高温熔盐储罐中储热介质温度约600 ℃,要求每天温降不超过1 ℃,为满足保温要求,储罐基础常以陶粒作为保温材料。通过对不同级配下5种典型陶粒的化学成分、材料特性和高温热工参数等进行试验研究,得到了陶粒的物理力学性能、相变温度、热膨胀系数和不同温度（20~600 ℃）下的导热系数等关键参数,揭示了陶粒的导热特性和变形机理。
Abstract
The temperature of the heat storage medium in the high-temperature molten salt storage tank is about 600 ℃, and the temperature drop is required to not exceed 1 ℃ per day. In order to meet the thermal insulation requirements, the foundation of the storage tank is often made of ceramsite as the thermal insulation material. Through the experimental study of the chemical composition, material properties and high temperature thermal parameters of five typical ceramsite under different grades, the key parameters such as physical and mechanical properties, phase change temperature, linear expansion coefficient, and thermal conductivity at different temperatures （20-600 ℃） are obtained, and the thermal conductivity and deformation mechanism of ceramsite are revealed, which provide guidance for the design of ceramic particles in the foundation of high temperature heat storage tanks.
关键词
太阳能热发电站 /
热膨胀系数 /
导热系数 /
熔盐储罐基础 /
陶粒 /
相变温度
Key words
solar thermal power station /
coefficient of thermal expansion /
thermal conductivity /
molten salt storage tank foundation /
ceramsite /
phase change temperature
中图分类号：
TK512+.4
TU55+1.1
TU541
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 蔡君, 刘长军, 郭洪辛, 等. 循环载荷作用下的高温熔盐储罐设计分析[J]. 太阳能学报, 2023, 44(4): 516-521.
CAI J, LIU C J, GUO H X, et al.Design and analysis of high temperature molten-salt storage tank under cyclic loading[J]. Acta energiae solaris sinica, 2023, 44(4): 516-521.
[2] 韩伟, 崔凯平, 刘欣, 等. 太阳能热发电站熔盐储罐首次充盐策略研究[J]. 太阳能学报, 2022, 43(3): 282-287.
HAN W, CUI K P, LIU X, et al.Research on first salt filling strategy for storage tanks of csp plant[J]. Acta energiae solaris sinica, 2022, 43(3): 282-287.
[3] GB/T 17431.2—2010, 轻集料及其试验方法第2部分:轻集料试验方法[S].
GB/T 17431.2—2010, Lightweight aggregates and its test methods Part 2: test methods for lightweight aggregates[S]
[4] ASTM C518—04, Standard test method for steady-state thermal transmission properties by means of the heat flow meter apparatus[S].
[5] GB/T 10295—2008, 绝热材料稳态热阻及有关特性的测定热流计法[S].
GB/T 10295—2008, Thermal insulation-determination of steady-state thermal resistance and related properties-Heat flow meter apparatus[S].
[6] YB/T4130—2005, 耐火材料导热系数试验方法(水流量平板法)[S].
YB/T4130—2005, Refractory materials-Determination of thermal conductivity (calorimeter)[S].
[7] GB/T 17911—2018, 耐火纤维制品实验方法[S].
GB/T 17911—2018,Methods of test for refractory fiber products[S].
PDF(4273 KB)
