CN101525530A - Low temperature phase change cold storage nanofluid and preparation method thereof - Google Patents
Low temperature phase change cold storage nanofluid and preparation method thereof Download PDFInfo
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- CN101525530A CN101525530A CN200910115140A CN200910115140A CN101525530A CN 101525530 A CN101525530 A CN 101525530A CN 200910115140 A CN200910115140 A CN 200910115140A CN 200910115140 A CN200910115140 A CN 200910115140A CN 101525530 A CN101525530 A CN 101525530A
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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
Abstract
The invention relates to a low temperature phase change cold storage nanofluid and a preparation method thereof. The nanofluid is characterized by comprising the following components: 100 parts of salt eutectic aqueous solution with the mass concentration of 10-22.5%, 0.167-1.13 parts of metal nano particles or metal nano oxide particles and 0.2-0.5 part of a dispersant, and the part thereof is in volume unit. The preparation method comprises the following steps: mixing the 100 parts of salt eutectic aqueous solution with the mass concentration of 10-22.5% with the 0.167-1.13 parts of metal nano particles or metal nano oxide particles and evenly stirring, adding the 0.2-0.5 part of the dispersant and stirring, and then performing supersonic vibration for more than half an hour to obtain stable suspension nanofluid. As a nanofluid technique is employed to improve heat transfer characteristic of a traditional cold storage working medium, which can effectively reduce heat transfer temperature difference between a refrigerant and a cold storage working medium, improve nucleation supercooling degree, increase cold storage efficiency and reduce volume of a heat exchanger. The cold storage nanofluid has significant influence on air conditioning cold storage industry and positive impact on effective energy utilization.
Description
Technical field:
The present invention relates to field of material preparation, relate in particular to low temperature phase change cold storage nanofluid and preparation method thereof.
Background technology:
Cold-storage is the effective means that realizes the electrical network peak load shifting, and the temperature of industrial cold-storage is generally all below 0 ℃.Under present technical qualification, the difficulty of industrial cold-storage is: 1. along with the reduction of cold-storage temperature, refrigerator efficient also reduces significantly, and the energy consumption of cold-storage apparatus is increased; 2. have surfusion during phase change cold-storage and take place, the cold-storage of this moment only is to carry out in the sensible heat mode, can't store a large amount of colds, thereby reduces the efficient of cold-storage; 3. the thermal conductivity that the phase change cold-storage medium is lower can not satisfy the requirement of little temperature difference enhancement of heat transfer.At present, the measure of cold-storage apparatus enhancement of heat transfer is mainly started with from enhanced heat exchange surface, manufacturing process, but is subjected to the restriction of cold-storage apparatus structure and manufacturing cost.
Summary of the invention:
The object of the present invention is to provide low temperature phase change cold storage nanofluid of a kind of high thermal conductivity coefficient, low nucleation condensate depression, high cold-storage efficient and preparation method thereof.
In order to achieve the above object, the present invention realizes like this, it is a kind of low temperature phase change cold storage nanofluid, it is characterized in that it comprises that mass concentration is 100 parts of the eutectic salts aqueous solution of 10-22.5%, metal nanoparticle or metal oxide nanoparticles 0.167-1.13 part and dispersion agent 0.2-0.5 part, its umber is a volume unit.
The described eutectic salts aqueous solution is the aqueous solution such as bariumchloride or Repone K.
Described metal oxide nanoparticles material is the titanium dioxide TiO of particle diameter less than 100nm
2Deng oxide compound, metal nano particle material is the metals such as copper of particle diameter less than 100nm.
Described dispersion agent is the composite dispersing agent of tripoly phosphate sodium STPP and trolamine, and their weight ratio is 1: 1.
The preparation method of low temperature phase change cold storage nanofluid, it is characterized in that: be that the metal nanoparticle of the eutectic salts aqueous solution and 0.167-1.13 part of 10-22.5% or metal oxide nanoparticles mix and stir with 100 parts mass concentrations, the dispersion agent that adds 0.2-0.5 part more therein stirs, and carries out then making suspending stabilized nano-fluid more than ultrasonic vibration half hour.
Purpose of the present invention advantage compared with prior art is, because the heat transfer characteristic of traditional cold-storage working substance that it has utilized the nano-fluid skill upgrading, not only can effectively reduce the heat transfer temperature difference between refrigeration agent and the cold-storage working substance, improve the nucleation condensate depression, improve cold-storage efficient, also can reduce the volume of heat exchanger simultaneously.To bring great effect for the air conditioner cold accumulation industry, effective utilization also has the front to benefit to the energy.
