CN102268240A - Low-temperature cold energy storage agent - Google Patents
Low-temperature cold energy storage agent Download PDFInfo
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- CN102268240A CN102268240A CN2011101584177A CN201110158417A CN102268240A CN 102268240 A CN102268240 A CN 102268240A CN 2011101584177 A CN2011101584177 A CN 2011101584177A CN 201110158417 A CN201110158417 A CN 201110158417A CN 102268240 A CN102268240 A CN 102268240A
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Abstract
The invention provides a low-temperature cold energy storage agent, which comprises 15 weight percent of NaCl, 8 percent of NH4Cl, 1 percent of guar gum and 76 percent of water. The low-temperature cold energy storage agent is prepared by the following steps: preparing a container and a stirring rod, and filling 76 percent of water in a container; and adding 15 percent of NaCl and 8 percent of NH4Cl into water, slowly adding 1 percent of guar gum into the container, and stirring with a stirring rod till the solution is uniform. The phase-change temperature of the low-temperature cold energy storage agent is -25 DEG C, and the potential heat value of the low-temperature cold energy storage agent per gram is 275J. The low-temperature cold energy storage agent has high application range, high solution heat, high volume heat storage density and a pH value of about 7, has the characteristics of low cost, no toxin, safety, environment friendliness, and capability of preventing ice release, and is particularly suitable to be used for refrigerating food, biological medicine and vaccines in a cold chain transport process.
Description
Technical field
The present invention relates to a kind of low-temperature cold accumulation agent, particularly a kind of low-temperature cold accumulation agent belongs to the energy accumulating technique field, is mainly used in the function that in the Cold Chain Logistics process article is played refrigeration, and it is rotten to prevent that article Yin Gaowen from taking place.
Background technology
High speed development along with human society, people are more and more higher to the requirement of food genuineness, transport for long-distance between a large amount of fresh provisionss and native article strange land, and short run, many kinds, multifrequency degree, the commodity distribution of short period of time require to increase day by day, thereby, in recent years, the refrigerated shipment technology in the cold chain has obtained fast development.
Refrigerated shipment is mainly mechanical refrigerated shipment and cold insulation transportation two big classes.If can realize long-distance transportation, then the latter's cost will be significantly less than the former, but its core technology provides long cold storage agent of cold insulation time.At present, many types are arranged both at home and abroad at the cold storage agent that uses, high score subclass and eutectic mixture class are typically arranged, yet all there are some defectives in known have high score subclass cold storage agent and eutectic mixture class cold storage agent, the patent No. is CN200410034106.x, the Chinese patent of the high score subclass cold storage agent that patent name is, its complicated process of preparation causes the cost of manufacture height; The transformation temperature of its prescription is-5 to 0 ℃, can not reach the needed low temperature of user; The patent No. is CN90109434.x, and patent name is the Chinese patent of eutectic mixture class, and its main component is water and Repone K, but does not have measure to prevent phase metacrystal liquid separation phenomenon, promptly releases the ice phenomenon.So the cold storage function of known these two kinds of cold storage agent is not good, occurs phase metacrystal liquid separation phenomenon easily, and the article of transportation are gone bad because of high temperature.
So be necessary to design these defectives that a kind of new low-temperature cold accumulation agent remedies known techniques.
Summary of the invention
The technical problem to be solved in the present invention is to overcome many deficiencies of the prior art, provide that a kind of use range is wide, solution heat is big, the volume thermal storage density greatly, roughly is the agent of neutral low-temperature cold accumulation, it has the advantages that cost is low, nontoxic, harmless, environmental protection can prevent to release the ice phenomenon again, and particularly suitable is as the cold storage agent of refrigeration in food, biologics and the vaccine cold chain transportation process.
In order to achieve the above object, the invention provides a kind of low-temperature cold accumulation agent, it comprises NaCl, NH
4Cl, guar gum and water, the weight percent content of above-mentioned each composition is as follows: NaCl:15%; NH
4Cl:8%; Guar gum: 1%; Water: 76%.
