A REACTOR TRAIN SYSTEM FOR EFFICIENT SOLAR THERMOCHEMICAL FUEL PRODUCTION

Aniket S. Patankar, Xiao Yu Wu, Wonjae Choi, Harry L. Tuller, Ahmed F. Ghoniem

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thermochemical redox cycles are a promising route for the production of solar fuels. In this paper we present a novel Reactor Train system for efficient conversion of solar thermal energy to hydrogen. This system is capable of recovering thermal energy from redox materials, which is necessary for achieving high efficiency, but has been difficult to realize in practice. The Reactor Train System overcomes technical challenges of high temperature thermochemical reactors like solid conveying and sealing, while enabling continuous, round-the-clock fuel production and incorporating efficient gas transfer processes and thermal energy storage. The Reactor Train is comprised of several identical reactors arranged in a closed loop and cycling between reduction and oxidation steps. In between these steps, the reactors undergo solid heat recovery in a radiative counterflow heat exchanger. We report a heat recovery effectiveness of 75-82% with a train consisting of 56 reactors and a cycle time of 84 minutes. With ceria as the redox material, 23% of the high temperature thermal energy input is converted to hydrogen, while 49% is recovered as intermediate-temperature heat at 750°C.

Original languageEnglish
Title of host publicationEnergy
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885642
DOIs
StatePublished - 2021
EventASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021 - Virtual, Online
Duration: 1 Nov 20215 Nov 2021

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume8B-2021

Conference

ConferenceASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021
CityVirtual, Online
Period1/11/215/11/21

Keywords

  • Heat Recovery
  • Solar Fuels
  • Thermochemical cycle

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