局部低温诱发过冷三水醋酸钠释能特性实验研究

doi:10.11949/0438-1157.20190401

摘要/Abstract

摘要：

利用半导体制冷局部低温诱发稳定过冷的三水醋酸钠溶液凝固，实验研究不同含水量、样品质量、输入功率等条件下过冷溶液结晶诱导期及释热特性。结果表明：随样品含水量增加，整体呈现结晶诱导期增加，释热温度下降的趋势，含水量44%作为较理想的体系配比，结晶诱导期为2 min，稳定放热温度达52.8℃；诱发过程中制冷装置输入功率越大，容器壁面降温越快，较容易触发，功率为280 W的结晶诱导期是功率为70 W的 1/3；样品质量越大，结晶诱导期越短，稳定放热温度相对较高，放热时间趋长。实验结果为稳定过冷水合盐局部低温诱发凝固释能系统设计提供依据。

关键词: 局部低温, 三水醋酸钠, 稳定过冷, 结晶, 相变, 含水量, 太阳能

Abstract:

Experiments are performed on the effect of local cooling by thermoelectric cooler on triggering solidification of supercooled sodium acetate trihydrate (SAT). Factors such as the water content, the SAT sample mass as well as the input power of the thermoelectric cooler are examined about their effects on the crystallization activation and discharging characteristics. The results showed that with the increase of water content, the overall crystallization induction period increased, the heat release temperature decreased, and the water content of 44% was used as the ideal system ratio. The crystallization induction period was 2 min and the stable exothermic temperature was 52.8℃. The higher the input power(P) is, the faster the unit is cooled and the induction time period for P=280 W is one third of that for P=70 W. The probability of nucleation of samples is increased for higher sample mass and then the induction time is shorter with higher discharging temperature and longer heat release time.

Key words: local cooling, sodium acetate trihydrate, stable supercooling, crystallization, phase change, water content, solar energy

中图分类号:

TK 02

王慧丽, 周国兵. 局部低温诱发过冷三水醋酸钠释能特性实验研究[J]. 化工学报, 2019, 70(9): 3346-3352.

Huili WANG, Guobing ZHOU. Experimental investigation on discharging characteristics of supercooled sodium acetate trihydrate induced by local cooling[J]. CIESC Journal, 2019, 70(9): 3346-3352.

图/表 8

图1 实验装置简图

Fig.1 Schematic diagram of experimental apparatus

图2 局部低温诱发过冷水合盐溶液凝固机理

Fig.2 Mechanism of solidification of supercooled salt hydrate solution induced by local cooling

图3 两种冷却方式下壁面温度随时间变化曲线

Fig.3 Time dependent wall temperature of unit under two different cooling methods

图4 循环过程中容器壁面温度随时间变化曲线

Fig.4 Time dependent wall temperature of unit during test

图5 含水量44%触发过程容器壁面温度随时间变化曲线

Fig.5 Time dependent wall temperature of unit during triggering solidification period with water content of 44%

图6 不同含水量下样品壁面温度及平均诱导时间变化

Fig.6 Time dependent wall temperature of unit and average induction time of samples with different water contents

图7 不同样品质量下壁面温度及平均诱导时间变化

Fig.7 Time dependent wall temperature of unit and average induction time of samples with different masses of samples

图8 不同输入功率下壁面温度及平均诱导时间变化

Fig.8 Time dependent wall temperature of unit and average induction time of samples with different input powers of semiconductors

