CN102925115A - Phase change energy storage material for air-conditioning cooling water system - Google Patents
Phase change energy storage material for air-conditioning cooling water system Download PDFInfo
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- CN102925115A CN102925115A CN2012104321360A CN201210432136A CN102925115A CN 102925115 A CN102925115 A CN 102925115A CN 2012104321360 A CN2012104321360 A CN 2012104321360A CN 201210432136 A CN201210432136 A CN 201210432136A CN 102925115 A CN102925115 A CN 102925115A
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Abstract
The invention discloses a phase change energy storage material for an air-conditioning cooling water system. The material can be used in new buildings or existing air-conditioning cooling water pools and is capable of improving the energy storage capability of cooling water pools. Anhydrous sodium sulfate and water of 40 DEG C are prepared to a sodium sulfafe decahydrate solution in accordance with the mass ratio of 1:28, other additives are added, the mixture is placed in a sealed housing, cooled and formed after being stirred evenly, and a sodium sulfafe decahydrate phase change energy storage system is formed. The additives in the sodium sulfafe decahydrate phase change energy storage system comprises, by mass, 3% of borax, 1.5% of sodium carboxymethyl cellulose, 1% of fumed silica, 1% of sodium hexametahposphate and 4% of sodium chloride. The problems of large degree of supercooling and phase separation of the sodium sulfafe decahydrate are solved. The phase change temperature is in a range from 26 DEG C to 28 DEG C, the phase change enthalpy is large, the phase change enthalpy damping decrement is low in repeated frost melting circulation, the service life is long, and engineering application requirements are met. The phase change energy storage material is convenient for prefabrication modularity and convenient to prepare, install and transport.
Description
Technical field
[0001]The invention belongs to the phase-changing energy storage material technical field, be specifically related to a kind of phase-change accumulation energy material that is applied to air conditioning cooling water system
Material.
Background technology
Along with the high speed development of world economy, the energy shortage problem is subject to the extensive concern of various circles of society, and advanced energy storage technology is great for the Significance of Sustainable Development of the energy.Phase change energy storage technology is to utilize the characteristic of phase change material neither endothermic nor exothermic when phase changes with temporary transient no stored energy, is applied when to be needed again.Phase change energy storage technology can solve energy supply and demand unmatched contradiction on time and space well, is the effective means that promotes the energy source optimization utilization, improves energy utilization rate.
In Air-conditioning Engineering, occur sometimes owing to the reasons such as the system reform, equipment increase cause the heat storage capacity in air conditioning cooling water pond can't satisfy the phenomenon of equipment heating amount.If employing enlarges the methods such as pool volume, upgrading equipment length consuming time, investment is large, workload is also larger.Therefore, adding the suitable phase change material of transformation temperature in the air conditioning cooling water pond, is a kind of simple way that addresses this problem with this heat storage capacity that improves the pond.
Summary of the invention
The purpose of this invention is to provide a kind of phase-changing energy storage material that is applied to air conditioning cooling water system.Take anhydrous sodium sulphate+water as main heat storage material, mix and condensation after form the inorganic hydrated salt sal glauberi.There are the problems such as condensate depression is large, the separation of phase liquid, enthalpy decay in sal glauberi as phase-changing energy storage material.For overcoming the above problems, improve its phase-change characteristic, in main heat storage material, added multiple additives, pass through great many of experiments, preferred best proportioning, resulting phase-change accumulation energy system thermal storage effect is good, can be good at satisfying the user demand in air conditioning cooling water pond.
Technical scheme is as follows: preparation technology's main points of sal glauberi phase-change accumulation energy system are: the sal glauberi solution that anhydrous sodium sulphate and 38-45 ℃ water is mixed with according to the mass ratio of 1:1.28, add massfraction again and be respectively: borax 3%, Xylo-Mucine 1.5%, gas-phase silica 1%, Sodium hexametaphosphate 99 1%, sodium-chlor 4% are as additive.The water of anhydrous sodium sulphate and 40 ℃ is mixed with sal glauberi solution according to the mass ratio of 1:1.28, and again to wherein adding other additive, cooling forming in the sealed enclosure of packing into after stirring forms sal glauberi phase-change accumulation energy system.Selected additive types and the massfraction in sal glauberi phase-change accumulation energy system thereof are respectively: borax 3%, Xylo-Mucine 1.5%, gas-phase silica 1%, Sodium hexametaphosphate 99 1%, sodium-chlor 4%.
The phase-change accumulation energy system for preparing is carried out the thermal property test, and obtaining its phase transformation enthalpy is 140kJ/kg; Repeatedly thawing more than 40 times the enthalpy rate of fall-off less, can guarantee work-ing life; Transformation temperature is 26 ℃～28 ℃, and the transformation temperature of system can regulate by the adding proportion of regulating sodium-chlor, and the addition of sodium-chlor and phase change material transformation temperature be inversely proportional relation within the specific limits.
Advantage of the present invention is: adopt the method to prepare the phase-change accumulation energy system simple to operate, cheap, be fit to engineering and use, but phase-change accumulation energy system prefabricated modular is convenient to make, is installed and transportation.
