skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Lifetime modeling for a supercritical CO2-molten salt CSP power block

Abstract

To achieve higher efficiency in the next generation of concentrating solar power (CSP) plants, higher temperatures are needed, which will challenge the materials. One scenario would include molten chloride salts for thermal storage and supercritical CO 2 (sCO 2) for the power block and operating temperatures above 700°C to achieve at least 50% efficiency. For the high pressure (20-30 MPa) sCO 2 conditions, high strength Ni-based alloys will be required above 700°C and an extensive experimental project has confirmed good sCO 2 compatibility for alloys 625, 740H and 282. The data set generated enables more accurate lifetime predictions for 30-year service. Compatibility testing with K-Mg-Na chloride salts has just begun. Initial isothermal capsule results indicate there are promising combinations of salt chemistry, temperature and alloy composition. However, flowing salt testing is needed to evaluate compatibility, which is in progress.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1546548
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Journal Volume: 2126; Conference: SolarPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems - Casablanca, , Morocco - 10/2/2018 8:00:00 AM-10/5/2018 8:00:00 AM
Country of Publication:
United States
Language:
English

Citation Formats

Pint, Bruce A., Raiman, Stephen S., and Keiser, James. Lifetime modeling for a supercritical CO2-molten salt CSP power block. United States: N. p., 2019. Web. doi:10.1063/1.5117668.
Pint, Bruce A., Raiman, Stephen S., & Keiser, James. Lifetime modeling for a supercritical CO2-molten salt CSP power block. United States. doi:10.1063/1.5117668.
Pint, Bruce A., Raiman, Stephen S., and Keiser, James. Mon . "Lifetime modeling for a supercritical CO2-molten salt CSP power block". United States. doi:10.1063/1.5117668. https://www.osti.gov/servlets/purl/1546548.
@article{osti_1546548,
title = {Lifetime modeling for a supercritical CO2-molten salt CSP power block},
author = {Pint, Bruce A. and Raiman, Stephen S. and Keiser, James},
abstractNote = {To achieve higher efficiency in the next generation of concentrating solar power (CSP) plants, higher temperatures are needed, which will challenge the materials. One scenario would include molten chloride salts for thermal storage and supercritical CO2 (sCO2) for the power block and operating temperatures above 700°C to achieve at least 50% efficiency. For the high pressure (20-30 MPa) sCO2 conditions, high strength Ni-based alloys will be required above 700°C and an extensive experimental project has confirmed good sCO2 compatibility for alloys 625, 740H and 282. The data set generated enables more accurate lifetime predictions for 30-year service. Compatibility testing with K-Mg-Na chloride salts has just begun. Initial isothermal capsule results indicate there are promising combinations of salt chemistry, temperature and alloy composition. However, flowing salt testing is needed to evaluate compatibility, which is in progress.},
doi = {10.1063/1.5117668},
journal = {},
issn = {0094--243X},
number = ,
volume = 2126,
place = {United States},
year = {2019},
month = {7}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: