CN1174074C - Cold accumulating agent - Google Patents
Cold accumulating agent Download PDFInfo
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- CN1174074C CN1174074C CNB001310380A CN00131038A CN1174074C CN 1174074 C CN1174074 C CN 1174074C CN B001310380 A CNB001310380 A CN B001310380A CN 00131038 A CN00131038 A CN 00131038A CN 1174074 C CN1174074 C CN 1174074C
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Abstract
一种可用于冰箱、冰柜、冷柜等中的蓄冷剂，包括含有氯化铵及金属氯化物的水溶液，其中所述氯化铵重量百分比含量为8～30%，所述金属氯化物重量百分比含量为0.1～19%。本发明充分利用了相变潜热，具有合适的相变温度和更大的相变潜热，并具有较窄凝固和熔化温度范围，其凝固温度在-30℃～-5℃之间，相变潜热大于300KJ/kg，基本不存在析冰现象。A cold storage agent that can be used in refrigerators, freezers, freezers, etc., comprising an aqueous solution containing ammonium chloride and metal chloride, wherein the weight percentage of the ammonium chloride is 8-30%, and the weight percentage of the metal chloride is 0.1 to 19%. The invention makes full use of the latent heat of phase change, has a suitable phase change temperature and greater latent heat of phase change, and has a narrow range of solidification and melting temperatures. The solidification temperature is between -30°C and -5°C, and the latent heat of phase change More than 300KJ/kg, there is basically no ice formation phenomenon.
Description
技术领域technical field
本发明涉及蓄冷剂，具体地说，涉及一种可用于电冰箱、冷藏箱、冷柜及其它蓄冷器中的蓄冷剂。The invention relates to a cold storage agent, in particular to a cold storage agent which can be used in refrigerators, refrigerators, freezers and other cold storage devices.
背景技术Background technique
为使冰箱压缩机在停机或者供电中断后，冰箱能够在较长时间内能提供冷量，使冰箱内保持低温，一些冰箱制造公司采用了超级冰袋蓄冷技术；另一方面，为了蒸发器传热温差，降低冰箱耗电量，提高能源利用效率，冰箱采用不间断式蒸发器，也有大量相关的专利和文献报道；另外，为了方便防疫药品的低温运输，其运输冷藏设备中也采用了蓄冷技术。因此，蓄冷技术已成为冷藏冷冻领域一种广泛运用的技术。In order to enable the refrigerator to provide cooling capacity for a long period of time after the refrigerator compressor is shut down or the power supply is interrupted, to keep the refrigerator at a low temperature, some refrigerator manufacturing companies have adopted super ice pack cold storage technology; on the other hand, for the evaporator to transfer heat The temperature difference reduces the power consumption of the refrigerator and improves energy utilization efficiency. The refrigerator uses an uninterrupted evaporator, and there are also a large number of related patents and literature reports. In addition, in order to facilitate the low-temperature transportation of anti-epidemic drugs, cold storage technology is also used in its transportation refrigeration equipment . Therefore, cold storage technology has become a widely used technology in the field of refrigeration and freezing.
目前所使用的蓄冷剂，由于对蓄冷剂研究不够充分，或熔点不合适，如某专利冰箱用蓄冷剂为盐溶液，相变温度为-12℃，不适合用于二星级和三星级冰箱蓄冷，这主要是因为要保证压缩机停机后三星级冰箱冷冻室内-18℃以下，蓄冷剂必须有一定的传热温差，蓄冷剂相变温度通常要在-25℃以下，该盐溶液显然是不符合要求的；或存在析冰现象，使蓄冷剂的相变潜热不能在设计的熔点附近有效的吸收和释放，从而达不到蓄冷器设计时的目标保冷蓄冷效果，失去利用相变潜热蓄冷的意义。The cold storage agent used at present, due to insufficient research on the cooling storage agent, or the melting point is not suitable, for example, the cooling storage agent used in a patented refrigerator is a salt solution, and the phase transition temperature is -12°C, which is not suitable for two-star and three-star Refrigerator cold storage, this is mainly because to ensure that the freezing room of the three-star refrigerator is below -18°C after the compressor stops, the cold storage agent must have a certain heat transfer temperature difference, and the phase transition temperature of the cold storage agent is usually below -25°C. Obviously it does not meet the requirements; or there is ice precipitation, so that the latent heat of phase change of the cold storage agent cannot be effectively absorbed and released near the designed melting point, thus failing to achieve the cold storage effect of the design of the cold storage device, and losing the use of phase change Significance of latent heat storage.
