CN102746828A - Low-temperature phase-change heat storage material and preparation method thereof - Google Patents
Low-temperature phase-change heat storage material and preparation method thereof Download PDFInfo
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- CN102746828A CN102746828A CN2012102586028A CN201210258602A CN102746828A CN 102746828 A CN102746828 A CN 102746828A CN 2012102586028 A CN2012102586028 A CN 2012102586028A CN 201210258602 A CN201210258602 A CN 201210258602A CN 102746828 A CN102746828 A CN 102746828A
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Abstract
The invention provides a low-temperature phase-change heat storage material and a preparation method thereof. The heat storage material comprises the following three components in percentage by weight: 90-92% of sodium acetate trihydrate, 4.5-5.8% of sodium phosphate dibasic dodecahydrate and 2.2-4.2% of gelatin. The preparation method comprises the following steps of: grinding all the three components into 30-50 meshes, uniformly mixing the three powders, heating the mixture in a 69-72 DEG C water bath so that all components are fully melted to become a colloidal liquid, uniformly agitating the colloidal liquid, injecting the colloidal liquid into a container, cooling the colloidal liquid into room temperature and sealing the container, wherein the injection volume of the colloidal liquid is 88-90% of the volume of the container. The low-temperature phase-change heat storage material has fewer additive varieties, high stability, great latent heat of phase change and moderate crystallization temperature, and the degree of supercooling does not exceed 2 DEG C. The phase-change heat storage material becomes a colloidal liquid when melted, the phase separation phenomenon is avoided, the preparation process is simple, and the phase-change heat storage material is easy to package and convenient to produce.
Description
Technical field
The present invention relates to a kind of heat-storing material that is used for low temperature phase change and preparation method thereof, belong to the heat-storing material technical field.
Background technology
Use heat storage technology and not only can regulate the energy imbalance between supply and demand, realize " peak load shifting " of EPS, the equilibrium energy system can also make full use of industrial exhaust heat, used heat, improves capacity usage ratio, reduces production costs.At present, heat storage technology mainly contains sensible heat accumulation of heat, phase-transition heat-storage and three kinds of modes of reversible chemical reaction accumulation of heat; Compare with all the other two kinds of heat storage types; Phase-transition heat-storage has advantages such as thermal storage density is big, the accumulation of heat volume is little, exothermic temperature is stable; Therefore phase-transition heat-storage has received people's extensive attention, and the phase-transition heat-storage technology has been widely used in fields such as sun power utilization, industrial waste heat utilization, energy-saving and environmental protection, air-conditioning, heat supply.
Inorganic hydrated salt is as material for storing heat of phase change in low temperature commonly used; Have that thermal storage density is big, good heat conductivity (comparing), nontoxicity, non-corrosiveness with the organic phase-change heat-storing material, and be chemical by-product, advantage such as cheap and easy to get mostly, be prone to produce problems such as cold-peace is separated but also exist; Through after the recycling of certain number of times; Its heat storage capacity obviously reduces, and has shortened its work-ing life greatly, has directly influenced the widespread use of inorganic hydrated salt as phase change heat storage material.
Chinese patent document CN1357593A discloses " a kind of New-type phase change heat-storing material "; This material for storing heat of phase change in low temperature is made up of major ingredient sodium-acetate, sodium phosphate, yellow soda ash and atlapulgite; The weight percent of sodium-acetate is that the weight percent of 85-90%, sodium phosphate is that the weight percent of 3-5%, yellow soda ash is 3-5%; Surplus is an atlapulgite, its preparation technology for earlier with above-mentioned materials prepare in proportion, levigate, mix thoroughly, pour in the container after the fusion and use.
Above-mentioned heat-storing material additive is more, and cost is high, the preparation process is complicated, and condensate depression is higher than 4 ℃.
Summary of the invention
Existing deficiency when the present invention is directed to inorganic hydrated salt as material for storing heat of phase change in low temperature proposes a kind of stable performance, material for storing heat of phase change in low temperature that condensate depression is little, and a kind of preparation method of this heat-storing material is provided simultaneously, and this method is simple and convenient.
Material for storing heat of phase change in low temperature of the present invention; Be made up of sodium acetate trihydrate (
), disodium hydrogen phosphate (
) and gelatin, the weight percent of three kinds of components is respectively 90%-92%, 4.5%-5.8% and 2.2%-4.2%.
Above-mentioned material for storing heat of phase change in low temperature is major ingredient with the sodium acetate trihydrate, is additive with disodium hydrogen phosphate and gelatin, and disodium hydrogen phosphate is a nucleator, mainly works to eliminate condensate depression; Gelatin is a kind of good thickening material, has good effect to suppressing the phenomenon of phase separation of sodium acetate trihydrate in phase transition process.The component of this material and weight proportion thereof obtain through testing repeatedly, and additive types is few, and cost is low, and heat storage capacity is strong.