Embodiment
Be applied to the phase-changing energy storage material of air conditioning cooling water system, its composition is: the sal glauberi solution that anhydrous sodium sulphate and 38-45 ℃ water is mixed with according to the mass ratio of 1:1.28, add massfraction again and be respectively: borax 3%, Xylo-Mucine 1.5%, gas-phase silica 1%, Sodium hexametaphosphate 99 1%, sodium-chlor 4% are as additive.The water of anhydrous sodium sulphate and 40 ℃ is mixed with sal glauberi solution according to the mass ratio of 1:1.28, and again to wherein adding other additive, cooling forming in the sealed enclosure of packing into after stirring forms sal glauberi phase-change accumulation energy system.Selected additive types and the massfraction in sal glauberi phase-change accumulation energy system thereof are respectively: borax 3%, Xylo-Mucine 1.5%, gas-phase silica 1%, Sodium hexametaphosphate 99 1%, sodium-chlor 4%.
According to the preferred best proportioning of experiment, to finish the preparation of phase-change accumulation energy system in the grown place and be prefabricated into module, the size of material usage and module can be determined according to the engineering particular case, the phase-change accumulation energy module for preparing is transported to the installation of engineering location gets final product.When the temperature of cooling basin reached the transformation temperature of phase transformation system, phase change material melted heat absorption, and water temperature descends gradually; When water temperature was down to the phase change material temperature of solidification, phase change material began again to solidify heat release, and water temperature slowly raises.The phase-change accumulation energy system just control water temperature in the air conditioning cooling water pond by so repeatedly heat absorption-exothermic process.
Claims (3)
1. phase-changing energy storage material that is applied to air conditioning cooling water system, it is characterized in that: its composition is: the sal glauberi solution that anhydrous sodium sulphate and 38-45 ℃ water is mixed with according to the mass ratio of 1:1.28, add massfraction again and be respectively: borax 3%, Xylo-Mucine 1.5%, gas-phase silica 1%, Sodium hexametaphosphate 99 1%, sodium-chlor 4% are as additive.
2. preparation method who is applied to the phase-changing energy storage material of air conditioning cooling water system as claimed in claim 1, it is characterized in that: the water of anhydrous sodium sulphate and 40 ℃ is mixed with sal glauberi solution according to the mass ratio of 1:1.28, again to wherein adding other additive, the cooling forming in the sealed enclosure of packing into after stirring forms sal glauberi phase-change accumulation energy system.
3. a kind of preparation method who is applied to the phase-changing energy storage material of air conditioning cooling water system according to claim 2, it is characterized in that: selected additive types and the massfraction in sal glauberi phase-change accumulation energy system thereof are respectively: borax 3%, Xylo-Mucine 1.5%, gas-phase silica 1%, Sodium hexametaphosphate 99 1%, sodium-chlor 4%.
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| CN2012104321360A CN102925115A (en) | 2012-11-02 | 2012-11-02 | Phase change energy storage material for air-conditioning cooling water system |
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| CN2012104321360A CN102925115A (en) | 2012-11-02 | 2012-11-02 | Phase change energy storage material for air-conditioning cooling water system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344146A (en) * | 2013-07-22 | 2013-10-09 | 大连国翔科技技术发展有限公司 | Low temperature step phase change heat storage and cold storage device |
| CN104610922A (en) * | 2014-12-31 | 2015-05-13 | 轻工业自动化研究所 | Phase-change material for cold storage air conditioner and preparation method of phase-change material |
| CN107418521A (en) * | 2017-07-11 | 2017-12-01 | 江苏理工学院 | A kind of ternary phase-change material for cold storage and preparation method thereof |
| CN107841292A (en) * | 2017-09-29 | 2018-03-27 | 江苏理工学院 | A kind of inorganic phase-changing material and its application |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477285A (en) * | 2010-11-23 | 2012-05-30 | 北京石油化工学院 | Microencapsulated multi-component inorganic phase-change material and preparation method thereof |
| CN102703034A (en) * | 2012-05-24 | 2012-10-03 | 范忠娟 | Nanometer particles-containing cold accumulating material for cooling pad |
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2012
- 2012-11-02 CN CN2012104321360A patent/CN102925115A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477285A (en) * | 2010-11-23 | 2012-05-30 | 北京石油化工学院 | Microencapsulated multi-component inorganic phase-change material and preparation method thereof |
| CN102703034A (en) * | 2012-05-24 | 2012-10-03 | 范忠娟 | Nanometer particles-containing cold accumulating material for cooling pad |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344146A (en) * | 2013-07-22 | 2013-10-09 | 大连国翔科技技术发展有限公司 | Low temperature step phase change heat storage and cold storage device |
| CN103344146B (en) * | 2013-07-22 | 2017-06-16 | 大连国翔科技技术发展有限公司 | Low temperature step phase-transition heat-storage cold-storage device |
| CN104610922A (en) * | 2014-12-31 | 2015-05-13 | 轻工业自动化研究所 | Phase-change material for cold storage air conditioner and preparation method of phase-change material |
| CN104610922B (en) * | 2014-12-31 | 2017-09-15 | 轻工业自动化研究所 | Phase-change material for cold accumulation air-conditioner and preparation method thereof |
| CN107418521A (en) * | 2017-07-11 | 2017-12-01 | 江苏理工学院 | A kind of ternary phase-change material for cold storage and preparation method thereof |
| CN107841292A (en) * | 2017-09-29 | 2018-03-27 | 江苏理工学院 | A kind of inorganic phase-changing material and its application |
| 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 |
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Application publication date: 20130213 |