CN104371660A - Inorganic composite hydrous salt phase change heat storage material and preparation method thereof - Google Patents
Inorganic composite hydrous salt phase change heat storage material and preparation method thereof Download PDFInfo
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- CN104371660A CN104371660A CN201410600824.2A CN201410600824A CN104371660A CN 104371660 A CN104371660 A CN 104371660A CN 201410600824 A CN201410600824 A CN 201410600824A CN 104371660 A CN104371660 A CN 104371660A
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- Prior art keywords
- nucleator
- thickening material
- heat accumulating
- crystalline hydrate
- hydrous salt
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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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses an inorganic composite hydrous salt phase change heat storage material and a preparation method thereof. The heat storage material is formed by mixing crystallized hydrous salt, a thickening agent, a nucleating agent and activated carbon, wherein the total mass fraction of crystallized hydrous salt, the thickening agent and the nucleating agent is 75%, and the mass fraction of activated carbon is 25%; the mass fraction of the thickening agent in the mixture of crystallized hydrous salt, the thickening agent and the nucleating agent is 1%, and the mass fraction of the nucleating agent in the mixture is 0.1%. The material has the advantages of higher heat absorption and release speeds and no change of appearance after phase change.
Description
one, technical field
The present invention relates to phase-change heat-storage material field, refer in particular to a kind of heat accumulating utilizing crystalline hydrate salt, thickening material, nucleator and gac compound to prepare.
two, background technology
Energy-conservation is an important topic of field of energy utilization with environmental protection, utilizes the latent heat of phase change storage power of phase-change heat-storage material to be a kind of novel power-saving technology.Phase change material, in phase transition process, absorbs the heat of surrounding environment, and when envrionment temperature reduces around, Environment release heat towards periphery, thus reach control ambient temperature and energy-conservation object.It all has wide practical use in fields such as Solar use, energy recovery, air conditioner refrigerating, building energy conservation, aerospace.
Sun power, as a kind of energy of inexpensive clean, is widely used in the middle of productive life at present, but quantitatively with on the time can not well mate and coordinate due to the supply and demand of sun power, causes mass energy to waste.As superfluous in sun power on daytime, cause sun power to waste, and night and overcast and rainy sun power not enough.The shortcoming of current heat accumulating ubiquity heat conductivility difference, the phase-change thermal storage parts therefore made, due to poor thermal conductivity, cannot give full play to the heat storage function of heat accumulating.Secondly, during heat accumulating generation solid-liquid phase change, fluid leakage problems can be caused.
In order to solve the problem, by phase-change heat-storage material and the strong base material compound of certain capacity of heat transmission, and shaping material can be added, making a kind of composite phase-change heat-storage material, improve thermal conductivity and the sizing characteristics of heat accumulating.
three, summary of the invention
The object of this invention is to provide a kind of composite inorganic hydrous salt phase transition heat accumulating, the phase-change thermal storage temperature of this heat accumulating is in the operating temperature range of solar water heater, and latent heat of phase change is higher, and heat conductivility is better, when there is solid-liquid phase change, shape invariance can be kept.
Another object of the present invention is to provide the preparation method of above-mentioned heat accumulating.
The object of the invention is to be achieved through the following technical solutions:
A kind of composite inorganic hydrous salt phase transition heat accumulating, it is characterized in that: this heat accumulating is mixed by crystalline hydrate salt, thickening material, nucleator and gac and forms, the massfraction that wherein crystalline hydrate salt, thickening material, nucleator are common accounts for 75%, quality of activated carbon mark accounts for 25%, in the mixture of above-mentioned crystalline hydrate salt, thickening material, nucleator three, thickener qualities mark accounts for 1%, and nucleator massfraction accounts for 0.1%.
The preparation method of above-mentioned composite inorganic hydrous salt phase transition heat accumulating, adopts following steps:
(1) gac is placed in 60 DEG C of vacuum drying ovens dry 5 hours, dried activity is ground powdering;
(2) crystalline hydrate salt is heated to fusing point fusing, according to quality than crystalline hydrate salt: thickening material: nucleator is that 1000:10:1 adds thickening material, nucleator, and stirs;
(3) by active carbon powder in mass ratio 1:3 join in the mixture described in second step, under agitation mixing and absorption 1 hours, the obtained heat accumulating of cooling.
