The "Hybrid and Integrated Energy Systems" session on Monday during the ANS 2020 Virtual Winter Meeting was sponsored by the Operations and Power Division and chaired by Piyush Sabharwall of Idaho National Laboratory.
Replacing infrastructure: M. Scott Greenwood of Oak Ridge National Laboratory gave an overview of an investigation designed to assist in the conceptual design and analysis for replacing the existing energy/steam production infrastructure at the Eastman Chemical Company site in Kingsport, Tenn. The infrastructure would be replaced with an integrated energy system.
The researchers found that the capabilities of advanced reactors appear to closely match with Eastman's requirements, but that the candidate reactor technologies exist at various stages of readiness.
Echo state networks: Samuel G. Dotson, of the University of Illinois—Urbana-Champaign, presented results from his research about the possibility of using echo state networks (ESNs) for renewable energy forecasting. He found that ESNs can predict dynamic systems and are improved by shorter prediction windows and coupled quantities, such as sun angle and total demand for electricity.
Dotson added that future work in this area includes identifying better coupled quantities for wind generation, comparing ESNs to other methods for speed and accuracy, and determining the required prediction window for different reactor types.
Stored hydrogen: Abdalla Abou-Jaoude, of Idaho National Laboratory, presented research from his paper, “Preliminary Economic Evaluation of Hydrogen Co-Generation at a Nuclear Power Plant in a Regulated Market.”
He found that during periods of high-grid electricity demand, stored hydrogen can be sent to the end-user, while electricity generated by the nuclear plant is diverted back to the grid. Under the market assumptions considered here, the hydrogen break-even point is found to be around $1.8/kg-H2. Abou-Jaoude added that the high-temperature steam electrolyzer is competitive up to 400 MWe, assuming a dynamic hydrogen market response where the price is dictated by natural gas steam methane reforming production.