Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction

Abhishek Singh, Justin Lapp, Johannes Grobbel, Stefan Brendelberger, Jan P. Reinhold, Lamark Olivera, Ivan Ermanoski, Nathan P. Siegel, Anthony McDaniel, Martin Roeb, Christian Sattler

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Recently a novel design concept of a reactor—the cascading pressure reactor—for the thermochemical fuel production, using a solar-driven redox cycle, was proposed. In this concept, thermal reduction of metal oxide particles is completed in multiple stages, at successively lower pressures. This leads to an order of magnitude decrease in the pumping power demand as compared to a single stage, which in turn increases the solar to fuel efficiency. An important step in the process is the transfer of heat in the form of concentrated solar radiation to the particles, while providing reducing conditions in the space surrounding the particles. In this context, a novel system for heating and reducing particles, with a focus on operating at the small prototype scale (below 20 kW), is investigated. The key goals of the system are continuous operation, uniform heating of the reactive material, the ability to heat reactive material to 1723 K or higher, and flexibility of control. These criteria have led to the conceptual design of a continuous thin-layer particle conveyor, contained in an apertured, windowed cavity and enclosed in a vacuum chamber. This chamber, in combination with a water-splitting chamber and other system components, allows the possibility of testing multiple redox materials without any significant change in the reactor design. The present work shows a potential design for the proposed component, feasibility tests of the physics of moving particles with relevant materials, and series of interconnected numerical models and calculations that can be used to size such a system for the appropriate scales of power and mass flow rates. The use of a unified design strategy has led to efficient development of the system. Experimental investigations of the horizontal motion plate allowed effective determination of motion profiles and bed uniformity. The most important factors determined through the modeling effort were the aperture diameter, which serves as the coupling point between the solar simulator lamp array and the cavity particle heating, and the particle bed thickness, which has a strong effect on the outlet temperature of the particles.

Original languageEnglish (US)
Pages (from-to)365-376
Number of pages12
JournalSolar Energy
Volume157
DOIs
StatePublished - Nov 15 2017

Fingerprint

Oxides
Metals
Heating
Temperature
Conceptual design
Solar radiation
Electric lamps
Numerical models
Physics
Simulators
Flow rate
Vacuum
Water
Testing
Hot Temperature
Oxidation-Reduction

Keywords

  • Metal oxide
  • Pressure cascade
  • Reduction reactor
  • Thermochemical

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction. / Singh, Abhishek; Lapp, Justin; Grobbel, Johannes; Brendelberger, Stefan; Reinhold, Jan P.; Olivera, Lamark; Ermanoski, Ivan; Siegel, Nathan P.; McDaniel, Anthony; Roeb, Martin; Sattler, Christian.

In: Solar Energy, Vol. 157, 15.11.2017, p. 365-376.

Research output: Contribution to journalArticle

Singh, A, Lapp, J, Grobbel, J, Brendelberger, S, Reinhold, JP, Olivera, L, Ermanoski, I, Siegel, NP, McDaniel, A, Roeb, M & Sattler, C 2017, 'Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction', Solar Energy, vol. 157, pp. 365-376. https://doi.org/10.1016/j.solener.2017.08.040
Singh, Abhishek ; Lapp, Justin ; Grobbel, Johannes ; Brendelberger, Stefan ; Reinhold, Jan P. ; Olivera, Lamark ; Ermanoski, Ivan ; Siegel, Nathan P. ; McDaniel, Anthony ; Roeb, Martin ; Sattler, Christian. / Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction. In: Solar Energy. 2017 ; Vol. 157. pp. 365-376.
@article{9ddd002910984505a3194808cd496044,
title = "Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction",
abstract = "Recently a novel design concept of a reactor—the cascading pressure reactor—for the thermochemical fuel production, using a solar-driven redox cycle, was proposed. In this concept, thermal reduction of metal oxide particles is completed in multiple stages, at successively lower pressures. This leads to an order of magnitude decrease in the pumping power demand as compared to a single stage, which in turn increases the solar to fuel efficiency. An important step in the process is the transfer of heat in the form of concentrated solar radiation to the particles, while providing reducing conditions in the space surrounding the particles. In this context, a novel system for heating and reducing particles, with a focus on operating at the small prototype scale (below 20 kW), is investigated. The key goals of the system are continuous operation, uniform heating of the reactive material, the ability to heat reactive material to 1723 K or higher, and flexibility of control. These criteria have led to the conceptual design of a continuous thin-layer particle conveyor, contained in an apertured, windowed cavity and enclosed in a vacuum chamber. This chamber, in combination with a water-splitting chamber and other system components, allows the possibility of testing multiple redox materials without any significant change in the reactor design. The present work shows a potential design for the proposed component, feasibility tests of the physics of moving particles with relevant materials, and series of interconnected numerical models and calculations that can be used to size such a system for the appropriate scales of power and mass flow rates. The use of a unified design strategy has led to efficient development of the system. Experimental investigations of the horizontal motion plate allowed effective determination of motion profiles and bed uniformity. The most important factors determined through the modeling effort were the aperture diameter, which serves as the coupling point between the solar simulator lamp array and the cavity particle heating, and the particle bed thickness, which has a strong effect on the outlet temperature of the particles.",
keywords = "Metal oxide, Pressure cascade, Reduction reactor, Thermochemical",
author = "Abhishek Singh and Justin Lapp and Johannes Grobbel and Stefan Brendelberger and Reinhold, {Jan P.} and Lamark Olivera and Ivan Ermanoski and Siegel, {Nathan P.} and Anthony McDaniel and Martin Roeb and Christian Sattler",
year = "2017",
month = "11",
day = "15",
doi = "10.1016/j.solener.2017.08.040",
language = "English (US)",
volume = "157",
pages = "365--376",
journal = "Solar Energy",
issn = "0038-092X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Design of a pilot scale directly irradiated, high temperature, and low pressure moving particle cavity chamber for metal oxide reduction

