Dynamic analysis of concentrated solar supercritical CO2-based power generation closed-loop cycle
Abstract
Here, the dynamic behavior of a concentrated solar power (CSP) supercritical CO2 cycle is studied under different seasonal conditions. The system analyzed is composed of a central receiver, hot and cold thermal energy storage units, a heat exchanger, a recuperator, and multi-stage compression-expansion subsystems with intercoolers and reheaters between compressors and turbines respectively. Energy models for each component of the system are developed in order to optimize operating and design parameters such as mass flow rate, intermediate pressures and the effective area of the recuperator to lead to maximum efficiency. Our results show that the parametric optimization leads the system to a process efficiency of about 21 % and a maximum power output close to 1.5 MW. The thermal energy storage allows the system to operate for several hours after sunset. This operating time is approximately increased from 220 to 480 minutes after optimization. The hot and cold thermal energy storage also lessens the temperature fluctuations by providing smooth changes of temperatures at the turbines and compressors inlets. Our results indicate that concentrated solar systems using supercritical CO2 could be a viable alternative to satisfying energy needs in desert areas with scarce water and fossil fuel resources.
- Authors:
-
- Florida State Univ., Tallahassee, FL (United States). Dept. of Mechanical Engineering, Energy and Sustainability Center, Center for Advanced Power Systems; Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Florida State Univ., Tallahassee, FL (United States). Dept. of Mechanical Engineering, Energy and Sustainability Center, Center for Advanced Power Systems
- Publication Date:
- Research Org.:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1357496
- Alternate Identifier(s):
- OSTI ID: 1694048
- Report Number(s):
- INL/JOU-15-36901
Journal ID: ISSN 1359-4311; PII: S1359431115010868
- Grant/Contract Number:
- AC07-05ID14517
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Thermal Engineering
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: C; Journal ID: ISSN 1359-4311
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 14 SOLAR ENERGY; Concentrating Solar Power; Dynamic analysis; Efficiency; Supercritical CO2; Thermal Energy Storage
Citation Formats
Osorio, Julian D., Hovsapian, Rob, and Ordonez, Juan C. Dynamic analysis of concentrated solar supercritical CO2-based power generation closed-loop cycle. United States: N. p., 2016.
Web. doi:10.1016/j.applthermaleng.2015.10.039.
Osorio, Julian D., Hovsapian, Rob, & Ordonez, Juan C. Dynamic analysis of concentrated solar supercritical CO2-based power generation closed-loop cycle. United States. https://doi.org/10.1016/j.applthermaleng.2015.10.039
Osorio, Julian D., Hovsapian, Rob, and Ordonez, Juan C. Fri .
"Dynamic analysis of concentrated solar supercritical CO2-based power generation closed-loop cycle". United States. https://doi.org/10.1016/j.applthermaleng.2015.10.039. https://www.osti.gov/servlets/purl/1357496.
@article{osti_1357496,
title = {Dynamic analysis of concentrated solar supercritical CO2-based power generation closed-loop cycle},
author = {Osorio, Julian D. and Hovsapian, Rob and Ordonez, Juan C.},
abstractNote = {Here, the dynamic behavior of a concentrated solar power (CSP) supercritical CO2 cycle is studied under different seasonal conditions. The system analyzed is composed of a central receiver, hot and cold thermal energy storage units, a heat exchanger, a recuperator, and multi-stage compression-expansion subsystems with intercoolers and reheaters between compressors and turbines respectively. Energy models for each component of the system are developed in order to optimize operating and design parameters such as mass flow rate, intermediate pressures and the effective area of the recuperator to lead to maximum efficiency. Our results show that the parametric optimization leads the system to a process efficiency of about 21 % and a maximum power output close to 1.5 MW. The thermal energy storage allows the system to operate for several hours after sunset. This operating time is approximately increased from 220 to 480 minutes after optimization. The hot and cold thermal energy storage also lessens the temperature fluctuations by providing smooth changes of temperatures at the turbines and compressors inlets. Our results indicate that concentrated solar systems using supercritical CO2 could be a viable alternative to satisfying energy needs in desert areas with scarce water and fossil fuel resources.},
doi = {10.1016/j.applthermaleng.2015.10.039},
journal = {Applied Thermal Engineering},
number = C,
volume = 93,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 2016},
month = {Fri Jan 01 00:00:00 EST 2016}
}
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