Steady-Flow-Type Particle Receiver for High-Temperature Solar Thermal Storage

9th Edition of the International SOLARIS Conference

Matsubara, Koji^1^4 ; Suzuki, Yudai^2^4 ; Sakurai, Atsushi^1^4 ; Bellan, Selvan^3^4 ; Kodama, Tatsuya^1^4

Faculty of Engineering, Niigata University, Niigata, Japan^1

Graduate School of Science and Technology, Niigata University, Niigata, Japan^2

Center for Transdisciplinary Research, Niigata University, Niigata, Japan^3

Pacific Rim Solar Fuels Research Center, Niigata University, Niigata, Japan^4

关键词: Circulating fluidized bed;    Concentrated solar power;    Electricity generation;    Experimental apparatus;    Experimental set up;    simulation;    Solar thermal storages;    Sun simulator;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/556/1/012059/pdf
DOI  :  10.1088/1757-899X/556/1/012059

来源: IOP

【 摘 要 】

The concentrated solar power is utilized for industrial thermal usage, electricity generation and fuel production. To increase the solar thermal temperature is essential for enhancing the thermal efficiency of the energy conversion and for widening application. The synthetic oil, widely used for solar thermal storage, pylorizes at 400 °C, and this cannot be used for very high temperatures. The authors used quartz sand as thermal storage medium in the fluidized bed receiver, and achieved the thermal receiver temperatures beyond 1000 °C in the previous report. The research work was further made on using the particle steady flow for high-temperature solar thermal storage. The steady-flow-type particle receiver was designed through visualization of cold model and numerical simulation. The experimental apparatus was fabricated and tested using beam-down sun simulator of 1.0 kWth. The apparatus comprises of the internal-circulating fluidized bed receiver placed between a loop seal with an inlet port and another loop seal with a weir and an exit port of the particles. The tested particles are quartz sand of 0.1 - 0.2 mm and fused brown alumina of 0.09 - 0.1 mm. The experimental set up produces hot particles of quartz sand at 428°C and those of fused brown alumina at 491°C. The highly efficient steady-flow-type particle receiver created steady particle flow smoothly. This apparatus takes in the concentrated light through the quartz window to continuously discharge the particles at high temperatures beyond the criterion in synthesis oil (400°) for solar thermal storage.