CN105154023A - Phase change cold-accumulation material and preparation method thereof - Google Patents
Phase change cold-accumulation material and preparation method thereof Download PDFInfo
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- CN105154023A CN105154023A CN201510636871.7A CN201510636871A CN105154023A CN 105154023 A CN105154023 A CN 105154023A CN 201510636871 A CN201510636871 A CN 201510636871A CN 105154023 A CN105154023 A CN 105154023A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention discloses a phase change cold-accumulation material and a preparation method thereof. The phase change cold-accumulation material is prepared from, by mass, 50-60% of sodium sulfafe decahydrate, 10-15% of sodium bromide, 2-5% of ammonium chloride, 3% of aluminum oxide, 1-3% of sodium borate, 1-2% of boric acid, 4% of nanometer silicon dioxide, 2% of nanometer magnesium silicate and the balance deionized water. The preparation method comprises the steps of sequentially adding the sodium sulfafe decahydrate, the sodium bromide, the ammonium chloride, the sodium borate and the boric acid into a heating tank provided with a blender, conducting mixing and uniform stirring, controlling the mixture temperature within the range from 60 DEG C to 70 DEG C, conducting stirring till the mixture is molten completely, adding the aluminum oxide, the nanometer silicon dioxide and the nanometer magnesium silicate in the high-speed stirring process, replenishing the balance deionized water, stirring the mixture uniform, preserving the temperature for one hour at the temperature of 40 DEG C, cooling the mixture to be room temperature, and obtaining the uniform plasty fluid form phase change cold-accumulate material. Compared with the prior art, the phase change cold-accumulate material has the advantages of being high in potential heat value, stable in system, few in phase-change temperature hysteresis phenomenon, low in repeated cycling degradation and the like, raw materials are easy to obtain, the production is easy to conduct, the safety and nontoxicity are achieved, and the material has practical value in the field of heating, ventilation and air conditioning (HVAC).
Description
Technical field
The present invention relates to Cool Storage Technology field, be specifically related to a kind of phase-change material for cold storage and preparation method thereof.
Background technology
Phase change cold-storage technology is at Solar use, civilian and industrial freezing and refrigeration, so that process industrial application that is energy-conservation, Regional Energy co-feeding system aspect is wide, especially for air conditioning system (HVAC), utilize transformation temperature can replace the existing water cold storage of part and ice storage technology in the phase change cold-storage technology of 8 DEG C ~ 11 DEG C of scopes, while making full use of peak-trough electricity, significantly improve screw refrigeration unit cycle performance coefficient (COP).Inorganic-phase variable cool storage material, because price is low, raw material is easy to get, be Large Copacity storage the most promising cold material, but existing inorganic-phase variable cool storage material often occurs that the problems affect such as cold storage capacity is on the low side, layering, irreversible crystallization use.Patent USP4689164 and EP0620261 etc. also report and adopt soluble inorganic salt to be the transformation temperature that fusing point control agent reduces sal glauberi; Chinese patent CN101760182A etc. reports the sal glauberi phase change cold-storage system that employing Xylo-Mucine is thickening material, add Xylo-Mucine and cause transformation temperature hysteresis effect comparatively large, and easily corruption is degraded, cannot life-time service.
Summary of the invention
The object of the invention is to overcome prior art Shortcomings, cool storage material providing one can undergo phase transition 8 ~ 11 DEG C of scopes and preparation method thereof.
The object of the invention is to be achieved through the following technical solutions:
The present invention relates to a kind of phase-change material for cold storage, comprise each component of following mass percentage content:
Sal glauberi 50 ~ 60%,
Sodium Bromide 10 ~ 15%,
Ammonium chloride 2 ~ 5%,
Aluminum oxide 3%,
Borax 1 ~ 3%,
Boric acid 1 ~ 2%,
Nano silicon 4%,
Nanometer lithium magnesium silicate 2%,
The deionized water of surplus.
Preferably, described nano silicon is hydrophilic nano aerosil, and particle diameter is 10 ~ 30nm.
Preferably, the particle diameter of described nanometer lithium magnesium silicate is 20 ~ 50nm.
The invention still further relates to a kind of preparation method of aforesaid phase-change material for cold storage, comprise the steps:
A, sal glauberi, Sodium Bromide, ammonium chloride, borax, boric acid to be joined successively in the heating tank of belt stirrer, mix and stir, the temperature controlling mixture, at 60 ~ 70 DEG C, is stirred to and melts completely.
B, add aluminum oxide, nano silicon and nanometer lithium magnesium silicate under high velocity agitation, supplement balance deionized water, stir, be incubated 40 DEG C one hour, be cooled to room temperature and obtain uniform lotion, obtain described phase-change material for cold storage.
Preferably, in step B, the speed of described high-speed stirring is 3000 ~ 4000rpm.