Embodiment
Below in conjunction with embodiment the present invention is done further detailed description:
Embodiment one
Preparation TiO
2-BaCl
2-H
2The O cold storage nanofluid is 1.13% TiO with volume fraction
2Nanoparticle and mass concentration are 100 parts of BaCl of 22.5%
2Aqueous solution is in order to allow TiO
2Nanoparticle is suspended in BaCl uniformly
2In the aqueous solution, select the composite dispersing agent of tripoly phosphate sodium STPP and trolamine for use, the volume fraction of dispersion agent is 0.5%, carries out ultrasonic vibration then and makes suspending stabilized nano-fluid in 40 minutes.Because the big several magnitude of thermal conductivity ratio liquid of solids, such as, the thermal conductivity of copper is 700 times of water under the room temperature, is 3000 times of machine oil, metal oxide such as Al
2O
3Thermal conductivity also than the big manyfold of single liquid.Therefore, metal or non-metal powder can be doped in the cold-storage working substance improving its heat transfer character, and system wear can not appear, pressure drop increase and particle wadding poly-with problem such as precipitation.In liquid, add nanoparticle, can significantly increase the thermal conductivity of liquid, improve the heat transfer property of heat exchange system; And because the small-size effect of nanoparticle, its behavior approaches fluid molecule, can not resemble millimeter or micro-size particles and easily produce bad results such as wearing and tearing or obstruction, and formed nano-fluid compares BaCl
2Aqueous solution thermal conductivity increases by 16.74%, and the nucleation condensate depression has reduced by 84.92%.
Embodiment two
Preparation Cu-KCl-H
2The O cold storage nanofluid, with volume fraction is that 0.167% Cu nanoparticle and mass concentration are 100 parts of KCl aqueous solution of 16%, in order to allow the Cu nanoparticle be suspended in uniformly in the KCl aqueous solution, select the composite dispersing agent of tripoly phosphate sodium STPP and trolamine for use, the volume fraction of dispersion agent is 0.2%, carries out ultrasonic vibration half hour then to make suspending stabilized nano-fluid.Because the big several magnitude of thermal conductivity ratio liquid of solids, such as, the thermal conductivity of copper is 700 times of water under the room temperature, is 3000 times of machine oil.Formed nano-fluid increases by 20.54% than KCl aqueous solution thermal conductivity, and the nucleation condensate depression has reduced by 87.65%.
Embodiment three
Preparation Al
2O
3-KCl-H
2The O cold storage nanofluid is 0.65% Al with volume fraction
2O
3Nanoparticle and mass concentration are 100 parts of KCl aqueous solution of 16%, in order to allow Al
2O
3Nanoparticle is suspended in the KCl aqueous solution uniformly, selects the composite dispersing agent of tripoly phosphate sodium STPP and trolamine for use, and the volume fraction of dispersion agent is 0.35%, carries out ultrasonic vibration then and makes suspending stabilized nano-fluid in 40 minutes.Because the big several magnitude of thermal conductivity ratio liquid of solids, such as, the thermal conductivity of copper is 700 times of water under the room temperature, is 3000 times of machine oil, metal oxide such as Al
2O
3Thermal conductivity also than the big manyfold of single liquid.Formed nano-fluid has increased by 17.53% than KCl aqueous solution thermal conductivity, and the nucleation condensate depression has reduced by 85.46%.
Claims (5)
1, a kind of low temperature phase change cold storage nanofluid, it is characterized in that it comprises that mass concentration is 100 parts of the eutectic salts aqueous solution of 10-22.5%, metal nanoparticle or metal oxide nanoparticles 0.167-1.13 part and dispersion agent 0.2-0.5 part, its umber is a volume unit.
2, low temperature phase change cold storage nanofluid according to claim 1 is characterized in that: the described eutectic salts aqueous solution is the aqueous solution such as bariumchloride or Repone K.
3, low temperature phase change cold storage nanofluid according to claim 1 is characterized in that: described metal oxide nanoparticles material is the titanium dioxide TiO of particle diameter less than 100nm
2Deng oxide compound, metal nano particle material is the metals such as copper of particle diameter less than 100nm.
4, low temperature phase change cold storage nanofluid according to claim 1 is characterized in that: described dispersion agent is the composite dispersing agent of tripoly phosphate sodium STPP and trolamine, and their weight ratio is 1: 1.
