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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Field Demonstration of Cost Minimizing Load Shifting Controls for 120V Heat Pump Water Heaters in Different Pricing Scenarios
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Combining Generative Modeling and Advanced Control for Building Scenario Generation
Buildings make up a large portion of energy consumption in the U.S. today. Understanding their energy consumption patterns can improve their efficiency, but requires detailed models that rely on incomplete or unknown information. Previous work has shown that artificial intelligence (AI) can be used to predict missing information and even suggest upgrades to improve building efficiency. However, building upgrades may require undesirable upfront costs. Oppositely, advanced control could improve building efficiency with negligible upfront cost. To explore the tradeoffs between these two approaches, in this work we propose a workflow to compute optimal temperature setpoint schedules to minimize energy consumption and operational cost. Results show that modifying the temperature setpoints in a building using model predictive control (MPC) can effectively reduce its energy consumption and operational cost. This optimal operation cannot fully meet a desired goal. However, we show that by considering MPC in addition to component upgrades, a desired goal can be met with significantly less upfront costs.
Developing high performance RF heating scenarios on the WEST tokamak
High power experiments, up to 9.2 MW with LHCD and ICRH, have been carried out in the full tungsten tokamak WEST. Quasi non inductive discharges have been achieved allowing to extend the plasma duration to 53s with stationary conditions in particular with respect to tungsten contamination. Transitions in H mode are obtained lasting up to 4s with weak energy increment at the power crossing the separatrix is close to the threshold. Hot L mode plasmas (Te(0)>3keV) with a confinement time following the ITER L96 scaling are routinely obtained. The weak aspect ratio dependence of this scaling law is confirmed. Tungsten accumulation is generally not an operational issue on WEST. Difficulty of burning through tungsten can prevent from accessing to a hot core plasma in the ramp-up phase or can lead to rapid collapse of the central temperature when radiation is enhanced by a slight decrease of the temperature. Apart few pulses post-boronization, the plasma radiation is rather high (Prad/Ptot~50%) and is dominated by tungsten. This fraction does not vary as the RF power is ramped up and is quite similar in ICRH and/or LHCD heated plasmas. An estimate of the contribution of the RF antennas to the plasma contamination in tungsten is given.
NETL CO2U openLCA LCI Database - Flue Gas Scenario Patch
The NETL CO2U openLCA LCI Database Patch is part of the NETL CO2U LCA Guidance Toolkit for Carbon Utilization funding recipients to meet their LCA requirements. The toolkit includes the following files: NETL CO2U LCA Guidance Document, NETL CO2U openLCA LCI Database, NETL CO2U openLCA Results Contribution Tool, NETL CO2U LCA Documentation Spreadsheet, and NETL CO2U LCA Report Template. The NETL CO2U openLCA LCI Database Patch updates the existing openLCA file that contains data and an example system for funding recipients using openLCA to complete their LCA requirements.
Future Meteorological Year weather data from IPCC Scenarios
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GLOBAL STABILITY OF ELEVATED-QMIN, STEADY-STATE SCENARIO PLASMAS ON DIII-D
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Development of Representative Microgrids Test Cases and Study of Selected Operational Scenarios in the Island of Puerto Rico.
Abstract not provided.
Generation and mitigation of runaway electrons: spatio-temporal effects in dynamic scenarios
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Regulatory Requirements for Scenario Development ? Yucca Mountain (USA).
Abstract not provided.
Objectives and Regulatory Requirements for Scenario Development: US - WIPP.
Abstract not provided.
From Features Events and Processes (FEPs) to Scenarios -Yucca Mountain and Generic (USA).
Abstract not provided.
R&D project RANGERS: from FEPs and Scenarios to Load Cases for Geotechnical Barriers.
Abstract not provided.
Sandia National Laboratories Economic Impact Methodology for Pandemic Scenarios.
Abstract not provided.
Evaluating Material Circular Efficacy of Waste-Management Scenarios Using PV ICE (PV in the Circular Economy) Tool
To meet the nation’s clean energy needs, it is projected that at least 1 TW of solar photovoltaics (PV) will be installed by 2050. To make this transition to solar energy sustainable, planning for a circular economy that maximizes reuse, repair, and recycle is crucial. The objective of this poster is to evaluate the circular efficacy of waste-management interventions, while considering social factors, using PV ICE, a modeling tool that quantifies future mass flows of PV based on dynamic, real-world data.