发明内容Contents of the invention
本发明的目的在于提供一种蓄冷剂，可以克服上述现有技术的缺点，通过合理调节其配方比例实现不同的相变温度，使其能够分别用于冰箱冷冻室和冷藏室蓄冷；通过利用蓄冷剂合理的相变温度，减小蒸发器传热温差，提高能源利用效率，从而降低冰箱耗电量。The purpose of the present invention is to provide a cold storage agent, which can overcome the above-mentioned shortcoming of the prior art, and realize different phase transition temperatures by rationally adjusting its formula ratio, so that it can be used for cold storage in a refrigerator freezer and a refrigerator; Reasonable phase change temperature of the agent, reducing the heat transfer temperature difference of the evaporator, improving energy utilization efficiency, thereby reducing the power consumption of the refrigerator.
本发明的目的是按如下技术方案实现的，构造一种蓄冷剂，由氯化铵、金属氯化物和水组成，其中，氯化铵的重量百分比为6～30％，金属氯化物的重量百分比为0.1～3.5％，其余为水，所述金属氯化物为氯化钠或氯化钾或氯化钙。The purpose of the present invention is to realize according to the following technical scheme, construct a kind of cold storage agent, be made up of ammonium chloride, metal chloride and water, wherein, the weight percentage of ammonium chloride is 6～30%, the weight percentage of metal chloride 0.1-3.5%, the rest is water, and the metal chloride is sodium chloride, potassium chloride or calcium chloride.
在本发明的所述蓄冷剂中，所述金属氯化物为氯化钠或氯化钾或氯化钙。In the cool storage agent of the present invention, the metal chloride is sodium chloride or potassium chloride or calcium chloride.
实施本发明提供的蓄冷剂，充分利用了相变潜热，具有合适的相变温度和更大的相变潜热，并具有较窄凝固和熔化温度范围，其凝固温度在-30℃～-5℃之间，相变潜热大于300KJ/kg，基本不存在析冰现象。The cold storage agent provided by the present invention makes full use of the latent heat of phase change, has a suitable phase change temperature and greater latent heat of phase change, and has a narrow range of solidification and melting temperatures, and its solidification temperature is between -30°C and -5°C Between, the latent heat of phase change is greater than 300KJ/kg, and there is basically no ice formation phenomenon.
具体实施方式Detailed ways
下面结合实施例，对本发明的蓄冷剂的特点作进一步说明：Below in conjunction with embodiment, the characteristics of cold storage agent of the present invention are described further:
该蓄冷剂以传热学、溶解理论和热力学的相平衡理论为指导，通过大量的试验获得的，它是以氯化铵、氯化钠为主体的水溶液。通过改变氯化铵、氯化钠或氯化钾水溶液的组成配比，可以得到分别适合冰箱冷藏室和冷冻室蓄冷器使用的具有较窄凝固和熔化温度范围的蓄冷剂。根据配方的组成比例，将氯化铵的重量百分比含量近按6～30％，氯化钠的重量百分比含量近按0.1～3.5Wt％(加入先后顺序并不影响蓄冷剂的蓄冷性能)倒入容器(如烧杯)，加入配方浓度所需要66.5～89.5％的水量(自来水、蒸馏水、离子交换水等)，搅拌直至完全溶解形成均一溶液。Guided by heat transfer, dissolution theory and thermodynamic phase equilibrium theory, the cold storage agent is obtained through a large number of experiments. It is an aqueous solution mainly composed of ammonium chloride and sodium chloride. By changing the composition ratio of the ammonium chloride, sodium chloride or potassium chloride aqueous solution, it is possible to obtain cold storage agents with narrower freezing and melting temperature ranges which are respectively suitable for cold storage in refrigerators and freezers. According to the composition ratio of the formula, the weight percentage content of ammonium chloride is approximately 6-30%, and the weight percentage content of sodium chloride is approximately 0.1-3.5Wt% (the order of adding does not affect the cold storage performance of the cold storage agent) into the To a container (such as a beaker), add 66.5-89.5% of water (tap water, distilled water, ion-exchanged water, etc.) required by the formula concentration, and stir until completely dissolved to form a uniform solution.