AU - Singh, Abhishek

AU - Lapp, Justin

AU - Grobbel, Johannes

AU - Brendelberger, Stefan

AU - Reinhold, Jan P.

AU - Olivera, Lamark

AU - Ermanoski, Ivan

AU - Siegel, Nathan P.

AU - McDaniel, Anthony

AU - Roeb, Martin

AU - Sattler, Christian

PY - 2017/11/15

Y1 - 2017/11/15

N2 - Recently a novel design concept of a reactor—the cascading pressure reactor—for the thermochemical fuel production, using a solar-driven redox cycle, was proposed. In this concept, thermal reduction of metal oxide particles is completed in multiple stages, at successively lower pressures. This leads to an order of magnitude decrease in the pumping power demand as compared to a single stage, which in turn increases the solar to fuel efficiency. An important step in the process is the transfer of heat in the form of concentrated solar radiation to the particles, while providing reducing conditions in the space surrounding the particles. In this context, a novel system for heating and reducing particles, with a focus on operating at the small prototype scale (below 20 kW), is investigated. The key goals of the system are continuous operation, uniform heating of the reactive material, the ability to heat reactive material to 1723 K or higher, and flexibility of control. These criteria have led to the conceptual design of a continuous thin-layer particle conveyor, contained in an apertured, windowed cavity and enclosed in a vacuum chamber. This chamber, in combination with a water-splitting chamber and other system components, allows the possibility of testing multiple redox materials without any significant change in the reactor design. The present work shows a potential design for the proposed component, feasibility tests of the physics of moving particles with relevant materials, and series of interconnected numerical models and calculations that can be used to size such a system for the appropriate scales of power and mass flow rates. The use of a unified design strategy has led to efficient development of the system. Experimental investigations of the horizontal motion plate allowed effective determination of motion profiles and bed uniformity. The most important factors determined through the modeling effort were the aperture diameter, which serves as the coupling point between the solar simulator lamp array and the cavity particle heating, and the particle bed thickness, which has a strong effect on the outlet temperature of the particles.

AB - Recently a novel design concept of a reactor—the cascading pressure reactor—for the thermochemical fuel production, using a solar-driven redox cycle, was proposed. In this concept, thermal reduction of metal oxide particles is completed in multiple stages, at successively lower pressures. This leads to an order of magnitude decrease in the pumping power demand as compared to a single stage, which in turn increases the solar to fuel efficiency. An important step in the process is the transfer of heat in the form of concentrated solar radiation to the particles, while providing reducing conditions in the space surrounding the particles. In this context, a novel system for heating and reducing particles, with a focus on operating at the small prototype scale (below 20 kW), is investigated. The key goals of the system are continuous operation, uniform heating of the reactive material, the ability to heat reactive material to 1723 K or higher, and flexibility of control. These criteria have led to the conceptual design of a continuous thin-layer particle conveyor, contained in an apertured, windowed cavity and enclosed in a vacuum chamber. This chamber, in combination with a water-splitting chamber and other system components, allows the possibility of testing multiple redox materials without any significant change in the reactor design. The present work shows a potential design for the proposed component, feasibility tests of the physics of moving particles with relevant materials, and series of interconnected numerical models and calculations that can be used to size such a system for the appropriate scales of power and mass flow rates. The use of a unified design strategy has led to efficient development of the system. Experimental investigations of the horizontal motion plate allowed effective determination of motion profiles and bed uniformity. The most important factors determined through the modeling effort were the aperture diameter, which serves as the coupling point between the solar simulator lamp array and the cavity particle heating, and the particle bed thickness, which has a strong effect on the outlet temperature of the particles.

KW - Metal oxide

KW - Pressure cascade

KW - Reduction reactor

KW - Thermochemical

UR - http://www.scopus.com/inward/record.url?scp=85027859893&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027859893&partnerID=8YFLogxK

U2 - 10.1016/j.solener.2017.08.040

DO - 10.1016/j.solener.2017.08.040

M3 - Article

AN - SCOPUS:85027859893

VL - 157

SP - 365

EP - 376

JO - Solar Energy

JF - Solar Energy

SN - 0038-092X

ER -