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Results for “POTENTIAL ENERGY”

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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At least 19 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2015

Dissociation energies and potential energy functions for the ground X {sup 1}Σ{sup +} and “avoided-crossing” A {sup 1}Σ{sup +} states of NaH

A direct-potential-fit analysis of all accessible data for the A {sup 1}Σ{sup +} − X {sup 1}Σ{sup +} system of NaH and NaD is used to determine analytic potential energy functions incorporating the correct theoretically predicted long-range behaviour. These potentials represent all of the data (on average) within the experimental uncertainties and yield an improved estimate for the ground-state NaH well depth of D{sub e} = 15797.4 (±4.3) cm{sup −1}, which is ∼20 cm{sup −1} smaller than the best previous estimate. The present analysis also yields the first empirical determination of centrifugal (non-adiabatic) and potential-energy (adiabatic) Born-Oppenheimer breakdown correction functions for this system, with the latter showing that the A-state electronic isotope shift is −1.1(±0.6) cm{sup −1} going from NaH to NaD.

74 ATOMIC AND MOLECULAR PHYSICS↗
DOE OSTI2018

Permutation invariant polynomial neural network approach to fitting potential energy surfaces. IV. Coupled diabatic potential energy matrices

A machine learning method is proposed for representing the elements of diabatic potential energy matrices (PEMs) with high fidelity. This is an extension of the so-called permutation invariant polynomial-neural network (PIP-NN) method for representing adiabatic potential energy surfaces. While for one-dimensional irreducible representations the diagonal elements of a diabatic PEM are invariant under exchange of identical nuclei in a molecular system, the off-diagonal elements require special symmetry consideration, particularly in the presence of a conical intersection. A multiplicative factor is introduced to take into consideration the particular symmetry properties while maintaining the PIP-NN framework. Here, we demonstrate here that the extended PIP-NN approach is accurate in representing diabatic PEMs, as evidenced by small fitting errors and by the reproduction of absorption spectra and product branching ratios in both H 2 O$(\tilde{X} / \tilde{B})$ and NH 3 $(\tilde{X} $/Ã) non-adiabatic photodissociation.

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Savings Opportunities in U.S. Cement Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. cement manufacturing. The study relies on multiple sources to estimate the energy used in the production of four cement manufacturing sub-processes, representing 97% of sector-wide energy consumption in 2010. Energy savings opportunities for the sub-processes are based on technologies currently in use or under development; these potential savings are then extrapolated to estimate sector-wide energy savings opportunity.

energy energy bandwidth study, cement, advanced ma↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Savings Opportunities in U.S. Food and Beverage Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. food and beverage products manufacturing. The study relies on multiple sources to estimate the energy used for processes in six food and beverage manufacturing sub-sectors, representing 40% of sector-wide energy consumption in 2010. Energy savings opportunities for the processes studied in the six sub-sectors are based on technologies currently in use or under development; these potential savings are then extrapolated to estimate sector-wide energy savings opportunity.

energy energy bandwidth study, food, beverage, adv↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Savings Opportunities in U.S. Plastics and Rubber Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. plastics and rubber products manufacturing. The study relies on multiple sources to estimate the energy used for processes in five plastics and rubber manufacturing subareas, representing 97% of sector-wide energy consumption in 2010. Energy savings opportunities for the subareas studied for various plastics and rubber products are based on technologies currently in use or under development; these potential savings are then extrapolated to estimate sector-wide energy savings opportunity.

energy energy bandwidth study, plastics, rubber, a↗
DOE OSTI2015

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Pulp and Paper Manufacturing

Energy bandwidth studies of U.S. manufacturing sectors can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. pulp and paper manufacturing. The study relies on multiple sources to estimate the energy used in six individual process areas, representing 52% of sector-wide energy consumption. Energy savings opportunities for individual processes are based on technologies currently in use or under development; the potential savings are then extrapolated to estimate sector-wide energy savings opportunity

AMO, 2015↗
DOE OSTI2015

Bandwidth Study on Energy Use and Potential Energy Savings Opportunities in U.S. Petroleum Refining

Energy bandwidth studies of U.S. manufacturing sectors can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. petroleum refining. The study relies on multiple sources to estimate the energy used in nine individual process areas, representing 68% of sector-wide energy consumption. Energy savings opportunities for individual processes are based on technologies currently in use or under development; these potential savings are then extrapolated to estimate sector-wide energy savings opportunity.

AMO↗
DOE OSTI2015

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Iron and Steel Manufacturing

Energy bandwidth studies of U.S. manufacturing sectors can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. iron and steel manufacturing. The study relies on multiple sources to estimate the energy used in six individual process areas and select subareas, representing 82% of sector-wide energy consumption. Energy savings opportunities for individual processes and subareas are based on technologies currently in use or under development; the potential savings are then extrapolated to estimate sector-wide energy savings opportunity.

