千瓦级氯化盐吸热器样机稳态热性能实验研究

Experimental study on steady-state thermal performance of a kilowatt-scale chloride salt receiver prototype

中文关键词: 塔式光热电站  千瓦级  氯化盐吸热器样机  稳态  热性能

英文关键词: solar power tower  kilowatt-scale  chloride salt receiver prototype  steady-state  thermal performance

中文摘要:

      为探究下一代塔式熔盐吸热器的技术可行性并提供开发经验，本文设计搭建了高温氯化盐循环实验平台，在613~701 ℃的温度范围内研究了氯化盐入口温度、流量和入射能量对千瓦级氯化盐吸热器样机稳态热性能的影响。在研究工况范围内，样机的吸热器效率随入口温度的升高下降了5.46%。随着流量升高，吸热器效率受到强化传热的影响提升了11.22%~12.77%，入口温度较高时提升更显著。吸热器效率随入射能量的增加而升高，受流量和入口温度影响，增幅在0.96%~3.74%之间。

英文摘要:

      To explore the technical feasibility of a chloride salt receiver and offer the relevant guidance for the next-generation solar power tower, a high-temperature chloride salt loop experimental platform was designed and established. Within the temperature ranging from 613 °C to 701 °C, the effects of chloride salt inlet temperature, flow rate, and incident energy on the steady-state thermal performance of the kilowatt-scale chloride salt receiver prototype were investigated. Under the examined conditions, the receiver prototype exhibits a 5.46% decline in the receiver efficiency with the rising inlet temperature. As the flow rate elevating, the receiver efficiency is enhanced by 11.22%~12.77%, which is attributed to the intensified heat transfer. The enhancement becomes more pronounced as the inlet temperature increases. Additionally, the receiver efficiency increases with the rising incident energy, with the improvement ranging from 0.96%~3.74%, which depends on both the flow rate and the inlet temperature.