Evaluation of Alternative Designs for a High Temperature Particle-to-SCO2 Heat Exchanger

Zhiwen Ma, Clifford Ho, Matthew Carlson, Kevin Albrecht, Sheldon Jeter, Clayton Nguyen

Research output: Contribution to conferencePaperpeer-review

17 Scopus Citations

Abstract

This paper presents an evaluation of alternative particle heat-exchanger designs, including moving packed-bed and fluidized-bed designs, for high-temperature heating of a solardriven supercritical CO2 (sCO2) Brayton power cycle. The design requirements for high pressure (> 20 MPa) and high temperature (> 700 °C) operation associated with sCO2 posed several challenges requiring high-strength materials for piping and/or diffusion bonding for plates. Designs from several vendors for a 100 kW-thermal particle-to-sCO2 heat exchanger were evaluated as part of this project. Cost, heat-transfer coefficient, structural reliability, manufacturability, parasitics and heat losses, scalability, compatibility, erosion and corrosion, transient operation, and inspection ease were considered in the evaluation. An analytical hierarchy process was used to weight and compare the criteria for the different design options. The fluidized-bed design fared the best on heat transfer coefficient, structural reliability, scalability and inspection ease, while the moving packed-bed designs fared the best on cost, parasitics and heat losses, manufacturability, compatibility, erosion and corrosion, and transient operation. A 100 kWt shell-and-plate design was ultimately selected for construction and integration with Sandia's falling particle receiver system.

Original languageAmerican English
Number of pages9
DOIs
StatePublished - 2018
EventASME 2018 12th International Conference on Energy Sustainability, ES 2018, collocated with the ASME 2018 Power Conference and the ASME 2018 Nuclear Forum - Lake Buena Vista, United States
Duration: 24 Jun 201828 Jun 2018

Conference

ConferenceASME 2018 12th International Conference on Energy Sustainability, ES 2018, collocated with the ASME 2018 Power Conference and the ASME 2018 Nuclear Forum
Country/TerritoryUnited States
CityLake Buena Vista
Period24/06/1828/06/18

Bibliographical note

Publisher Copyright:
© 2018 American Society of Mechanical Engineers. All rights reserved.

NREL Publication Number

  • NREL/CP-5500-71108

Keywords

  • concentrating solar power
  • fluidized bed
  • heat exchanger
  • moving packed bed
  • supercritical CO2 Brayton power cycle

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