参考文献 32

1	Schultz J M . Phase change material storage with supercooling[C]//Streicher W. IEA SHC Task 32—Advanced Storage Concepts for Solar and Low Energy Buildings. Austria: Graz University of Technology Austria, 2008: 68-84.
2	Streicher W . Final report of Subtask C “Phase Change Materials” The overview[R]. IEA Solar Heating and Cooling Programme Task 32—Advanced Storage Concepts for Solar And Low Energy Buildings. 2008.
3	Furbo S , Fan J H , Andersen E , et al . Development of seasonal heat storage based on stable supercooling of a sodium acetate water mixture[J]. Energy Procedia, 2012, 30(1): 260-269.
4	Furbo S , Dragsted J , Chen Z , et al . Towards seasonal heat storage based on stable super cooling of sodium acetate trihydrate[C]//EuroSun 2010 Congress Proceedings. Graz, Austria, 2010.
5	Zhou G B , Xiang Y T . Experimental investigations on stable supercooling performance of sodium acetate trihydrate PCM for thermal storage[J]. Solar Energy, 2017, 155: 1261-1272.
6	Dannemand M , Johansen J B , Kong W Q , et al . Experimental investigations on cylindrical latent heat storage units with sodium acetate trihydrate composites utilizing stable supercooling[J]. Applied Energy, 2016, 177: 591-601.
7	Dannemand M , Dragsted J , Fan J H , et al . Experimental investigations on prototype heat storage units utilizing stable supercooling of sodium acetate trihydrate mixtures[J]. Applied Energy, 2016, 169: 72-80.
8	Kong W Q , Dannemand M , Johansen J B , et al . Ageing stability of sodium acetate trihydrate with and without additives for seasonal heat storage[C] // ISES Solar World Congress. Daegu, Korea, 2015.
9	Cabeza L F , Svensson G , HieblerS, et al . Thermal performance of sodium acetate trihydrate thickened with different materials as phase change energy storage material[J]. Applied Thermal Engineering, 2003, 23(13): 1697-1704.
10	崔文龙, 袁艳平, 孙亮亮, 等 . 三水合乙酸钠在相变单元的传热特性及其过冷度改善[J]. 化工学报, 2016, 67(S2): 149-158.
	Cui W L , Yuan Y P , Sun L L , et al . Thermal property in phase-change units and improvement for supercoiling of sodium acetatetrihydrate[J]. CIESC Journal, 2016, 67(S2): 149-158.
11	张雪梅, 蔡路茵, 苏忠杰, 等 . 超声波对三水醋酸钠相分离及结晶的影响[J]. 化工学报, 2010, 61(1): 104-108.
	Zhang X M , Cai L Y , Su Z J , et al . Effects of ultrasound on phase separation and crystallization of sodium acetate trihydrate[J]. CIESC Journal, 2010, 61(1): 104-108.
12	Cabeza L F , Illa J , Roca J , et al . Immersion corrosion tests on metal-salt hydrate pairs used for latent heat storage in the 32 to 36 ^oC temperature range[J]. Material and Corrosion, 2001, 52(2): 140-146.
13	Zhou G B , Zhu M C , Xiang Y T . Effect of percussion vibration on solidification of supercooled salt hydrate PCM in thermal storage unit[J]. Renewable Energy, 2018, 126: 537-544.
14	Rogerson M A , Cardoso S S S . Solidification in heat packs(Ⅲ): Metallic trigger[J]. AIChE Journal, 2003, 49(2): 522-529.
15	Araki N , Futamura M , Makino A , et al . Measurements of thermophysical properties of sodium acetate hydrate[J]. International Journal of Thermophysics, 1995, 16(6): 1455-1466.
16	Englmair G , Moser C , Furbo S , et al . Design and functionality of a segmented heat-storage prototype utilizing stable supercooling of sodium acetate trihydrate in a solar heating system[J]. Applied Energy, 2018, 221: 522-534.
17	潘利红, 黄利维, 岳桥, 等 . 振动对无机盐相变材料过冷度的影响[J]. 浙江工业大学学报, 2008, 36(6): 655-658.
	Pan L H , Huang L W , Yue Q , et al . Influence of vibration on the supercooling relex of inorganic salt solution as a phase change material[J]. Journal of Zhejiang University of Technology, 2008, 36(6): 655-658.
18	Seo K , Suzuki S , Kinoshita T , et al . Effect of ultrasonic irradiation on the crystallization of sodium acetate trihydrate utilized as heat storage material[J]. Chemical Engineering and Technology, 2012, 35(6): 1013-1016.
19	Sandnes B . Exergy efficient production, storage and distribution of solar energy[D]. Oslo : University of Oslo, 2003.
20	Englmair G , Jiang Y L , Dannemand M , et al . Crystallization by local cooling of supercooled sodium acetate trihydrate composites for long-term heat storage[J]. Energy and Buildings, 2018, 180: 159-171.
21	Disalvo F J . Thermoelectric cooling and power generation[J]. Science, 1999, 285(5428): 703-706.
22	Bansal P K , Martin A . Comparative study vapor compression, thermoelectric and absorption refrigerators[J]. International Journal of Energy Research, 2015, 24(2): 93-107.
23	Jin X , Medina M A , Zhang X , et al . Phase-change characteristic analysis of partially melted sodium acetate trihydrate using DSC[J]. International Journal of Thermophysics, 2014, 35(1): 45-52.
24	丁益民, 阎立诚 . 水合盐储热材料的成核作用[J]. 化学物理学报, 1996, (1): 83-86.
	Ding Y M , Yan L C . Nucleation of salt-hydrate as the thermal energy storage material[J]. Chinese Journal of Chemical Physics, 1996, (1): 83-86.
25	Chinese Pharmacopoeia Commission . Pharmacopoeia of the People’s Republic of China 2010 Edition[M]. Beijing: China Medical Science Press, 2010.
26	Sharma S K , Jotshi C K , Kumar S . Thermal stability of sodium salt hydrates for solar energy storage applications[J]. Solar Energy, 1990, 45(3): 177-181.
27	Keinänen M . Latent heat recovery from supercooled sodium acetate trihydrate using a brush heat exchanger[D]. Espoo: Helsinki University of Technology, 2007.
28	Kong W Q , Dannemand M , Berg Johansen J , et al . Experimental investigations on phase separation for different heights of sodium acetate water mixtures under different conditions[J]. Applied Thermal Engineering, 2019, 148: 796-805.
29	Rad F M , Fung A S . Solar community heating and cooling system with borehole thermal energy storage—review of systems[J]. Renewable and Sustainable Energy Reviews, 2016, 60: 1550-1561.
30	Dietz P L , Brukner J S , Hollingsworth C A . Linear crystallization velocities of sodium acetate in supersaturated solutions[J]. The Journal of Physical Chemistry, 1957, 61(7): 944-948.
31	Rauls M , Bartosch K , Kind M , et al . The influence of impurities on crystallization kinetics — a case study on ammonium sulfate[J]. Journal of Crystal Growth, 2000, 213(1): 116-128.
32	Wei L L , Kenichi O . Supercooling and solidification behavior of phase change[J]. ISIJ International, 2010, 50 (9): 1265-1269.

