Prototype Testing of a Centrifugal Particle Receiver for High-Temperature Concentrating Solar Applications

A novel concept of a particle receiver for high-temperature solar applications was developed and evaluated in the present work. The so-called Centrifugal Particle Receiver (CentRec) uses small bauxite particles as absorber, heat transfer, and storage medium at the same time. Due to advantageous optical and thermal properties, the particles can be heated up to 1000 °C without sintering in the storage. High thermal efficiencies at high outlet temperatures are expected indicating a promising way for cost reduction in solar power tower applications. A 15kWth prototype was designed, built, and tested in order to demonstrate the feasibility and potential of the proposed concept. Extensive high flux experiments were conducted, investigating the thermal receiver performance and efficiency. For an input flux of 670 kW m², the target outlet temperature of 900 °C at a receiver efficiency of about 75% was successfully demonstrated.

[1]  C. Ho,et al.  Modeling On-Sun Tests of a Prototype Solid Particle Receiver for Concentrating Solar Power Processes and Storage , 2009 .

[2]  Nathan P. Siegel,et al.  Design and On-Sun Testing of a Solid Particle Receiver Prototype , 2008 .

[3]  J. Taylor.  An Introduction to Error Analysis , 1982 .

[4]  Y. S. Touloukian.  Thermophysical properties of matter , 1970 .

[5]  Robert Pitz-Paal,et al.  Assessment of a falling solid particle receiver with numerical simulation , 2015 .

[6]  Ralf Uhlig,et al.  Proof of Concept Test of a Centrifugal Particle Receiver , 2014 .

[7]  Mingjiang Ni,et al.  Simulation and experimental study on a spiral solid particle solar receiver , 2014 .

[8]  J. W. Griffin,et al.  Optical properties of solid particle receiver materials: I. Angular scattering and extinction characteristics of Norton Masterbeads® , 1986 .

[9]  Robert Pitz-Paal,et al.  Direct absorption receivers for high temperatures , 2011 .

[10]  Brian D. Iverson,et al.  Review of high-temperature central receiver designs for concentrating solar power , 2014 .

[11]  Robert Pitz-Paal,et al.  Assessment of Solar Power Tower Driven Ultrasupercritical Steam Cycles Applying Tubular Central Receivers With Varied Heat Transfer Media , 2010 .

[12]  Reiner Buck,et al.  Face-Down Solid Particle Receiver Using Recirculation , 2011 .

[13]  Yitung Chen,et al.  Review of study on solid particle solar receivers , 2010 .

[14]  G. Flamant.  Theoretical and experimental study of radiant heat transfer in a solar fluidized‐bed receiver , 1982 .