Abstract
U.S. industry sectors accounted for 33% of total energy consumption in 2021 according to the Energy Information Agency. Industrial process heat accounts for 70% of the industry energy use with application temperatures ranging from 60 degrees - 1100 degreesC. Industrial processes heavily rely on fossil fuels and differ widely in operating conditions and load requirements, which makes them difficult to standardize and imposes challenges in decarbonization. To this end, we have developed a particle-based thermal energy storage (TES) technology integrated with renewable energy sources from concentrating solar thermal power (CST) and/or photovoltaic (PV) power. The particle TES system uses low-cost and highly stable silica sand and can provide industrial process heat (IPH) over a wide range of temperatures. The TES system can serve as a uniform energy supply configuration integrated with renewable power to supply 24/7 heat for industry decarbonization. This paper focuses on the Levelized Cost of Heat (LCOH) and considers various scenarios of combined on-site CST, PV, electric heater, and TES system capacities to determine configurations of the CST/PV/TES system that could fulfill the heat demand with minor contributions from grid backup. The paper shows the economic potential of the particle-TES for IPH applications and investigates the sensitivity of the LCOH to various economic parameters including the capital costs of the particle-TES and solar tower systems.
Original language | American English |
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Number of pages | 10 |
DOIs | |
State | Published - 2024 |
Event | ASME 18th International Conference on Energy Sustainability - Anaheim, CA Duration: 15 Jul 2024 → 17 Jul 2024 |
Conference
Conference | ASME 18th International Conference on Energy Sustainability |
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City | Anaheim, CA |
Period | 15/07/24 → 17/07/24 |
NREL Publication Number
- NREL/CP-5700-88559
Keywords
- concentrated solar thermal
- industrial process heat
- particle thermal energy storage
- thermal energy storage