Mutual combination by above-mentioned each composition, in described low-temperature cold accumulation agent, add guar gum as thickening material, through long clinical service test, overcome described low-temperature cold accumulation agent phase metacrystal liquid separation phenomenon effectively, through repeatedly to its temperature experiment of the thermal cycling of lifting and the life-time service of for some time repeatedly, the physicals of low-temperature cold accumulation agent of the present invention in form and phase transition process all do not have tangible bad change, low-temperature cold accumulation agent of the present invention has nontoxic, harmless, the characteristics of environmental protection adapt to especially as food, biologics, refrigeration cold storage agent in the vaccine cold chain transportation process.
A kind of low-temperature cold accumulation agent provided by the invention, described low-temperature cold accumulation agent provides a container and a stirring rod earlier when preparation, put into the water of 76% weight ratio in described container; In water, drop into 15% NaCl and 8% NH then
4Cl gently adds 1% guar gum then in described container, stir with described stirring rod simultaneously, gets final product to stirring.
A kind of low-temperature cold accumulation agent provided by the invention, the transformation temperature of described low-temperature cold accumulation agent is-25 ℃, potential heat value is 275J/g.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.
Preferably, a kind of low-temperature cold accumulation agent, it comprises NaCl, NH
4Cl, guar gum and water, the weight percent content of above-mentioned each composition is as follows: NaCl:15%; NH
4Cl:8%; Guar gum: 1%; Water: 76%.The transformation temperature of low-temperature cold accumulation agent of the present invention is-25 ℃, and potential heat value is 275 (J/g).
The above-mentioned prescription of described low-temperature cold accumulation agent is that transformation temperature is-25 ℃ a low temperature prescription, and this prescription draws through long-felt, actual test; The cold storage agent of-25 ± 1 ℃ of transformation temperature is mainly used in conduct in the Cold Chain Logistics-15 ℃ best low-temperature receiver to-18 ℃ of refrigerating temperature environment.If change the ratio of NaCl, NH4Cl, transformation temperature, potential heat value will change, and NaCl is 15 ± 0.5%; NH4Cl changes in the small scope of 80.5 ± %, and the transformation temperature of then described low-temperature cold accumulation agent, potential heat value will change in-25 ± 1 ℃, 275 ± 5 (J/g) scope.
Preferably, described low-temperature cold accumulation agent is when preparation, and the present invention is an example with preparation 100Kg cold storage agent, and a container and a stirring rod are provided earlier, puts into the water of 76Kg weight ratio in described container; In water, drop into the NaCl of 15Kg and the NH of 8Kg then
4Cl gently adds the guar gum of 1Kg then in described container, stir with described stirring rod simultaneously, gets final product to stirring.
The cold-storage principle of low-temperature cold accumulation agent of the present invention is: become in the solid-state phase transition process to reduce in it by liquid cooled by the low-temperature cold accumulation agent and stored cold, when it emits the cold that stores by solid-state can increasing in heating becomes in the liquid phase transition process it.
Low-temperature cold accumulation agent of the present invention belongs to eutectic mixture class, is crystalline hydrate salt energy-accumulation material, is by NaCl, NH
4Compositions such as Cl, guar gum and water, it is applied widely, low price, thermal conductivity is big, solution heat is big, the volume thermal storage density greatly, generally is neutral.Its shortcoming is: occur phase metacrystal liquid separation phenomenon easily, promptly when temperature rises, the quantity not sufficient of the crystal water that it discharged is to dissolve all non-crystalline solids dehydration salt (or lower hydrate salt), because the difference of density, these not solution-off water salt settling to the bottom of container, irreversible in the reverse transformation process, form the phase layering, cause the dissolved ununiformity, thereby cause the energy storage capacity of this energy storage material to descend gradually.So low-temperature cold accumulation agent of the present invention overcomes the separation of phase metacrystal liquid by adopting thickening (suspension) agent method, this method is to add suitable thickening material (or claiming suspension agent) in the salt hydrate energy storage material, the stickiness that it has strengthened solution can be evenly distributed in the solution solid particulate in the liquid and is not deposited on container bottom.
