二元共熔水合盐相变储热材料过冷度问题的研究
|
摘要
本文研究了两种水和盐Na_2CO_3·10H_2O与Na_2HPO_4·12H_2O按照不同质量比混合形成二元共熔水合盐,分析对其过冷度的影响。实验结果表明,Na_2CO_3·10H_2O与Na_2HPO_4·12H_2O质量比1∶9、2∶8、3∶7、4∶6时形成的EHS,其相变温度均低于单一组分时的相变温度,每组EHS的过冷度都比单一组分的水合盐的过冷度低,其中Na_2CO_3·10H_2O与Na_2HPO_4·12H_2O质量比为1∶9形成的EHS过冷度最小,为8.1℃。
In this paper,two hydrated salts,Na_2CO_3·10 H_2O and Na_2HPO_4 ·12 H_2O, were mixed according to different mass ratios(1∶9、2∶8、3∶7、4∶6) to form binary eutectic hydrated salts,and the influence on their supercooling degree was analyzed. The experimental results show that the phase transition temperature of EHS, is lower than that of single component; and the supercooling degree of each group of EHS is lower than that of hydrated salt of single component, When the mass ratio of Na_2CO_3·10 H_2O and Na_2HPO_4 ·12 H_2O is 1∶9, the supercooling degree of EHS was the lowest,which was 8.1℃.
In this paper,two hydrated salts,Na_2CO_3·10 H_2O and Na_2HPO_4 ·12 H_2O, were mixed according to different mass ratios(1∶9、2∶8、3∶7、4∶6) to form binary eutectic hydrated salts,and the influence on their supercooling degree was analyzed. The experimental results show that the phase transition temperature of EHS, is lower than that of single component; and the supercooling degree of each group of EHS is lower than that of hydrated salt of single component, When the mass ratio of Na_2CO_3·10 H_2O and Na_2HPO_4 ·12 H_2O is 1∶9, the supercooling degree of EHS was the lowest,which was 8.1℃.
引文
[1]赵浩博.论我国能源结构战略性调整策略[J].财经界,2016(21):367-368.
[2]Farid M M,Khudhair A M,Razack S A K,et al.A review on phase change energy storage:Materials and applications[J].Energy Conversion & Management,2004,45(9/10):1597-1615.
[3]张寅平,胡汉平,孔祥冬.相变贮能-理论和应用[M].合肥:中国科学技术大学出版社,1996.
[4]Telkes M.Thermal storage in salt-hydrates[J].Solar Materials Science,1980,1:377-404.
[5]王志强,曹明礼,龚安华.相变储热材料的种类、应用及展望[J].安徽化工,2005,31(2):8-11.
[6]文越华,张公正,王正刚,等.Na2SO4·10H2O复合相变储冷体系的热力学性质[J].北京理工大学学报,1999,19(6):778-781.
[7]Moreno P,Miró L,Solé A,et al.Corrosion of metal and metal alloy containers in contact with phase change materials (PCM) for potential heating and cooling applications[J].Applied Energy,2014,125:238-245.
[2]Farid M M,Khudhair A M,Razack S A K,et al.A review on phase change energy storage:Materials and applications[J].Energy Conversion & Management,2004,45(9/10):1597-1615.
[3]张寅平,胡汉平,孔祥冬.相变贮能-理论和应用[M].合肥:中国科学技术大学出版社,1996.
[4]Telkes M.Thermal storage in salt-hydrates[J].Solar Materials Science,1980,1:377-404.
[5]王志强,曹明礼,龚安华.相变储热材料的种类、应用及展望[J].安徽化工,2005,31(2):8-11.
[6]文越华,张公正,王正刚,等.Na2SO4·10H2O复合相变储冷体系的热力学性质[J].北京理工大学学报,1999,19(6):778-781.
[7]Moreno P,Miró L,Solé A,et al.Corrosion of metal and metal alloy containers in contact with phase change materials (PCM) for potential heating and cooling applications[J].Applied Energy,2014,125:238-245.