CN105985755A - Moderate-temperature phase-change energy-storage material and production method thereof - Google Patents
Moderate-temperature phase-change energy-storage material and production method thereof Download PDFInfo
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Abstract
The invention relates to a method for producing a moderate-temperature phase-change energy-storage material. The moderate-temperature phase-change energy-storage material is composed of barium hydroxide, a nucleating agent, a thickening agent and water. The method comprises the following steps: 1) heating barium hydroxide while stirring to a certain temperature, fusing barium hydroxide at constant temperature; 2) adding the nucleating agent, heating and stirring the materials for a while, uniformly mixing the nucleating agent and barium hydroxide; 3) adding the thickening agent and water, heating and stirring the materials for a while, uniformly mixing the materials, wherein, no layering phenomenon is generated; and 4) putting a mixture obtained in the step 3) in a container for being sealed. The produced phase-change energy-storage material has the advantages of large phase-change potential heat value, stable cycle process, small supercooling degree, long material life, and simple preparation method.
Description
Technical field
The present invention relates to technical field of phase-change energy storage, a kind of middle temperature phase-changing energy storage material.
Background technology
Under the background of the current rapid economic development of China, demand and dependence to the energy all grow with each passing day.But, owing to for many years the height of the energy being exploited, it being becoming tight energy resource supply but day, energy shortage has become the bottleneck of restriction China economic development.In the case of energy shortage, China is also faced with the problem that energy utilization rate is low, and the energy consumption of per GDP is far above developed country.Therefore, improve energy utilization rate and be not only the saving to resource, also China's economic development is had great importance.
Phase-changing energy storage material is the new material of a kind of energy-conserving and environment-protective, compared with the method that non-renewable coal resources are converted into heat energy, phase-changing energy storage material can make full use of " giving up " heat like this such as solar energy and the heat of automobile engine generation, computer heat radiation, is translated into the heat being available for used by people's productive life.The most once phase-changing energy storage material by large-scale production and is used widely, and will be greatly saved Coal Energy Source, petroleum-based energy, natural gas energy resource etc., and the sustainable development of human society will be made huge contribution.
After 20 century 70 oil crisises, thermal energy storage technology is increasingly subject to pay attention in the application of industrial energy saving and new energy field.U.S. Birchenall in 1980 etc. propose to use alloy as phase-change material, it is proposed that three kinds of typicalness balance charts and the fusion entropy of bianry alloy and the computational methods of the latent heat of fusion；The Telkes of the U.S. is to Na2SO4·10H2The hydrous salt phase change materials such as O have done substantial amounts of research work, and have built up First PCM passive solar house in the world.1989, the PCM wall being soaked with 18 alkane paraffin was made in Kedl and Stoval research for the first time.Sari and Kaygusuz has carried out stability test to stearic acid, Palmic acid, tetradecanoic acid and lauric acid, cycle-index up to 910 times.In building structure, having had Many researchers traditional building material to absorb phase-change material and prepared phase-change energy-storage composite material, the report of heat storage floor prepared by the most useful PCM composite.At present, external existing many ripe phase-change material products, but at home, owing to the problems such as degree of supercooling, mutually layering, cyclical stability can not be well solved, so most research is also in laboratory stage, still there is no the industrialization technology of maturation.Therefore, develop that a kind of degree of supercooling is low, good cycling stability, the phase-changing energy storage material that is not likely to produce phase lamination are the most urgent.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that the preparation method of middle temperature phase-changing energy storage material, this material has that latent heat of phase change is big, degree of supercooling is low, cyclic process is stable, life-span length, be difficult to the advantages such as phase lamination occur.
For reaching goal of the invention, the technical solution adopted in the present invention is: a kind of middle temperature phase-changing energy storage material, it is characterised in that be achieved through the following technical solutions:
Middle temperature phase-changing energy storage material involved in the present invention, the component comprised and mass percent be:
Barium hydroxide 70-99%
Nucleator
0.5-20%
Thickening agent
0.2-10%
Water
0.2-10%。
Described nucleator is potassium hydroxide, barium chloride, potassium dihydrogen phosphate etc..
Described thickening agent is polycarboxylic acid salt, hydroxymethyl cellulose, hydroxypropyl methyl cellulose etc..Described polycarboxylic acid salt is poly (sodium aspartate), hydrolyzed maleic anhydride, sodium polyacrylate, poly-reduction sodium succinate etc..
The preparation method of a kind of middle temperature phase-changing energy storage material, it is characterised in that step is as follows:
(1) barium hydroxide being under agitation heated to uniform temperature, constant temperature makes it melt；
(2) add nucleator, heated and stirred a period of time so that it is mix homogeneously with barium hydroxide；
(3) add thickening agent and water, heated and stirred a period of time, make each component mix homogeneously, without lamination；
(4) mixture that will be obtained by step (3) loads sealing in container.
The beneficial effects are mainly as follows: (1) has higher latent heat of phase change, middle temperature phase-changing energy storage material has good energy storage effect；(2) degree of supercooling is little, be difficult to occur thinking lamination；(3) cyclic process is stable, service life is long；(4) preparation method is easy, easily operate.