5, the preparation method of low temperature phase change cold storage nanofluid according to claim 1, it is characterized in that: be that the metal nanoparticle of the eutectic salts aqueous solution and 0.167-1.13 part of 10-22.5% or metal oxide nanoparticles mix and stir with 100 parts mass concentrations, the dispersion agent that adds 0.2-0.5 part more therein stirs, and carries out then making suspending stabilized nano-fluid more than ultrasonic vibration half hour.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527077A (en) * | 2011-12-16 | 2012-07-04 | 华南理工大学 | Method for boosting crystallization of phase-change cold-storing material of eutectic salt solution |
| CN103131394A (en) * | 2011-11-25 | 2013-06-05 | 比亚迪股份有限公司 | Composite phase change material and preparation method thereof, and battery module |
| CN103884144A (en) * | 2014-04-09 | 2014-06-25 | 苏州科阿特科学仪器有限公司 | Energy storage type drug refrigerator |
| CN104861933A (en) * | 2015-05-26 | 2015-08-26 | 上海理工大学 | Low-supercooling-degree gel cold accumulation agent |
| CN106543976A (en) * | 2016-09-20 | 2017-03-29 | 广东工业大学 | A kind of TiO of high dispersion stability2‑H2O nano-fluids and its preparation method and application |
| US9677714B2 (en) | 2011-12-16 | 2017-06-13 | Biofilm Ip, Llc | Cryogenic injection compositions, systems and methods for cryogenically modulating flow in a conduit |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN109520010A (en) * | 2018-10-30 | 2019-03-26 | 刘润琦 | Nano phase change latent heat cumulative frequency conversion radiator |
| CN110437803A (en) * | 2019-07-18 | 2019-11-12 | 常州海卡太阳能热泵有限公司 | Composite phase-change cool storage material and preparation method |
| CN110762871A (en) * | 2019-10-29 | 2020-02-07 | 北京建筑大学 | Single-stage vapor compression type circulating system adopting nano-fluid supercooling synergy |
| CN111588436A (en) * | 2020-04-27 | 2020-08-28 | 贵州省人民医院 | A bag hemostasis pressurization area for implanted heart electron device |
-
2009
- 2009-04-01 CN CN200910115140A patent/CN101525530A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 何钦波等: "低温相变蓄冷纳米复合流体成核过冷度的实验研究", 材料导报 * |
| 何钦波等: "纳米TiO2-BaCl2-H2O复合低温相变蓄冷材料的制备", 顺德职业技术学院学报 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131394A (en) * | 2011-11-25 | 2013-06-05 | 比亚迪股份有限公司 | Composite phase change material and preparation method thereof, and battery module |
| CN103131394B (en) * | 2011-11-25 | 2016-08-03 | 比亚迪股份有限公司 | A kind of composite phase-change material and preparation method thereof and a kind of battery module |
| US9677714B2 (en) | 2011-12-16 | 2017-06-13 | Biofilm Ip, Llc | Cryogenic injection compositions, systems and methods for cryogenically modulating flow in a conduit |
| CN102527077A (en) * | 2011-12-16 | 2012-07-04 | 华南理工大学 | Method for boosting crystallization of phase-change cold-storing material of eutectic salt solution |
| CN103884144A (en) * | 2014-04-09 | 2014-06-25 | 苏州科阿特科学仪器有限公司 | Energy storage type drug refrigerator |
| CN104861933A (en) * | 2015-05-26 | 2015-08-26 | 上海理工大学 | Low-supercooling-degree gel cold accumulation agent |
| CN106543976A (en) * | 2016-09-20 | 2017-03-29 | 广东工业大学 | A kind of TiO of high dispersion stability2‑H2O nano-fluids and its preparation method and application |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN108456509B (en) * | 2018-03-13 | 2020-11-06 | 青海大学 | Inorganic hydrated salt phase change energy storage material and preparation method thereof |
| CN109520010A (en) * | 2018-10-30 | 2019-03-26 | 刘润琦 | Nano phase change latent heat cumulative frequency conversion radiator |
| CN110437803A (en) * | 2019-07-18 | 2019-11-12 | 常州海卡太阳能热泵有限公司 | Composite phase-change cool storage material and preparation method |
| CN110762871A (en) * | 2019-10-29 | 2020-02-07 | 北京建筑大学 | Single-stage vapor compression type circulating system adopting nano-fluid supercooling synergy |
| CN111588436A (en) * | 2020-04-27 | 2020-08-28 | 贵州省人民医院 | A bag hemostasis pressurization area for implanted heart electron device |
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Open date: 20090909 |