CN104357022A - Inorganic phase change heat storage material and preparation method thereof - Google Patents
Inorganic phase change heat storage material and preparation method thereof Download PDFInfo
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- CN104357022A CN104357022A CN201410600301.8A CN201410600301A CN104357022A CN 104357022 A CN104357022 A CN 104357022A CN 201410600301 A CN201410600301 A CN 201410600301A CN 104357022 A CN104357022 A CN 104357022A
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- Prior art keywords
- expanded graphite
- heat accumulating
- nucleator
- crystalline hydrate
- hydrate 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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- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses an inorganic phase change heat storage material and a preparation method thereof. The heat storage material comprises 79.92 percent by mass of crystalline hydrous salt, 0.08 percent by mass of a nucleating agent and 20 percent by mass of expanded graphite. The heat storage material has the advantages that the heat absorption/release speed is higher and the shape is not changed 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, nucleator and expanded graphite 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 inorganic-phase variable 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, can keep shape invariance.
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 inorganic-phase variable heat accumulating, is characterized in that: this heat accumulating is mixed by crystalline hydrate salt, nucleator and expanded graphite and forms, and wherein crystalline hydrate salt massfraction accounts for 79.92%, and nucleator massfraction accounts for 0.08%, and expanded graphite massfraction accounts for 20%.Wherein expanded graphite has the effect strengthening the capacity of heat transmission, strengthen sizing characteristics, substitute thickening material.
The preparation method of above-mentioned inorganic hydrated salt heat accumulating, adopts following steps:
(1) expansible black lead is placed in 60 DEG C of vacuum drying ovens dry 10 hours, dried expansible black lead is placed in stainless steel vessel, be heated to 800 DEG C and expand 60 seconds, obtain expanded graphite;
(2) crystalline hydrate salt is heated to fusing point fusing, according to quality than crystalline hydrate salt: nucleator is that 1000:1 adds nucleator, and stirs;
(3) by expanded graphite in mass ratio 1:4 join in the mixture described in second step, under agitation adsorb 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:
20g expansible black lead is placed in 60 DEG C of vacuum drying ovens dry 10 hours, dried expansible black lead is placed in stainless steel vessel, be heated to 800 DEG C and expand 60 seconds, obtain expanded graphite; Get 79.92g sal glauberi and be heated to 32 DEG C of fusings, add 0.08g nucleator, stir; Add in the mixture of fusing by 20g expanded graphite, under agitation adsorb 1 hours, heat accumulating is made in cooling.The transformation temperature of this material is 32 DEG C, and latent heat of phase change is 156kJ/kg.
Claims (2)
1. an inorganic-phase variable heat accumulating, it is characterized in that: this heat accumulating is mixed by crystalline hydrate salt, nucleator and expanded graphite and forms, wherein crystalline hydrate salt massfraction accounts for 79.92%, nucleator massfraction accounts for 0.08%, expanded graphite massfraction accounts for 20%, and wherein expanded graphite has the effect strengthening the capacity of heat transmission, strengthen sizing characteristics, substitute thickening material.
2. a preparation method for inorganic-phase variable heat accumulating according to claim 1, is characterized in that it comprises the steps:
(1) expansible black lead is placed in 60 DEG C of vacuum drying ovens dry 10 hours, dried expansible black lead is placed in stainless steel vessel, be heated to 800 DEG C and expand 60 seconds, obtain expanded graphite;
(2) crystalline hydrate salt is heated to fusing point fusing, according to quality than crystalline hydrate salt: nucleator is that 1000:1 adds nucleator, and stirs;
(3) by expanded graphite in mass ratio 1:4 join in the mixture described in second step, under agitation adsorb 1 hours, the obtained heat accumulating of cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410600301.8A CN104357022A (en) | 2014-10-31 | 2014-10-31 | Inorganic phase change heat storage material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410600301.8A CN104357022A (en) | 2014-10-31 | 2014-10-31 | Inorganic phase change heat storage material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104357022A true CN104357022A (en) | 2015-02-18 |
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| CN201410600301.8A Pending CN104357022A (en) | 2014-10-31 | 2014-10-31 | Inorganic phase change heat storage material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154018A (en) * | 2015-07-16 | 2015-12-16 | 江苏七政新能源有限公司 | Inorganic composite shaped phase-change heat-storage material and preparation method thereof |
| CN107011867A (en) * | 2016-08-17 | 2017-08-04 | 北京华厚能源科技有限公司 | A kind of Inorganic phase change energy storage material |
| CN107488440A (en) * | 2017-08-11 | 2017-12-19 | 华南理工大学 | A kind of inorganic salts/expanded graphite/graphite flake block composite phase-change material of high heat conductance and preparation and application |
Citations (4)
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| 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 |
| CN103194179A (en) * | 2013-04-01 | 2013-07-10 | 河南理工大学 | Composite phase change heat storage material and preparation method thereof |
| WO2013189891A1 (en) * | 2012-06-18 | 2013-12-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Latent heat storage materials based on aluminum sulfate hydrates |
| CN103525373A (en) * | 2012-07-05 | 2014-01-22 | 中国科学院大连化学物理研究所 | Composite amorphous phase-change heat storage material and preparation method thereof |
-
2014
- 2014-10-31 CN CN201410600301.8A patent/CN104357022A/en active Pending
Patent Citations (4)
| 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 |
| WO2013189891A1 (en) * | 2012-06-18 | 2013-12-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Latent heat storage materials based on aluminum sulfate hydrates |
| CN103525373A (en) * | 2012-07-05 | 2014-01-22 | 中国科学院大连化学物理研究所 | Composite amorphous phase-change heat storage material and preparation method thereof |
| CN103194179A (en) * | 2013-04-01 | 2013-07-10 | 河南理工大学 | Composite phase change heat storage material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154018A (en) * | 2015-07-16 | 2015-12-16 | 江苏七政新能源有限公司 | Inorganic composite shaped phase-change heat-storage material and preparation method thereof |
| CN107011867A (en) * | 2016-08-17 | 2017-08-04 | 北京华厚能源科技有限公司 | A kind of Inorganic phase change energy storage material |
| CN107488440A (en) * | 2017-08-11 | 2017-12-19 | 华南理工大学 | A kind of inorganic salts/expanded graphite/graphite flake block composite phase-change material of high heat conductance and preparation and application |
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Application publication date: 20150218 |