, 14.4 gram CO (NH
2)
2, 30 the gram CsCl, 27.6 the gram CaCO
3, 10.8 gram NaCl, 0.96 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 23.5 ℃, and condensate depression is 1.2 ℃, and latent heat of fusion is 278kJ/L.
Comparative Examples 1
86.46 gram water are heated to 85 ℃, then with 76 gram MgCl
2, 25.34 the gram ZnCl
2, 2 gram KCl, 1.6 gram NaCl, 3 gram CO (NH
2)
2, 4 the gram CaCO
3, 1.6 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 26.5 ℃, and condensate depression is 1.5 ℃, and latent heat of fusion is 291kJ/L.
Comparative Examples 2
1258.2 gram water are heated to 85 ℃, then with 1200 gram MgCl
2, 375 the gram ZnCl
2, 30 gram CO (NH
2)
2, 59 gram CsCl, 1.8 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test is 24.8 ℃, but FCTA temprature is 11.5 ℃, and condensate depression reaches 13.3 ℃, and latent heat of fusion is 269kJ/L.
Comparative Examples 3
1258.2 gram water are heated to 85 ℃, then with 1200 gram MgCl
2, 300 the gram ZnCl
2, 30 gram CO (NH
2)
2, 59 gram CsCl, 17 gram NaCl, 1.8 gram N (CH
2CH
2OH)
3Be added to the water successively, mixing churning time is 12 hours, stir accomplish after static depositing more than 60 hours more than 80 ℃.According to its Tc of cooling curve method test, no stable ctystallizing point, drift appears in Tc.
Through the foregoing description 1～5, the Tc of 24 ℃ of energy storage material compsns disclosed by the invention is 23～25 ℃, and in 2 ℃ of the condensate depression, latent heat of fusion is higher than 260kJ/L.Do not add CsCl in the Comparative Examples 1, Tc is greater than 25 degree; Comparative Examples 2 is not added CaCO
3, additive such as NaCl, cause energy storage material serious cold excessively, influenced the use properties of material; Comparative Examples 3 shows, has adjusted MgCl
2And ZnCl
2Mass ratio, Tc drift occurred, has not had the heat-retaining performance of constant temperature.
The above is merely preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention, so all variations that is equal to according to characteristic raw material, characterization step and the prescription of scope according to the invention all should be included within the claim of the present invention.
Claims (5)
1. 24 ℃ of energy storage material compsns of the present invention is characterized in that containing MgCl
2, ZnCl
2, H
2O, CO (NH
2)
2, CsCl, CaCO
3, NaCl, N (CH
2CH
2OH)
3Deng functional additive.
2. compsn according to claim 1 is characterised in that the main ingredient that constitutes energy storage material is by ZnCl
2, MgCl
2, H
2O constitutes.
3. energy storage material main ingredient according to claim 2 is characterized in that MgCl
2And ZnCl
2Ratio be mass ratio 3.2～3.5.
4. 24 ℃ of energy storage material compsns according to claim 1 is characterized in that MgCl
2Be 32～40%, ZnCl
2Be 10～12.5%, H
2O is 40～45%.
5. 24 ℃ of energy storage material compsns according to claim 1 is characterized in that the mass ratio of each functional additive is following:
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|---|---|---|---|
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300418A (en) * | 2018-01-17 | 2018-07-20 | 松冷（武汉）科技有限公司 | A kind of gel phase-change material and preparation method thereof, application process |
| CN109288402A (en) * | 2018-10-22 | 2019-02-01 | 武汉理工大学 | It is a kind of can in the case where non-transformer and external source self-heating system and method |
-
2012
- 2012-08-09 CN CN2012102812048A patent/CN102766441A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300418A (en) * | 2018-01-17 | 2018-07-20 | 松冷（武汉）科技有限公司 | A kind of gel phase-change material and preparation method thereof, application process |
| CN109288402A (en) * | 2018-10-22 | 2019-02-01 | 武汉理工大学 | It is a kind of can in the case where non-transformer and external source self-heating system and method |
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Application publication date: 20121107 |