Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver
Abstract
A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External winds entering the receiver at an oblique angle can destabilize the particle curtain and eject particles. A fan and ductwork is located behind the back wall of the receiver and sucks air out through an array of small holes in the back wall. Any entrained particles are separated out by a conventional cyclone device. Then, the air is recirculated back to the top of the receiver by injecting the recycled air through an array of small holes in the receiver's ceiling and upper aperture front wall. Since internal air is recirculated, heat losses are minimized and high receiver efficiency is maintained. Suction-recirculation velocities in the range of 1-5 m/s are sufficient to stabilize the particle curtain against external wind speeds in excess of 10 m/s.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1037763
- Patent Number(s):
- 8109265
- Application Number:
- 12/368,327
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F24 - HEATING F24S - SOLAR HEAT COLLECTORS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Kolb, Gregory J. Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver. United States: N. p., 2012.
Web.
Kolb, Gregory J. Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver. United States.
Kolb, Gregory J. Tue .
"Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver". United States. https://www.osti.gov/servlets/purl/1037763.
@article{osti_1037763,
title = {Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver},
author = {Kolb, Gregory J},
abstractNote = {A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External winds entering the receiver at an oblique angle can destabilize the particle curtain and eject particles. A fan and ductwork is located behind the back wall of the receiver and sucks air out through an array of small holes in the back wall. Any entrained particles are separated out by a conventional cyclone device. Then, the air is recirculated back to the top of the receiver by injecting the recycled air through an array of small holes in the receiver's ceiling and upper aperture front wall. Since internal air is recirculated, heat losses are minimized and high receiver efficiency is maintained. Suction-recirculation velocities in the range of 1-5 m/s are sufficient to stabilize the particle curtain against external wind speeds in excess of 10 m/s.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 07 00:00:00 EST 2012},
month = {Tue Feb 07 00:00:00 EST 2012}
}
Works referenced in this record:
Design and On-Sun Testing of a Solid Particle Receiver Prototype
conference, January 2008
- Siegel, Nathan; Kolb, Greg
- ASME 2008 2nd International Conference on Energy Sustainability, p. 329-334
Central-Station Solar Hydrogen Power Plant
journal, April 2006
- Kolb, Gregory J.; Diver, Richard B.; Siegel, Nathan
- Journal of Solar Energy Engineering, Vol. 129, Issue 2
An Experimental and Numerical Study of Flow and Convective Heat Transfer in a Freely Falling Curtain of Particles
journal, June 1988
- Hruby, J.; Steeper, R.; Evans, G.
- Journal of Fluids Engineering, Vol. 110, Issue 2