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Title: High Performance Reduction/Oxidation Metal Oxides for Thermochemical Energy Storage (PROMOTES) /CSP

Abstract

Thermochemical energy storage (TCES) offers the potential for greatly increased storage density relative to sensible-only energy storage. Moreover, heat may be stored indefinitely in the form of chemical bonds via TCES, accessed upon demand, and converted to heat at temperatures significantly higher than current solar thermal electricity production technology and is therefore well-suited to more efficient high-temperature power cycles. However, this potential has yet to be realized as no current TCES system satisfies all requirements. This project involves the design, development, and demonstration of a robust and innovative storage cycle based on redox-active metal oxides that are Mixed Ionic-Electronic Conductors (MIECs). We will develop, characterize, and demonstrate a first of its kind 100kWth particle-based TCES system for direct integration with combined-cycle Air Brayton based on the endothermic reduction and exothermic reoxidation of MIECs. Air Brayton cycles require temperatures in the range of 1000-1230 °C for smaller axial flow turbines and are therefore inaccessible to all but the most robust storage solutions such as metal oxides. The choice of MIECs, with exceptional tunability and stability over the specified operating conditions allows us to optimally target this high impact cycle and to introduce the innovation of directly driving the turbine with themore » reacting/heat recovery fluid. The potential for high temperature thermal storage has direct bearing on next-gen CSP, and an appropriate investment for SETO.« less

Authors:
 [1];  [2];  [2];  [3];  [4]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Georgia Inst. of Technology, Atlanta, GA (United States)
  3. Arizona State Univ., Tempe, AZ (United States)
  4. King Saud Univ., Riyadh (Saudi Arabia)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1513523
Report Number(s):
SAND-2018-0802R
660189
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Ambrosini, Andrea, Loutzenhiser, Peter, Jeter, Sheldon, Stechel, Ellen, and Al-Ansary, Hany. High Performance Reduction/Oxidation Metal Oxides for Thermochemical Energy Storage (PROMOTES) /CSP. United States: N. p., 2018. Web. doi:10.2172/1513523.
Ambrosini, Andrea, Loutzenhiser, Peter, Jeter, Sheldon, Stechel, Ellen, & Al-Ansary, Hany. High Performance Reduction/Oxidation Metal Oxides for Thermochemical Energy Storage (PROMOTES) /CSP. United States. doi:10.2172/1513523.
Ambrosini, Andrea, Loutzenhiser, Peter, Jeter, Sheldon, Stechel, Ellen, and Al-Ansary, Hany. Mon . "High Performance Reduction/Oxidation Metal Oxides for Thermochemical Energy Storage (PROMOTES) /CSP". United States. doi:10.2172/1513523. https://www.osti.gov/servlets/purl/1513523.
@article{osti_1513523,
title = {High Performance Reduction/Oxidation Metal Oxides for Thermochemical Energy Storage (PROMOTES) /CSP},
author = {Ambrosini, Andrea and Loutzenhiser, Peter and Jeter, Sheldon and Stechel, Ellen and Al-Ansary, Hany},
abstractNote = {Thermochemical energy storage (TCES) offers the potential for greatly increased storage density relative to sensible-only energy storage. Moreover, heat may be stored indefinitely in the form of chemical bonds via TCES, accessed upon demand, and converted to heat at temperatures significantly higher than current solar thermal electricity production technology and is therefore well-suited to more efficient high-temperature power cycles. However, this potential has yet to be realized as no current TCES system satisfies all requirements. This project involves the design, development, and demonstration of a robust and innovative storage cycle based on redox-active metal oxides that are Mixed Ionic-Electronic Conductors (MIECs). We will develop, characterize, and demonstrate a first of its kind 100kWth particle-based TCES system for direct integration with combined-cycle Air Brayton based on the endothermic reduction and exothermic reoxidation of MIECs. Air Brayton cycles require temperatures in the range of 1000-1230 °C for smaller axial flow turbines and are therefore inaccessible to all but the most robust storage solutions such as metal oxides. The choice of MIECs, with exceptional tunability and stability over the specified operating conditions allows us to optimally target this high impact cycle and to introduce the innovation of directly driving the turbine with the reacting/heat recovery fluid. The potential for high temperature thermal storage has direct bearing on next-gen CSP, and an appropriate investment for SETO.},
doi = {10.2172/1513523},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {1}
}