The preparation method of above-mentioned material for storing heat of phase change in low temperature is:
The ratio that is respectively 90%-92%, 4.5%-5.8% and 2.2%-4.2% is by weight percentage got sodium acetate trihydrate, disodium hydrogen phosphate and gelatin; Three kinds of components all are ground to 30 orders-50 order, mix, mixture is heated in 69 ℃ of-72 ℃ of water-baths; Each component is melted fully; Become colloidal liquid, be injected in the container after colloidal liquid is stirred, the volume of injection is the 88%-90% of vessel volume; Retain the space of 10%-12% in the container, treat that colloidal liquid is cooled to sealed vessel after the room temperature.During use, container directly uses with heat-storing material, need not open container.
Material for storing heat of phase change in low temperature additive types of the present invention is few, and is high through the stability of this material of experiment proof repeatedly, latent heat of phase change big (being about 240kJ/kg); Tc moderate (52～53 ℃); Condensate depression is no more than 2 ℃, is colloidal liquid during this phase change heat storage material fusing, has avoided phenomenon of phase separation; Simple, the easy encapsulation of preparation process, it is convenient to produce.
Embodiment
Embodiment 1
90%, 5.8% and 4.2% the ratio of being respectively by weight percentage takes by weighing sodium acetate trihydrate, disodium hydrogen phosphate and gelatin, and three kinds of components all are ground to 30 orders, mixes; Mixture is heated in 69 ℃ of water-baths, each component is melted fully, become colloidal liquid; Be injected in the container after colloidal liquid stirred; The volume that injects is 88% of a vessel volume, retains 12% space in the container, treats that colloidal liquid is cooled to sealed vessel after the room temperature.
Material for storing heat of phase change in low temperature latent heat through advance copy embodiment preparation is 238kJ/kg, and Tc is 52 ℃, and condensate depression is 1.5 ℃.
Embodiment 2
91%, 5% and 4% the ratio of being respectively by weight percentage takes by weighing sodium acetate trihydrate, disodium hydrogen phosphate and gelatin, and three kinds of components all are ground to 40 orders, mixes; Mixture is heated in 70 ℃ of water-baths, each component is melted fully, become colloidal liquid; Be injected in the container after colloidal liquid stirred; The volume that injects is 89% of a vessel volume, retains 11% space in the container, treats that colloidal liquid is cooled to sealed vessel after the room temperature.
Material for storing heat of phase change in low temperature latent heat through advance copy embodiment preparation is 240kJ/kg, and Tc is 53 ℃, and condensate depression is 0.8 ℃.
Embodiment 3
92%, 4.5% and 3.5% the ratio of being respectively by weight percentage takes by weighing sodium acetate trihydrate, disodium hydrogen phosphate and gelatin, and three kinds of components all are ground to 50 orders, mixes; Mixture is heated in 72 ℃ of water-baths, each component is melted fully, become colloidal liquid; Be injected in the container after colloidal liquid stirred; The volume that injects is 90% of a vessel volume, retains 10% space in the container, treats that colloidal liquid is cooled to sealed vessel after the room temperature.
Material for storing heat of phase change in low temperature latent heat through advance copy embodiment preparation is 243kJ/kg, and Tc is 52 ℃, and condensate depression is 1.0 ℃.
Embodiment 4
92%, 5.8% and 2.2% the ratio of being respectively by weight percentage takes by weighing sodium acetate trihydrate, disodium hydrogen phosphate and gelatin, and three kinds of components all are ground to 50 orders, mixes; Mixture is heated in 71 ℃ of water-baths, each component is melted fully, become colloidal liquid; Be injected in the container after colloidal liquid stirred; The volume that injects is 90% of a vessel volume, retains 10% space in the container, treats that colloidal liquid is cooled to sealed vessel after the room temperature.
Material for storing heat of phase change in low temperature latent heat through advance copy embodiment preparation is 241kJ/kg, and Tc is 52 ℃, and condensate depression is 1.2 ℃.
Claims (2)
1. material for storing heat of phase change in low temperature, it is characterized in that: be made up of sodium acetate trihydrate, disodium hydrogen phosphate and gelatin, the weight percent of three kinds of components is respectively 90%-92%, 4.5%-5.8% and 2.2%-4.2%.