[1]	叶展羽, 山訸, 徐震原. 用于太阳能蒸发的折纸式蒸发器性能仿真[J]. 化工学报, 2023, 74(S1): 132-140.
[2]	张双星, 刘舫辰, 张义飞, 杜文静. R-134a脉动热管相变蓄放热实验研究[J]. 化工学报, 2023, 74(S1): 165-171.
[3]	江河, 袁俊飞, 王林, 邢谷雨. 均流腔结构对微细通道内相变流动特性影响的实验研究[J]. 化工学报, 2023, 74(S1): 235-244.
[4]	吴延鹏, 刘乾隆, 田东民, 陈凤君. 相变材料与热管耦合的电子器件热管理研究进展[J]. 化工学报, 2023, 74(S1): 25-31.
[5]	于宏鑫, 邵双全. 水结晶过程的分子动力学模拟分析[J]. 化工学报, 2023, 74(S1): 250-258.
[6]	齐聪, 丁子, 余杰, 汤茂清, 梁林. 基于选择吸收纳米薄膜的太阳能温差发电特性研究[J]. 化工学报, 2023, 74(9): 3921-3930.
[7]	傅予, 刘兴翀, 王瀚雨, 李海敏, 倪亚飞, 邹文静, 雷月, 彭永姗. F₃EACl修饰层对钙钛矿太阳能电池性能提升的研究[J]. 化工学报, 2023, 74(8): 3554-3563.
[8]	史昊鹏, 钟达文, 廉学新, 张君峰. 朝下多尺度沟槽翅片结构表面沸腾换热实验研究[J]. 化工学报, 2023, 74(7): 2880-2888.
[9]	史方哲, 甘云华. 超薄热管启动特性和传热性能数值模拟[J]. 化工学报, 2023, 74(7): 2814-2823.
[10]	邢美波, 张中天, 景栋梁, 张洪发. 磁调控水基碳纳米管协同多孔材料强化相变储/释能特性[J]. 化工学报, 2023, 74(7): 3093-3102.
[11]	张贲, 王松柏, 魏子亚, 郝婷婷, 马学虎, 温荣福. 超亲水多孔金属结构驱动的毛细液膜冷凝及传热强化[J]. 化工学报, 2023, 74(7): 2824-2835.
[12]	李振, 张博, 王丽伟. PEG-EG固-固相变材料的制备和性能研究[J]. 化工学报, 2023, 74(6): 2680-2688.
[13]	代佳琳, 毕唯东, 雍玉梅, 陈文强, 莫晗旸, 孙兵, 杨超. 热物性对混合型CPCMs固液相变特性影响模拟研究[J]. 化工学报, 2023, 74(5): 1914-1927.
[14]	吴学红, 栾林林, 陈亚南, 赵敏, 吕财, 刘勇. 可降解柔性相变薄膜的制备及其热性能[J]. 化工学报, 2023, 74(4): 1818-1826.
[15]	李明川, 樊栓狮, 徐赋海, 卢惠东, 李晓军. 水合物热分解Stefan相变模型解的存在性及Laplace变换求解[J]. 化工学报, 2023, 74(4): 1746-1754.