Compared with prior art, the beneficial effect that the present invention has is:
1, the present invention's mode of adopting sal glauberi, Sodium Bromide, ammonium chloride composite, ammonium chloride consumption is less, and potential of hydrogen, close to neutrality, inhibits the releasing of ammonia; Adopt the synergistic thickening effect of superfine silicon dioxide and nanometer lithium magnesium silicate, at room temperature in paste, there is not degraded, reduce and be separated and transformation temperature hysteresis, and effectively increase the stability of system.
2, phase-change material for cold storage transformation temperature of the present invention is about 8 ~ 11 DEG C of scopes, potential heat value is 200-240KJ/kg, the advantages such as potential heat value is high, stable system, transformation temperature hysteresis are little, iterative cycles decay is low, raw material is easy to get, easy production, safety non-toxic, has practical value in air conditioning system (HVAC) field.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 be the 200g phase-change material for cold storage of various embodiments of the present invention at cooling environment :-6 DEG C, room temperature environment: the temperature lift-down curve contrast schematic diagram of 29 ~ 30 DEG C: wherein, A is embodiment 1, B be embodiment 2, C be embodiment 3, D is envrionment temperature.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, this all belongs to protection scope of the present invention.
Embodiment 1
By 600kg sal glauberi, 150kg Sodium Bromide, 50kg ammonium chloride, 15kg borax, 20kg boric acid is added in heating tank successively, stirred until all melt after melting gradually, low whipping speed is add under 4000rpm slowly to add aluminum oxide 30kg, nanometer lithium magnesium silicate 20kg, nano silicon 40kg, supplement 75kg deionized water, stir, be incubated 40 DEG C after one hour, naturally cool to room temperature and obtain uniform lotion, obtain described phase-change material for cold storage, latent heat of phase change is 215KJ/kg, cooling transition temperature range is 8.2 ~ 9.1 DEG C, intensification transition temperature range is 9.3 ~ 10.7 DEG C.
Embodiment 2
By 500kg sal glauberi, 150kg Sodium Bromide, 40kg ammonium chloride, 10kg borax, 15kg boric acid is added in heating tank successively, stirred until all melt after melting gradually, low whipping speed is add under 3000rpm slowly to add aluminum oxide 30kg, nanometer lithium magnesium silicate 20kg, nano silicon 40kg, supplement 195kg ionized water, stir, be incubated 40 DEG C after one hour, naturally cool to room temperature and obtain uniform lotion, obtain described phase-change material for cold storage, latent heat of phase change is 222KJ/kg, cooling transition temperature range is 7.2 ~ 8.3 DEG C, intensification transition temperature range is 8.2 ~ 10.5 DEG C.
Embodiment 3
By 550kg sal glauberi, 130kg Sodium Bromide, 20kg ammonium chloride, 30kg borax, 10kg boric acid joins in heating tank successively, and the temperature controlling mixture is at about 60 ~ 70 DEG C, be stirred to and melt completely, low whipping speed is add under 3500rpm slowly to add 30kg aluminum oxide, 20kg nanometer lithium magnesium silicate, 40kg nano silicon, supplement 170kg deionized water, stir, be incubated 40 DEG C after one hour, naturally cool to room temperature and obtain uniform lotion, obtain described phase-change material for cold storage, latent heat of phase change is 201KJ/kg, cooling transition temperature range is 6.9 ~ 8.1 DEG C, intensification transition temperature range is 8.0 ~ 9.8 DEG C.
The phase-change material for cold storage at room temperature observing above-described embodiment 1 ~ 3 is paste, transformation temperature is about 8 ~ 11 DEG C of scopes, meet the requirement of air conditioning system (HVAC) field application, potential heat value is 200 ~ 240KJ/kg, the advantages such as the decay of stable system, iterative cycles is low, raw material is easy to get, and easily produces, safety non-toxic, has practical value in air conditioning system (HVAC) field.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, do not affect flesh and blood of the present invention.
Claims (5)
1. a phase-change material for cold storage, is characterized in that, described phase-change material for cold storage is made up of each component of following mass percentage content:
Sal glauberi 50 ~ 60%,
Sodium Bromide 10 ~ 15%,
Ammonium chloride 2 ~ 5%,
Aluminum oxide 3%,
Borax 1 ~ 3%,
Boric acid 1 ~ 2%,
Nano silicon 4%,
Nanometer lithium magnesium silicate 2%,
The deionized water of surplus.
2. phase-change material for cold storage according to claim 1, is characterized in that, described nano silicon is hydrophilic nano gaseous oxidation silicon, and particle diameter is 10 ~ 30nm.
3. phase-change material for cold storage according to claim 1, is characterized in that, the particle diameter of described nanometer lithium magnesium silicate is 20 ~ 50nm.