The present invention has two advantages:
(1) the heat accumulating heat conductivility prepared of the present invention is higher, and exotherm rate is faster in heat absorption;
(2) heat accumulating that prepared by the present invention can not change its profile when phase transformation, can effectively prevent from revealing.
four, embodiment
Below with example, embodiments of the present invention are described further:
25g gac is placed in 60 DEG C of vacuum drying ovens dry 5 hours, dried gac is ground powdering; Get 74.175g sal glauberi and be heated to 32 DEG C of fusings, add 0.75g thickening material, add 0.075g nucleator, stir; 25g gac is added in the mixture of fusing, under agitation adsorbs 1 hours, make heat accumulating.The transformation temperature of this material is 32 DEG C, and latent heat of phase change is 146kJ/kg.
Claims (2)
1. a composite inorganic hydrous salt phase transition heat accumulating, it is characterized in that: this heat accumulating is mixed by crystalline hydrate salt, thickening material, nucleator and gac and forms, the massfraction that wherein crystalline hydrate salt, thickening material, nucleator are common accounts for 75%, quality of activated carbon mark accounts for 25%, in the mixture of above-mentioned crystalline hydrate salt, thickening material, nucleator three, thickener qualities mark accounts for 1%, and nucleator massfraction accounts for 0.1%.
2. a preparation method for composite inorganic hydrous salt phase transition heat accumulating according to claim 1, is characterized in that it comprises the steps:
(1) gac is placed in 60 DEG C of vacuum drying ovens dry 5 hours, dried activity is ground powdering;
(2) crystalline hydrate salt is heated to fusing point fusing, according to quality than crystalline hydrate salt: thickening material: nucleator is that 1000:10:1 adds thickening material, nucleator, and stirs;
(3) by active carbon powder in mass ratio 1:3 join in the mixture described in second step, under agitation mixing and absorption 1 hours, the obtained heat accumulating of cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410600824.2A CN104371660A (en) | 2014-11-01 | 2014-11-01 | Inorganic composite hydrous salt phase change heat storage material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410600824.2A CN104371660A (en) | 2014-11-01 | 2014-11-01 | Inorganic composite hydrous salt phase change heat storage material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN104371660A true CN104371660A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410600824.2A Pending CN104371660A (en) | 2014-11-01 | 2014-11-01 | Inorganic composite hydrous salt phase change heat storage material and preparation method thereof |
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| CN (1) | CN104371660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810675A (en) * | 2019-01-28 | 2019-05-28 | 华南理工大学 | A method of addition inorganic porous material generates setting to hydrous salt phase change material and adjusts phase transition temperature |
| CN111205827A (en) * | 2020-01-10 | 2020-05-29 | 北京科技大学 | Method for preventing loss of molten salt phase change heat storage material by using activated carbon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805591A (en) * | 2010-04-19 | 2010-08-18 | 中国人民解放军理工大学工程兵工程学院 | Inorganic hydrated salt expanded graphite composite phase-changing heat storage material and preparation method thereof |
| CN102212341A (en) * | 2011-04-11 | 2011-10-12 | 北京京润宝网络技术有限公司 | Sodium sulfate decahydrate phase change energy storage material compositions |
| CN103666381A (en) * | 2013-12-12 | 2014-03-26 | 江苏启能新能源材料有限公司 | Phase-change energy-storage material |
-
2014
- 2014-11-01 CN CN201410600824.2A patent/CN104371660A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805591A (en) * | 2010-04-19 | 2010-08-18 | 中国人民解放军理工大学工程兵工程学院 | Inorganic hydrated salt expanded graphite composite phase-changing heat storage material and preparation method thereof |
| CN102212341A (en) * | 2011-04-11 | 2011-10-12 | 北京京润宝网络技术有限公司 | Sodium sulfate decahydrate phase change energy storage material compositions |
| CN103666381A (en) * | 2013-12-12 | 2014-03-26 | 江苏启能新能源材料有限公司 | Phase-change energy-storage material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810675A (en) * | 2019-01-28 | 2019-05-28 | 华南理工大学 | A method of addition inorganic porous material generates setting to hydrous salt phase change material and adjusts phase transition temperature |
| CN111205827A (en) * | 2020-01-10 | 2020-05-29 | 北京科技大学 | Method for preventing loss of molten salt phase change heat storage material by using activated carbon |
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Application publication date: 20150225 |
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