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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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At least 289 records · Page 16

All sources NASA NTRS DOE OSTI

NASA NTRSDate not supplied

Lunar Passive Fuel Cell Technologies: Evaporator + Fluid Polishing Elements

This project investigates key elements of a fully-passive, fuel-cell based, surface power generation concept. The overall concept replaces the actively pumped thermal management of a state of the art (SOA) fuel cell/electrolyzer stack with a passive 2-phase thermosyphon for heat transport and a passive shape memory actuating radiator for temperature management. The elements of the concept investigated in this project are: Evaporator Element: Evaluating the compatibility of common fuel-cell interconnect materials in the evaporator of a 2-phase water thermosyphon Fluid Polishing element: The use of membrane gas separation and resin water polishing to address non-condensable gas removal and water purity.

Fuel Cell↗

NASA NTRS1996

Electrostatic Dispersion and Evaporation fo Clusters of Drops of High-Energy Fuel for Soot Control

A model is presented for the electrostatic dispersion fo a polydisperse cluster of evaporating drops embedded into an inviscid vortex.

electrostatic dispersion evaporation evaporating d↗

NASA NTRS1962

THICKNESS DETERMINATION OF THIN FILMS BY THE EVAPORATION METHOD. TECHNICAL COMMENT

Thickness determination of thin films by the evaporation method

THIN FILM↗

NASA NTRS1962

ELECTRON GUN FOR EVAPORATION OF OXIDE FILM

Electron guns for evaporation of refractory oxide film

OXIDE FILM↗

NASA NTRS1962

A STUDY OF THE OUTGASSING AND EVAPORATION PRODUCTS OF SOME MATERIALS UPON EXPOSURE TO REDUCED PRESSURE

Differentiation of outgassing and evaporation products of materials on exposure to reduced pressures

EVAPORATION↗

NASA NTRS1963

EVAPORATION EFFECTS ON MATERIALS IN SPACE

Vacuum environmental effects on the evaporation, sublimation and decomposition rates of materials for space application

SPACE ENVIRONMENT↗

NASA NTRS1965

Solar absorptance and thermal emittance of evaporated metal films with and without sur- face coatings

Effects of evaporation rate and oxygen pressure on characteristics of silicon oxide films, and angular reflectance of metals determined by optical constants

EVAPORATION RATE↗

NASA NTRS1964

Degradation of polymeric compositions in vacuum to 10-9 mm hg in evaporation and sliding friction experiments

Degradation of polymer compositions in vacuum in evaporation and sliding friction experiments

SLIDING FRICTION↗

NASA NTRS1966

Computational methods for calculation of rates of evaporation in the Ta-Hf-C system

Computational methods for calculation of evaporation rates in tantalum-hafnium-carbon system

EVAPORATION RATE↗

NASA NTRS1965

MSC air evaporation water reclamation system Final report

Automatic air evaporation system for potable water recovery from urine

URINE↗

NASA NTRS1963

Finite rate evaporation of cryogenic hydrogen in two-phase air Technical report no. 367

Finite rate evaporation of cryogenic hydrogen in two-phase air

EVAPORATION RATE↗

NASA NTRS1966

Evaporative lifetimes of copper, chromium, beryllium, nickel, iron, and titanium on tungsten and oxygenated tungsten.

Coverage dependent evaporative lifetimes of various metals and oxygenated W ribbon filaments at high temperatures

EVAPORATION RATE↗

NASA NTRS1966

Evaporation rates of PbTe and Pb sub .5 Sn sub .5 Te pressed and sintered thermoelements.

Evaporation rates of lead telluride and lead tin telluride in pressed and sintered thermoelement form

TIN COMPOUND↗

NASA NTRS1967

Assessment of convection, conduction, and evaporation in nucleate boiling

NUCLEATE BOILING↗

NASA NTRS1967

An improved spatterproof vacuum evaporation source

Improved spatterproof vacuum evaporation source for use in depositing thin solid films on substrate

METAL FILM↗

NASA NTRS1967

Study of the process of heat and mass transfer during the evaporation of a liquid with a free surface in a rarefied gas medium

Heat and mass transfer during evaporation of liquid with free surface in rarefied gas medium

EVAPORATION↗

NASA NTRS1967

Flash evaporation and thin films of cuprous sulfide, selenide, and telluride.

Thin films of cuprous sulfide, selenide and telluride prepared by flash evaporation, discussing resistivity and absorption coefficient

COPPER COMPOUND↗

NASA NTRS2015

Thermal Control of a Venus Lander: Evaporation of Ammonia

Evaporation of ammonia at the temperature and pressure of the surface of Venus will allow electronics' baseplate temperatures to remain at 120 C for limited time determined by the amount of ammonia.

heat transfer↗