AMO↗
DOE OSTI2015

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Chemical Manufacturing

Energy bandwidth studies of U.S. manufacturing sectors can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. chemical manufacturing. The study relies on multiple sources to estimate the energy used in the production of 74 individual chemicals, representing 57% of sector-wide energy consumption. Energy savings opportunities for individual chemicals and for 15 subsectors of chemicals manufacturing are based on technologies currently in use or under development; these potential savings are then extrapolated to estimate sector-wide energy savings opportunity.

AMO, 2015↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Savings Opportunities in U.S. Titanium Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study is one of a series of six energy bandwidth studies on lightweight structural materials manufacturing. The study examines energy consumption and potential energy savings opportunities in U.S. titanium manufacturing. The study relies on multiple sources to estimate the energy used in the manufacturing of the lightweight material for four application areas (automotive, wind energy, aerospace, and pressure vessels), accounting for approximately 75% of overall U.S. titanium production in 2010. Energy savings opportunities for the three manufacturing subareas studied are based on technologies currently in use or under development.

energy bandwidth study, titanium, advanced manufac↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Savings Opportunities in U.S. Seawater Desalination Systems

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. industrial sectors. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. seawater desalination plants. The study relies on multiple sources to estimate the energy used for five seawater desalination unit operations. Energy savings opportunities for the unit operations are based on technologies currently in use or under development. This study also examines the energy consumption implications of wider adoption of seawater desalination to meet increased U.S. municipal water demand for two scenarios based on the bandwidth analysis. This report builds upon the foundational information and analysis approach described in Volume 1: Survey of Available Information in Support of the Energy-Water Bandwidth Study of Desalination Systems.

energy energy bandwidth study, desalination, desal↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Aluminum Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study is one of a series of six energy bandwidth studies on lightweight structural materials manufacturing. The study examines energy consumption and potential energy savings opportunities in U.S. aluminum manufacturing. The study relies on multiple sources to estimate the energy used in the manufacturing of the material for lightweighting applications (automotive and aerospace), accounting for approximately 28% of overall U.S. aluminum production in 2010. Energy savings opportunities for the five manufacturing subareas studied are based on technologies currently in use or under development.

energy energy bandwidth study, aluminum, advanced ↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Carbon Fiber Reinforced Polymer Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study is one of a series of six energy bandwidth studies on lightweight structural materials manufacturing. The study examines energy consumption and potential energy savings opportunities in U.S. carbon fiber reinforced polymer composites manufacturing. The study relies on multiple sources to estimate the energy used in the manufacturing of the lightweight material for four application areas (automotive, wind energy, aerospace, and pressure vessels), accounting for approximately 51% of overall U.S. carbon fiber production in 2010. Energy savings opportunities for the six manufacturing sub-processes studied are based on technologies currently in use or under development.

energy energy bandwidth study, carbon fiber, reinf↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Magnesium Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study is one of a series of six energy bandwidth studies on lightweight structural materials manufacturing. The study examines energy consumption and potential energy savings opportunities in U.S. magnesium manufacturing. The study relies on multiple sources to estimate the energy used in the manufacturing of the lightweight material for four application areas (automotive, wind energy, aerospace, and pressure vessels), accounting for approximately 32% of overall U.S. magnesium production in 2010. Energy savings opportunities for the four manufacturing subareas studied are based on technologies currently in use or under development.

energy energy bandwidth study, magnesium, advanced↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Advanced High Strength Steels Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study is one of a series of six energy bandwidth studies on lightweight structural materials manufacturing. The study examines energy consumption and potential energy savings opportunities in U.S. advanced high strength steel (AHSS) manufacturing. The study relies on multiple sources to estimate the energy used in the manufacturing of the lightweight material for automotive applications, accounting for nearly 100% of U.S. AHSS production in 2010. Energy savings opportunities for the six manufacturing subareas studied are based on technologies currently in use or under development.

energy bandwidth study, advanced high strength ste↗
DOE OSTI2017

Bandwidth Study on Energy Use and Potential Energy Saving Opportunities in U.S. Glass Fiber Reinforced Polymer Manufacturing

Energy bandwidth studies can serve as foundational references in framing the range (or bandwidth) of potential energy savings opportunities in U.S. manufacturing. This bandwidth study is one of a series of six energy bandwidth studies on lightweight structural materials manufacturing. The study examines energy consumption and potential energy savings opportunities in U.S. glass fiber reinforced polymer composites manufacturing. The study relies on multiple sources to estimate the energy used in the manufacturing of the lightweight material for four application areas (automotive, wind energy, aerospace, and pressure vessels), accounting for approximately 47% of overall U.S. glass fiber production in 2010. Energy savings opportunities for the six manufacturing sub-processes studied are based on technologies currently in use or under development.

energy energy bandwidth study, glass fiber, reinfo↗