以CaCl2·6H2O-25% MgCl2·6H2O为相变蓄冷基材,丙三醇作温度调节剂,制备一种新型空调蓄冷相变材料。CaCl2·6H2O-25% MgCl2·6H2O与丙三醇质量比为19∶1时复合相变材料的相变温度(11.24℃)适合空调蓄冷,且相变潜热值为119.15J/g。加入SrCl2·6H2O作成核剂,添加1.2%的SrCl2·6H2O时复合材料的过冷度几乎为零。经过50次热循环测试未见材料出现相分离,热稳定性能良好。
With CaCl2·6H2O-25wt% MgCl2·6H2O serving as the phase change cold storage substrate and glycerol serving as the temperature regulator,a novel type of phase change material for air-conditioning cold storage was created.When the mass ratio of CaCl2·6H2O-25wt% MgCl2·6H2O to glycerol was 19∶1,the phase change temperature of the composite phase change material was 11.24℃,which was suitable for air-conditioning cold storage,with a latent heat value of 119.15J/g.When 1.2wt% of SrCl2·6H2O was added as nucleating agent,the supercooling degree of the composite material was almost zero.No phase separation was seen after 50 heat cycle testing,and the material's thermal stability was satisfactory.
[1] Raihan A,Pavel M I,Muhtsim D A,et al.The role of renewable energy use,technological innovation,and forest cover toward green development:evidence from Indonesia[J].Innovation and Green Development,2023,2(1):100035.
[2] Gu H,Chen Y,Yao X,et al.Review on heat pump (HP) coupled with phase change material (PCM) for thermal energy storage[J].Chemical Engineering Journal,2023,455:140701.
[3] IEA.Air conditioning use emerges as one of the key drivers of global electricity-demand growth[J].International Energy Agency,2018.
[4] Muzhanje A T,Hassan M A,Hassan H.Phase change material based thermal energy storage applications for air conditioning[J].Applied Thermal Engineering,2022,214:118832.
[5] 张茜,王宇,安允,等.动态冰浆系统安装与调试技术[J].洁净与空调技术,2021(4):16-18.
[6] 曹士博,罗孝学,韩晓春,等.新型有机-无机复合相变蓄冷材料的制备及性能研究[J].化工新型材料,2023,51(5):68-72.
[7] Li S F,Liu Z,Wang X J.A comprehensive review on positive cold energy storage technologies and applications in air conditioning with phase change materials[J].Applied Energy,2019,255:113667.
[8] 杨颖,沈海英.复合低温相变蓄冷材料的实验研究[J].低温物理学报,2009,31(2):144-147.
[9] 游辉,谢晶.低温相变蓄冷材料及其应用于冷链的研究进展[J].食品与发酵工业,2021,47(18):287-293.
[10] 李靖,谢如鹤,刘广海,等.冷藏运输用新型低温相变材料及装备的研制[J].制冷学报,2018,39(4):32-37.
[11] 邢琳,方贵银,杨帆.微胶囊相变蓄冷材料的制备及其性能研究[J].真空与低温,2006(3):153-156.
[12] 章学来,杨阳.月桂酸-正辛酸低温相变材料的制备和循环性能[J].化学工程,2013,41(11):10-13.
[13] Telkes M.Nucleation of supersaturated inorganic salt solutions[J].Industrial & Engineering Chemistry,1952,44(6):1308-1310.
[14] Veerakumar C,Sreekumar A.Phase change material based cold thermal energy storage:materials,techniques and applications-a review[J].International Journal of Refrigeration,2016,67:271-289.
[15] Zhang P,Xiao X,Ma Z W.A review of the composite phase change materials:fabrication,characterization,mathematical modeling and application to performance enhancement[J].Applied Energy,2016,165:472-510.
[16] Xinxing Z,Yuan Z,Xiang L I,et al.Research progress of calcium chloride hexahydrate phase change material[J].Energy Storage Science and Technology,2018,7(1):40.
[17] Ushak S,Gutierrez A,Galleguillos H,et al.Thermophysical characterization of a by-product from the non-metallic industry as inorganic PCM[J].Solar Energy Materials and Solar Cells,2015,132:385-391.
[18] El-Sebaii A A,Al-Heniti S,Al-Agel F,et al.One thousand thermal cycles of magnesium chloride hexahydrate as a promising PCM for indoor solar cooking[J].Energy Conversion and Management,2011,52(4):1771-1777.
[19] Tyagi V V,Buddhi D.Thermal cycle testing of calcium chloride hexahydrate as a possible PCM for latent heat storage[J].Solar Energy Materials and Solar Cells,2008,92(8):891-899.
[20] Assarssog G O.Equilibria in aqueous systems containing K+,Na+,Ca2+,Mg2+ and Cl-.Ⅲ.the ternary system CaCl2-MgCl2-H2O[J].Journal of the American Chemical Society,1950,72(4):1442-1444.
[21] Zhang Y,Zhang X.Thermal properties of a new type of calcium chloride hexahydrate-magnesium chloride hexahydrate/expanded graphite composite phase change material and its application in photovoltaic heat dissipation[J].Solar Energy,2020,204:683-695.
[22] Li G,Zhang B,Li X,et al.The preparation,characterization and modification of a new phase change material:CaCl2·6H2O-MgCl2·6H2O eutectic hydrate salt[J].Solar Energy Materials and Solar Cells,2014,126:51-55.
[23] Cao S,Luo X,Han X,et al.Development of a new modified CaCl2·6H2O composite phase change material[J].Energies,2022,15(3):824.
[24] Wang X,Dennis M,Hou L.Clathrate hydrate technology for cold storage in air conditioning systems[J].Renewable and Sustainable Energy Reviews,2014,36:34-51.
[25] Li G,Hwang Y,Radermacher R.Review of cold storage materials for air conditioning application[J].International Journal of Refrigeration,2012,35(8):2053-2077.
[26] 高才,周国燕,胥义华,等.乙二醇和丙三醇水溶液冻结特性的研究[J].物理化学学报,2004,20(2):123-128.
[27] 韩兴超,章学来,华维三,等.成核剂对相变材料Ba(OH)2·8H2O储热特性的影响[J].化工进展,2018,37(7):2727-2733.
[28] Lane G A.Phase change materials for energy storage nucleation to prevent supercooling[J].Solar Energy Materials and Solar Cells,1992,27(2):135-160.