Mutual combination by above-mentioned each composition, in described low-temperature cold accumulation agent, add guar gum as thickening material, through long clinical service test, overcome described low-temperature cold accumulation agent phase metacrystal liquid separation phenomenon effectively, through repeatedly to its temperature experiment of the thermal cycling of lifting and the life-time service of for some time repeatedly, the physicals of low-temperature cold accumulation agent of the present invention in form and phase transition process all do not have tangible bad change, low-temperature cold accumulation agent of the present invention has nontoxic, harmless, the characteristics of environmental protection adapt to especially as food, biologics, refrigeration cold storage agent in the vaccine cold chain transportation process.
Embodiment only is a preferred optimum implementation of the present invention in sum; unintelligible is that protection scope of the present invention is limited; for technical work personnel present embodiment is done according to the present invention the adjustment that does not exceed technical solution of the present invention and the change of this area, should think and drop in protection scope of the present invention.
Claims (3)
1. low-temperature cold accumulation agent, it is characterized in that: it comprises NaCl, NH
4Cl, guar gum and water, the weight percent content of above-mentioned each composition is as follows:
NaCl：15％；
NH
4Cl：8％；
Guar gum: 1%;
Water: 76%.
2. a kind of low-temperature cold accumulation agent as claimed in claim 1 is characterized in that: described low-temperature cold accumulation agent provides a container and a stirring rod earlier when preparation, put into the water of 76% weight ratio in described container; In water, drop into 15% NaCl and 8% NH then
4Cl gently adds 1% guar gum then in described container, stir with described stirring rod simultaneously, gets final product to stirring.
3. a kind of low-temperature cold accumulation agent as claimed in claim 1 or 2, it is characterized in that: the transformation temperature of described low-temperature cold accumulation agent is-25 ℃, potential heat value is 275 (J/g).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101584177A CN102268240A (en) | 2011-06-13 | 2011-06-13 | Low-temperature cold energy storage agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101584177A CN102268240A (en) | 2011-06-13 | 2011-06-13 | Low-temperature cold energy storage agent |
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| CN102268240A true CN102268240A (en) | 2011-12-07 |
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| CN2011101584177A Pending CN102268240A (en) | 2011-06-13 | 2011-06-13 | Low-temperature cold energy storage agent |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265932A (en) * | 2013-05-02 | 2013-08-28 | 苏州安特实业有限公司 | Phase-change material with phase-change temperature of -20 DEG C |
| CN103265931A (en) * | 2013-05-02 | 2013-08-28 | 苏州安特实业有限公司 | Phase-change material with phase-change temperature of -25 DEG C |
| CN103773319A (en) * | 2014-01-09 | 2014-05-07 | 浙江大学 | Method for preparing composite phase change coolant |
| CN104662120A (en) * | 2012-09-28 | 2015-05-27 | 凸版资讯股份有限公司 | Cooling tool |
| CN104726072A (en) * | 2015-03-23 | 2015-06-24 | 南京久鼎制冷空调设备有限公司 | Efficient environment-friendly low-temperature composite phase change cold accumulating agent, as well as preparation method and application thereof |
| CN104726071A (en) * | 2015-03-23 | 2015-06-24 | 南京久鼎制冷空调设备有限公司 | Composite low-temperature coolant and preparation method and applications thereof |
| CN106433566A (en) * | 2016-09-20 | 2017-02-22 | 天津瀛德科技有限公司 | Food-grade cold storage agent |
