H. Evan Bush


H. Evan Bush

R&D, S&E Systems Engineering


Dr. H. Evan Bush is an R&D, S&E Mechanical Engineer and Senior Member of the Technical Staff in the Concentrating Solar Technologies group. Evan’s research focuses on solar thermochemical cycles, materials, and reactors for thermal energy storage, H2 generation, and the production of chemical commodities such as ammonia. His research also includes the characterization and control of high-temperature particles for sensible energy transport and storage. Evan has worked on projects relating to CSP systems/technoeconomic modeling; solar reactor engineering and computational modeling; PV solar glint and glare prediction; CSP mirror characterization; and digital imaging and ray tracing to characterize high temperature, high flux systems.


  • Bachelor of Science, Mechanical Engineering, University of Louisville, May 2014
  • Master of Science, Mechanical Engineering, Georgia Institute of Technology, May 2017
  • Doctor of Philosophy, Mechanical Engineering, Georgia Institute of Technology, May 2019

Research Interests

  • Solar thermochemistry
  • High-Flux solar simulators
  • Computational heat and mass transfer modeling
  • Image processing for CSP applications
  • Radiative heat transfer
  • Thermodynamic modeling
  • Energy storage technologies
  • High temperature systems


  • Bush, H. E., Nhu Pailes Nguyen, Tyler Farr, Peter G. Loutzenhiser, and Andrea Ambrosini. “Air separation via a two-step solar thermochemical cycle based on (Ba, La)xSr1-xFeO3-δ: Thermodynamic analysis.” Solid State Ionics 368 (2021): 115692.
  • Bush, H. E., Andrew J. Schrader, and Peter G. Loutzenhiser. “Pairing directional solar inputs from ray tracing to solar receiver/reactor heat transfer models on unstructured meshes: Development and case studies.” Journal of Solar Energy Engineering 143, no. 3 (2021).
  • Bush, H. E., R. Datta, P. G. Loutzenhiser, “Aluminum-doped strontium ferrites for a two-step solar thermochemical air separation cycle: Thermodynamic characterization and cycle analysis,” Sol. Energy 188, (2019): 775-786.
  • Bush, H. E., P. G. Loutzenhiser, “Solar electricity via an Air Brayton cycle with an integrated two-step thermochemical cycle for heat storage based on Fe2O3/Fe3O4 redox reactions: Thermodynamic and kinetic analyses,” Sol. Energy 174, (2019): 617-627.
  • Bush, H. E., K. P. Schlichting, R. J. Gill, S. M. Jeter, and P.G. Loutzenhiser, “Design and Characterization of a Novel Upward Flow Reactor for the Study of High-Temperature Thermal Reduction for Solar-Driven Processes,” Journal of Solar Energy Engineering 139, no. 5 (2017): 051004-051004-051011.