Energy

Access our comprehensive library of technical briefs on energy, from engineering experts at NASA and major government, university, and commercial laboratories.

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Briefs: Energy
Model-Based Prognostics for Batteries
The innovation provides enhanced health management routines for batteries. A mathematical model has been developed to describe battery behavior during individual discharge cycles, as well as over the cycle life. Different prognostic modes for estimating the state of charge, state of life, end of discharge,...
Briefs: Energy
High-Energy Lithium Flow Cells With Sulfur Cathodes for Transportation Applications
Since the entry of lithium-ion rechargeable batteries into the market, considerable improvements have been made in their gravimetric and volumetric energy densities, especially compared to aqueous systems such as Pb-acid, Ni-Cd, and Ni-MH. Sulfur cathodes have been...
Briefs: Energy
Pt-Ni and Pt-Co Catalyst Synthesis Route for Fuel Cell Applications
Oxygen reduction reactions (ORRs) at the cathode are the rate-limiting step in fuel cell performance. The ORR is 100 times slower than the corresponding hydrogen oxidation at the anode. Speeding up the reaction at the cathode will improve fuel cell efficiency.
Briefs: Energy
Future sustainable energy generation technologies such as photovoltaic and wind farms require advanced energy storage systems on a massive scale to make the...
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Briefs: Lighting
Today's light-emitting diode light bulbs have a slight environmental edge over compact fluorescent lamps, and that gap is expected to grow significantly as technology and...
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Briefs: Energy
An Integrated, Layered-Spinel Composite Cathode for Energy Storage Applications
At low operating temperatures, commercially available electrode materials for lithium-ion batteries do not fully meet the energy and power requirements for NASA’s exploration activities. The composite cathode under development is projected to provide the required...
Briefs: Electronics & Computers
Optimal Dynamic Sub-Threshold Technique for Extreme Low Power Consumption for VLSI
For miniaturization of electronics systems, power consumption plays a key role in the realm of constraints. Considering the very large scale integration (VLSI) design aspect, as transistor feature size is decreased to 50 nm and below, there is sizable increase in the...
Briefs: Materials
Imidazolium-Based Polymeric Materials as Alkaline Anion-Exchange Fuel Cell Membranes
Polymer electrolyte membranes that conduct hydroxide ions have potential use in fuel cells. A variety of polystyrenebased quaternary ammonium hydroxides have been reported as anion exchange fuel cell membranes. However, the hydrolytic stability and conductivity of...
Briefs: Materials
Nano Sponges for Drug Delivery and Medicinal Applications
This invention is a means of delivering a drug, or payload, to cells using non-covalent associations of the payload with nanoengineered scaffolds; specifically, functionalized single-walled carbon nanotubes (SWNTs) and their derivatives where the payload is effectively sequestered by the...
Briefs: Lighting
A cost-competitive solution for increasing the light extraction efficiency of organic light-emitting diodes (OLEDs) with efficient and stable color rendering index (CRI) for solid-state lighting (SSL) was...
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Briefs: Green Design & Manufacturing
With military colleagues, a trio of University at Buffalo engineers have shown that embedding charged quantum dots into photovoltaic cells can improve electrical output by enabling the cells...
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Briefs: Energy
Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle...
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Briefs: Energy
This ultracapacitor design is energy- and cost-efficient with measurably less environmental impact. Hybrid Power Management (HPM) is the integration of diverse, state-of-the-art power...
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Briefs: Materials
Polymerization Initiated at the Sidewalls of Carbon Nanotubes
A process has been developed for growing polymer chains via anionic, cationic, or radical polymerization from the side walls of functionalized carbon nanotubes, which will facilitate greater dispersion in polymer matrices, and will greatly enhance reinforcement ability in polymeric...
Briefs: Energy
The objective of this project was to develop and then demonstrate the efficacy of a cost-effective approach for a low-defect-density substrate on which aluminum indium gallium nitride (AlInGaN)...
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Briefs: Energy
The primary objective of this project was to develop and implement a method that compensates for the inefficiency of the green light-emitting diode (LED). The proposed engineering solution was to use RGBW combination...
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Briefs: Green Design & Manufacturing
An important aspect of wind power plant impact studies is to evaluate the short-circuit current (SCC) contribution of the plant into the...
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Briefs: Energy
Ultracapacitor-Based Uninterrupted Power Supply System
The ultracapacitor-based uninterrupted power supply (UPS) system enhances system reliability; reduces life-of-system, maintenance, and downtime costs; and greatly reduces environmental impact when compared to conventional UPS energy storage systems. This design provides power when required and...
Briefs: Energy
A design of a highly efficient and lightweight space magnetic cooler has been developed at Goddard Space Flight Center that can continuously provide remote/distributed cooling at temperatures in the range of 2 K with a heat sink at about 15 K. The innovative design uses a cryogenic circulator that enables the cooler to operate at a high cycle frequency to achieve a large cooling capacity.
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Briefs: Energy
Polymer nanofibers are nanoscale materials whose properties can be adjusted to provide desirable light management performance for high efficiency solid-state lighting...
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Briefs: Energy
Grid-Tied Photovoltaic Power System
A grid-tied photovoltaic (PV) power system is connected directly to the utility distribution grid. Facility power can be obtained from the utility system as normal. The PV system is synchronized with the utility system to provide power for the facility, and excess power is provided to the utility.
Briefs: Energy
CgWind is a new, high-fidelity simulation tool designed to meet the modeling requirements of advanced wind energy resources. These new resources, targeting 20% of the US...
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Briefs: Energy
An enhanced thin-film silicon photovoltaic device with improved efficiency has been developed. Thin-film silicon solar cells suffer from low material absorption characteristics,...
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Briefs: Energy
Heat load is reduced by more than half. An active thermal control system architecture has been modified to include a regenerative heat exchanger (regenerator) inboard of...
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Briefs: Energy
Multi-Mission Power Analysis Tool
Multi-Mission Power Analysis Tool (MMPAT) Version 2 simulates spacecraft power generation, use, and storage in order to support spacecraft design, mission planning, and spacecraft operations. It can simulate all major aspects of a spacecraft power subsystem. It is parametrically driven to reduce or eliminate the...

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