2. the preparation method of the said material for storing heat of phase change in low temperature of claim 1 is characterized in that:
The ratio that is respectively 90%-92%, 4.5%-5.8% and 2.2%-4.2% is by weight percentage got sodium acetate trihydrate, disodium hydrogen phosphate and gelatin; Three kinds of components all are ground to 30 orders-50 order, mix, mixture is heated in 69 ℃ of-72 ℃ of water-baths; Each component is melted fully; Become colloidal liquid, be injected in the container after colloidal liquid is stirred, the volume of injection is the 88%-90% of vessel volume; Retain the space of 10%-12% in the container, treat that colloidal liquid is cooled to sealed vessel after the room temperature.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559937A (en) * | 2014-12-31 | 2015-04-29 | 轻工业自动化研究所 | Energy storage agent for energy-saving phase-change materials, and manufacturing method and production equipment of energy storage agent |
| WO2015085761A1 (en) * | 2013-12-12 | 2015-06-18 | 江苏启能新能源材料有限公司 | Phase change energy storage material |
| CN104791874A (en) * | 2015-03-13 | 2015-07-22 | 刘长林 | Energy-saving and environment-friendly transformed heating system for safe non-pressure operation of boilers |
| CN105131912A (en) * | 2015-10-26 | 2015-12-09 | 中国科学院青海盐湖研究所 | Inorganic phase change energy storage material and preparation method thereof |
| CN105154025A (en) * | 2015-10-26 | 2015-12-16 | 中国科学院青海盐湖研究所 | Inorganic phase change energy storage material and preparation method thereof |
| CN105238362A (en) * | 2015-10-26 | 2016-01-13 | 中国科学院青海盐湖研究所 | Inorganic phase-change energy-storage material and preparation method thereof |
| CN108485611A (en) * | 2018-06-12 | 2018-09-04 | 江苏星云物联科技有限公司 | A kind of phase change heat storage material and preparation method thereof |
| CN111623406A (en) * | 2020-04-15 | 2020-09-04 | 北京工业大学 | Outdoor portable phase change heat storage heating device in severe cold environment |
| CN111635740A (en) * | 2020-06-29 | 2020-09-08 | 国网河北省电力有限公司电力科学研究院 | Phase-change heat storage material and heat storage device |
| CN112480876A (en) * | 2020-12-24 | 2021-03-12 | 西北大学 | Phase change heat storage material compounded by sodium acetate trihydrate and disodium hydrogen phosphate dodecahydrate |
| CN113881405A (en) * | 2021-10-19 | 2022-01-04 | 佛山市顺德区美的洗涤电器制造有限公司 | Phase-change material composition, phase-change material, and preparation method and application thereof |
| CN115449351A (en) * | 2022-10-11 | 2022-12-09 | 湖南工程学院 | Hydrated salt composite phase-change material and preparation method and application thereof |
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| CN1695787A (en) * | 2005-03-29 | 2005-11-16 | 东华大学 | Synthesizing inorganic microcapsules of storing energy through phase change by using method of solution precipitation polymerization |
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- 2012-07-25 CN CN2012102586028A patent/CN102746828A/en active Pending
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| CN1695787A (en) * | 2005-03-29 | 2005-11-16 | 东华大学 | Synthesizing inorganic microcapsules of storing energy through phase change by using method of solution precipitation polymerization |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015085761A1 (en) * | 2013-12-12 | 2015-06-18 | 江苏启能新能源材料有限公司 | Phase change energy storage material |
| CN104559937B (en) * | 2014-12-31 | 2017-08-11 | 轻工业自动化研究所 | Energy-saving phase-change material energy storage agent and preparation method thereof and production equipment |
| CN104559937A (en) * | 2014-12-31 | 2015-04-29 | 轻工业自动化研究所 | Energy storage agent for energy-saving phase-change materials, and manufacturing method and production equipment of energy storage agent |
| CN104791874A (en) * | 2015-03-13 | 2015-07-22 | 刘长林 | Energy-saving and environment-friendly transformed heating system for safe non-pressure operation of boilers |
| CN105131912A (en) * | 2015-10-26 | 2015-12-09 | 中国科学院青海盐湖研究所 | Inorganic phase change energy storage material and preparation method thereof |
| CN105238362A (en) * | 2015-10-26 | 2016-01-13 | 中国科学院青海盐湖研究所 | Inorganic phase-change energy-storage material and preparation method thereof |
| CN105154025A (en) * | 2015-10-26 | 2015-12-16 | 中国科学院青海盐湖研究所 | Inorganic phase change energy storage material and preparation method thereof |
| CN108485611A (en) * | 2018-06-12 | 2018-09-04 | 江苏星云物联科技有限公司 | A kind of phase change heat storage material and preparation method thereof |
| CN111623406A (en) * | 2020-04-15 | 2020-09-04 | 北京工业大学 | Outdoor portable phase change heat storage heating device in severe cold environment |
| CN111635740A (en) * | 2020-06-29 | 2020-09-08 | 国网河北省电力有限公司电力科学研究院 | Phase-change heat storage material and heat storage device |
| CN112480876A (en) * | 2020-12-24 | 2021-03-12 | 西北大学 | Phase change heat storage material compounded by sodium acetate trihydrate and disodium hydrogen phosphate dodecahydrate |
| CN113881405A (en) * | 2021-10-19 | 2022-01-04 | 佛山市顺德区美的洗涤电器制造有限公司 | Phase-change material composition, phase-change material, and preparation method and application thereof |
| CN115449351A (en) * | 2022-10-11 | 2022-12-09 | 湖南工程学院 | Hydrated salt composite phase-change material and preparation method and application thereof |
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Application publication date: 20121024 |