4. the preparation method of phase-change material for cold storage according to claim 1, is characterized in that, comprises the steps:
A, sal glauberi, Sodium Bromide, ammonium chloride, borax, boric acid to be added in heating tank successively, to be stirred until all melt after melting gradually;
B, add aluminum oxide, nano silicon and nanometer lithium magnesium silicate under high velocity agitation, supplement balance deionized water, stir, be incubated 40 DEG C one hour, be cooled to room temperature and obtain uniform paste phase-change material for cold storage.
5. the preparation method of phase-change material for cold storage according to claim 4, is characterized in that, in step B, stirring velocity controls 3000 ~ 4000rpm.
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| CN201510636871.7A CN105154023A (en) | 2015-09-29 | 2015-09-29 | Phase change cold-accumulation material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047304A (en) * | 2016-06-28 | 2016-10-26 | 周开雄 | Phase change heat storage material and preparation method thereof |
| CN107739595A (en) * | 2017-08-30 | 2018-02-27 | 江苏理工学院 | A kind of inorganic phase-changing material for air conditioner cold accumulation and preparation method thereof |
| CN108624297A (en) * | 2018-07-15 | 2018-10-09 | 北京电管家科技股份有限公司 | The inorganic phase-changing material and preparation method thereof that phase transition temperature is 30 DEG C |
| CN109504352A (en) * | 2018-12-29 | 2019-03-22 | 北京华厚能源科技有限公司 | 8 ~ 10 DEG C of composite phase change energy-storing cool storage materials of one kind and preparation method thereof |
| CN111320969A (en) * | 2020-04-03 | 2020-06-23 | 新奥（内蒙古）石墨烯材料有限公司 | Phase change cold accumulation compound and preparation method thereof |
| CN113652209A (en) * | 2021-09-27 | 2021-11-16 | 合肥太空方舟科技有限公司 | Phase-change cold storage material capable of controlling phase-change temperature and preparation method thereof |
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| CN102443380A (en) * | 2011-09-20 | 2012-05-09 | 中国科学院广州能源研究所 | High temperature phase transition cool storage agent |
| CN102703034A (en) * | 2012-05-24 | 2012-10-03 | 范忠娟 | Nanometer particles-containing cold accumulating material for cooling pad |
| CN103074039A (en) * | 2012-12-29 | 2013-05-01 | 王洪周 | Phase-changed chemical heat-absorbing material |
| CN103242806A (en) * | 2013-05-08 | 2013-08-14 | 杭州鲁尔能源科技有限公司 | Inorganic salt phase-change cold accumulation material |
| CN104887011A (en) * | 2015-05-29 | 2015-09-09 | 北京宇田相变储能科技有限公司 | Phase transition temperature adjusting system and phase transition temperature adjusting cup |
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2015
- 2015-09-29 CN CN201510636871.7A patent/CN105154023A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102443380A (en) * | 2011-09-20 | 2012-05-09 | 中国科学院广州能源研究所 | High temperature phase transition cool storage agent |
| CN102703034A (en) * | 2012-05-24 | 2012-10-03 | 范忠娟 | Nanometer particles-containing cold accumulating material for cooling pad |
| CN103074039A (en) * | 2012-12-29 | 2013-05-01 | 王洪周 | Phase-changed chemical heat-absorbing material |
| CN103242806A (en) * | 2013-05-08 | 2013-08-14 | 杭州鲁尔能源科技有限公司 | Inorganic salt phase-change cold accumulation material |
| CN104887011A (en) * | 2015-05-29 | 2015-09-09 | 北京宇田相变储能科技有限公司 | Phase transition temperature adjusting system and phase transition temperature adjusting cup |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047304A (en) * | 2016-06-28 | 2016-10-26 | 周开雄 | Phase change heat storage material and preparation method thereof |
| CN107739595A (en) * | 2017-08-30 | 2018-02-27 | 江苏理工学院 | A kind of inorganic phase-changing material for air conditioner cold accumulation and preparation method thereof |
| CN108624297A (en) * | 2018-07-15 | 2018-10-09 | 北京电管家科技股份有限公司 | The inorganic phase-changing material and preparation method thereof that phase transition temperature is 30 DEG C |
| CN109504352A (en) * | 2018-12-29 | 2019-03-22 | 北京华厚能源科技有限公司 | 8 ~ 10 DEG C of composite phase change energy-storing cool storage materials of one kind and preparation method thereof |
| CN111320969A (en) * | 2020-04-03 | 2020-06-23 | 新奥（内蒙古）石墨烯材料有限公司 | Phase change cold accumulation compound and preparation method thereof |
| CN113652209A (en) * | 2021-09-27 | 2021-11-16 | 合肥太空方舟科技有限公司 | Phase-change cold storage material capable of controlling phase-change temperature and preparation method thereof |
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Application publication date: 20151216 |