实施例：氯化铵的重量百分比8％，氯化钠重量百分比含量为15％。其余为水。这样配制的蓄冷液，相变温度为-24.45℃。Embodiment: the weight percentage of ammonium chloride is 8%, and the weight percentage content of sodium chloride is 15%. The rest is water. The cold storage liquid prepared in this way has a phase transition temperature of -24.45°C.
实施例：氯化铵的重量百分比12％，氯化钠重量百分比含量为0.3％。其余为水。这样配制的蓄冷液，相变温度为-17℃。Embodiment: the weight percentage of ammonium chloride is 12%, and the weight percentage content of sodium chloride is 0.3%. The rest is water. The cold storage liquid prepared in this way has a phase transition temperature of -17°C.
实施例：氯化铵的重量百分比2％，氯化钾重量百分比含量为19％。其余为水。这样配制的蓄冷液，相变温度为-14.1℃。Embodiment: the weight percentage of ammonium chloride is 2%, and the weight percentage content of potassium chloride is 19%. The rest is water. The cold storage liquid prepared in this way has a phase transition temperature of -14.1°C.
按照本发明的蓄冷剂，可靠性好，制作工艺简单，节省了能源，成本低。According to the cold storage agent of the present invention, the reliability is good, the manufacturing process is simple, the energy is saved, and the cost is low.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001310380A CN1174074C (en) | 2000-12-30 | 2000-12-30 | Cold accumulating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001310380A CN1174074C (en) | 2000-12-30 | 2000-12-30 | Cold accumulating agent |
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| Publication Number | Publication Date |
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| CN1362462A CN1362462A (en) | 2002-08-07 |
| CN1174074C true CN1174074C (en) | 2004-11-03 |
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| CNB001310380A Expired - Fee Related CN1174074C (en) | 2000-12-30 | 2000-12-30 | Cold accumulating agent |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532744B (en) * | 2008-03-10 | 2011-07-27 | 苏庆泉 | Heat pump circulating system and method thereof |
| CN102533224B (en) * | 2010-12-28 | 2014-04-09 | 中国科学院广州能源研究所 | Low temperature phase change coolant |
| CN102268240A (en) * | 2011-06-13 | 2011-12-07 | 广州赛能冷藏科技有限公司 | Low-temperature cold energy storage agent |
| CN102382630A (en) * | 2011-08-25 | 2012-03-21 | 吕岩 | Cold storage medium and preparation method thereof |
| CN103666382B (en) * | 2013-12-16 | 2016-03-30 | 苏州安特实业有限公司 | For the cold storage agent and preparation method thereof of thermantidote |
| CN103666387B (en) * | 2013-12-16 | 2017-01-11 | 苏州安特实业有限公司 | Long-acting fresh-keeping coolant for seafood and preparation method for coolant |
| CN103666388A (en) * | 2013-12-16 | 2014-03-26 | 苏州安特实业有限公司 | Coolant for fresh keeping chamber of refrigerator and preparation method for coolant |
| CN103734252B (en) * | 2013-12-16 | 2015-12-30 | 苏州安特实业有限公司 | For the fresh-keeping cold-storage agent and preparation method thereof of seafood |
| 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 |
| CN105542722A (en) * | 2015-12-14 | 2016-05-04 | 四川农业大学 | Novel biological ice bag and preparation method thereof |
| CN106928903A (en) * | 2015-12-30 | 2017-07-07 | 顺丰速运有限公司 | Compound ultralow temperature phase change cold accumulating agent, its purposes and the cold-storage device containing the agent for storage of coldness |
| CN106928902A (en) * | 2015-12-30 | 2017-07-07 | 顺丰速运有限公司 | A kind of preparation method of compound ultralow temperature phase change cold accumulating agent |
| US20200248057A1 (en) * | 2017-07-31 | 2020-08-06 | Sharp Kabushiki Kaisha | Latent heat storage material, cold storage pack, cooling container, logistic packaging container, and cooling unit |
| CN111819265B (en) | 2018-03-06 | 2021-10-26 | 株式会社钟化 | Cold storage material composition and use thereof |
| CN113185952B (en) * | 2020-01-24 | 2022-05-13 | 纯钧新材料(深圳)有限公司 | Inorganic phase change materials as coolants |
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