A study of solid particle flow characterization in solar particle receiver
- Mechanical Engineering Department, Hanyang University, 1271 Sa-3 dong, Sangnok-gu, Ansan, Kyeonggi-do, 426-791 (Korea)
- Sandia National Laboratories Solar Technologies Department, P.O. Box 5800, Albuquerque, NM 87185-1127 (United States)
- Mechanical Engineering Department, University of Nevada Las Vegas, 4505 Maryland Pkwy Las Vegas, NV 89154-4027 (United States)
The solid particle receiver (SPR) is a direct absorption receiver in which solar energy heats a curtain of falling ceramic particle to a temperature in excess of 1000 C. A small scale test platform was built to investigate particle flow properties. The curtain was comprised of approximately 697 {mu}m ceramic particles that were dropped within the receiver cavity of the test platform. Tests were conducted to experimentally determine the distribution of particles velocity, curtain thickness, and curtain opacity along a drop length of approximately 3 m. Velocity data were measured using a high speed digital camera to obtain images of the particle flow at 1000 frames per second with an exposure time of 100 {mu}s. Five mass flow rates ranging from 1 kg/s-m to 22 kg/s-m were examined, and it was found that all flows approached a terminal velocity of about 6-7 m/s in a vertical drop distance of 3 m. The experimental results were validated with computational results and were found in excellent agreement with the simulation results. In addition, a similar study was performed with various sizes of the particles to better understand how the particle flow characteristics were affected by the size of the particles. (author)
- OSTI ID:
- 21227412
- Journal Information:
- Solar Energy, Journal Name: Solar Energy Journal Issue: 10 Vol. 83; ISSN 0038-092X; ISSN SRENA4
- Country of Publication:
- United States
- Language:
- English
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