| CN106590538A (en) * | 2015-10-19 | 2017-04-26 | 松下知识产权经营株式会社 | Latent heat cold storage material |
| CN108219754A (en) * | 2017-12-18 | 2018-06-29 | 江南大学 | A kind of frozen type low-temperature cold energy storage agent |
| CN108913099A (en) * | 2018-07-10 | 2018-11-30 | 长沙鲜源生物科技有限公司 | A kind of preparation method of cold-storage material, cold-storage material, cool accumulating block and its application |
| GB2595662A (en) | 2020-06-01 | 2021-12-08 | Hubbard Products Ltd | Phase change material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1192757A (en) * | 1997-09-17 | 1999-04-06 | Asahi Denka Kogyo Kk | Latent heat storage material composition for ice heat storage system |
| CN1362462A (en) * | 2000-12-30 | 2002-08-07 | 广东科龙电器股份有限公司 | Cold accumulating agent |
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2011
- 2011-06-13 CN CN2011101584177A patent/CN102268240A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1192757A (en) * | 1997-09-17 | 1999-04-06 | Asahi Denka Kogyo Kk | Latent heat storage material composition for ice heat storage system |
| CN1362462A (en) * | 2000-12-30 | 2002-08-07 | 广东科龙电器股份有限公司 | Cold accumulating agent |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662120A (en) * | 2012-09-28 | 2015-05-27 | 凸版资讯股份有限公司 | Cooling tool |
| CN104662120B (en) * | 2012-09-28 | 2017-12-05 | 凸版资讯股份有限公司 | Cold insulation apparatus |
| CN103265932B (en) * | 2013-05-02 | 2016-07-06 | 苏州安特实业有限公司 | A kind of phase transition temperature is the phase-change material of-20 DEG C |
| CN103265932A (en) * | 2013-05-02 | 2013-08-28 | 苏州安特实业有限公司 | Phase-change material with phase-change temperature of -20 DEG C |
| CN103265931A (en) * | 2013-05-02 | 2013-08-28 | 苏州安特实业有限公司 | Phase-change material with phase-change temperature of -25 DEG C |
| CN103265931B (en) * | 2013-05-02 | 2016-07-06 | 苏州安特实业有限公司 | A kind of phase transition temperature is the phase-change material of-25 DEG C |
| CN103773319A (en) * | 2014-01-09 | 2014-05-07 | 浙江大学 | Method for preparing composite phase change coolant |
| CN103773319B (en) * | 2014-01-09 | 2016-04-27 | 浙江大学 | A kind of preparation method of composite phase-change cold storage agent |
| CN104726071B (en) * | 2015-03-23 | 2017-10-27 | 南京久鼎制冷空调设备有限公司 | A kind of compound cryosar agent for storage of coldness and its preparation method and application |
| CN104726071A (en) * | 2015-03-23 | 2015-06-24 | 南京久鼎制冷空调设备有限公司 | Composite low-temperature coolant and preparation method and applications thereof |
| CN104726072A (en) * | 2015-03-23 | 2015-06-24 | 南京久鼎制冷空调设备有限公司 | Efficient environment-friendly low-temperature composite phase change cold accumulating agent, as well as preparation method and application thereof |
| CN104726072B (en) * | 2015-03-23 | 2018-01-09 | 南京久鼎制冷空调设备有限公司 | A kind of high-efficiency environment friendly low temperature composite phase-change agent for storage of coldness and its preparation method and application |
| CN106590538A (en) * | 2015-10-19 | 2017-04-26 | 松下知识产权经营株式会社 | Latent heat cold storage material |
| CN106590538B (en) * | 2015-10-19 | 2021-06-18 | 松下知识产权经营株式会社 | Latent heat cold storage material |
| CN106433566A (en) * | 2016-09-20 | 2017-02-22 | 天津瀛德科技有限公司 | Food-grade cold storage agent |
| CN108219754A (en) * | 2017-12-18 | 2018-06-29 | 江南大学 | A kind of frozen type low-temperature cold energy storage agent |
| CN108913099A (en) * | 2018-07-10 | 2018-11-30 | 长沙鲜源生物科技有限公司 | A kind of preparation method of cold-storage material, cold-storage material, cool accumulating block and its application |
| GB2595662A (en) | 2020-06-01 | 2021-12-08 | Hubbard Products Ltd | Phase change material |
| WO2021245404A1 (en) | 2020-06-01 | 2021-12-09 | Hubbard Products Limited | Phase change material |
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Application publication date: 20111207 |