摘要
该文在一种新型低熔点四元混合硝酸盐LMPS盐中添加Si O2纳米粒子来提高其比热容。采用超声振荡法和熔融混合法制备纳米LMPS盐,研究2种制备过程对纳米粒子在LMPS盐中分散情况的影响,及纳米粒子的分散对比热容提高的影响。研究表明,在LMPS盐中添加纳米粒子可显著提高LMPS盐的比热容,比热容提高率与纳米粒子在分散均匀程度呈正相关,超声振荡法所制备的纳米LMPS盐比热容提高率高于熔融混合法制备的纳米熔盐。
In order to enhance the specific heat of LMPS, which is a new kind quaternary nitrate mixed salt with low melting point, adding SiO2 nanoparticles into it to synthetize the nano-LMPS by two methods： ultra-sonication and melting-mixing in high temperature. The effects of the two synthesis protocols on the nanoparticles dispersion in nano- LMPS have been studied. Furthermore, the effects of nanoparticles dispersion on enhancing the specific heat of molten salt have been researched. Results showed that the specific heat capacity of nano-LMPS has been significantly improved by adding nanoparticles. And the increasing rate of specific heat capacity is positively correlated with the uniform degree of nanoparticles dispersion. The specific heat capacity increasing rate of nano-LMPS prepared by ultra-sonication is higher than the nano-LMPS prepared by the method of melting-mixing.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第11期3018-3021,共4页
Acta Energiae Solaris Sinica
基金
国家重点基础研究发展(973)计划(2015CB251303)
国家自然科学基金(51361135702)
关键词
太阳能
熔盐
纳米粒子
超声振荡
比热容
团聚
solar energy
molten salt
nanoparticles
ultra-sonication
specific heat capacity
agglomeration