Detailed description of the invention
Examples below will be described in further detail the present invention, but the present invention should not be limited only within these specific embodiments.
Embodiment 1
98g barium hydroxide is under agitation heated to 84 DEG C, after it is melted, is slowly added into 1g potassium hydroxide, continues heated and stirred 30min, be subsequently adding 0.5g hydroxypropyl methyl cellulose and 0.5g water, after being stirred under heating 1h, fill this blend in container and seal.
Embodiment 2
95g barium hydroxide is under agitation heated to 85 DEG C, after it is melted, is slowly added into 3g potassium dihydrogen phosphate, continues heated and stirred 40min, be subsequently adding 1g poly (sodium aspartate) and 1g water, after being stirred under heating 1h, fill this blend in container and seal.
Embodiment 3
90g barium hydroxide is under agitation heated to 88 DEG C, after it is melted, is slowly added into 6g barium chloride, continues heated and stirred 50min, be subsequently adding 2g hydroxymethyl cellulose and 2g water, after being stirred under heating 1.5h, fill this blend in container and seal.
Embodiment 4
85g barium hydroxide is under agitation heated to 88 DEG C, after it is melted, is slowly added into 10g barium chloride, continues heated and stirred 1h, be subsequently adding 3g hydroxymethyl cellulose and 2g water, after being stirred under heating 1.5h, fill this blend in container and seal.
Embodiment 5
80g barium hydroxide is under agitation heated to 88 DEG C, after it is melted, is slowly added into 12g barium chloride, continues heated and stirred 50min, be subsequently adding 4g hydroxymethyl cellulose and 4g water, after being stirred under heating 1.5h, fill this blend in container and seal.
Claims (5)
1. middle temperature phase-changing energy storage material and preparation method thereof, it is characterised in that include the mixture of following component and weight proportion:
Barium hydroxide
70-99%
Nucleator
0.5-20%
Thickening agent
0.2-10%
Water
0.2-10%。
Middle temperature phase-changing energy storage material the most according to claim 1 and preparation method thereof, it is characterised in that described nucleator is potassium hydroxide, barium chloride, potassium dihydrogen phosphate etc..
Middle temperature phase-changing energy storage material the most according to claim 1 and preparation method thereof, it is characterised in that described thickening agent is polycarboxylic acid salt, hydroxymethyl cellulose, hydroxypropyl methyl cellulose etc..
Middle temperature phase-changing energy storage material machine preparation method the most according to claim 3, it is characterised in that described polycarboxylic acid salt is poly (sodium aspartate), hydrolyzed maleic anhydride, sodium polyacrylate, poly-reduction sodium succinate etc..
Middle temperature phase-changing energy storage material machine preparation method the most according to claim 1, it is characterised in that in preparation process, temperature range is between 80-95 DEG C.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236278A (en) * | 2017-07-27 | 2017-10-10 | 江苏启能新能源材料有限公司 | A kind of energy storage phase change material |
| CN107828382A (en) * | 2017-11-27 | 2018-03-23 | 天津锐锟科技有限公司 | A kind of composite solid solid phase change heat storage material and preparation method thereof |
| CN108084972A (en) * | 2018-01-18 | 2018-05-29 | 上海交通大学 | Low temperature hydrated salt phase-change heat accumulation medium and its preparation and application |
| CN111721435A (en) * | 2019-03-19 | 2020-09-29 | 苏州博雅聚创新能源科技有限公司 | Temperature testing device and method for phase change energy storage material |
| CN118185590A (en) * | 2024-05-16 | 2024-06-14 | 石家庄铁道大学 | Composite phase change material and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101343530A (en) * | 2008-02-15 | 2009-01-14 | 上海海事大学 | Phase-change heat-storing material and preparation thereof |
| CN102604599A (en) * | 2012-02-20 | 2012-07-25 | 上海旭能新能源科技有限公司 | Inorganic phase change energy storage material |
| 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 |
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2015
- 2015-02-06 CN CN201510061902.0A patent/CN105985755A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343530A (en) * | 2008-02-15 | 2009-01-14 | 上海海事大学 | Phase-change heat-storing material and preparation thereof |
| CN102604599A (en) * | 2012-02-20 | 2012-07-25 | 上海旭能新能源科技有限公司 | Inorganic phase change energy storage material |
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236278A (en) * | 2017-07-27 | 2017-10-10 | 江苏启能新能源材料有限公司 | A kind of energy storage phase change material |
| CN107828382A (en) * | 2017-11-27 | 2018-03-23 | 天津锐锟科技有限公司 | A kind of composite solid solid phase change heat storage material and preparation method thereof |
| CN108084972A (en) * | 2018-01-18 | 2018-05-29 | 上海交通大学 | Low temperature hydrated salt phase-change heat accumulation medium and its preparation and application |
| CN111721435A (en) * | 2019-03-19 | 2020-09-29 | 苏州博雅聚创新能源科技有限公司 | Temperature testing device and method for phase change energy storage material |
| CN118185590A (en) * | 2024-05-16 | 2024-06-14 | 石家庄铁道大学 | Composite phase change material and preparation method and application thereof |
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