Preliminary study of gaseous nitrogen-liquid oxygen mixing and self-cleaning

Preliminary study of gaseous nitrogen-liquid oxygen mixing and self-cleaning by Allan J. Zuckerwar Download PDF EPUB FB2

The penetration of gaseous nitrogen into liquid oxygen at a pressure of psi was determined by monitoring the composition of the evaporating liquid in a nitrogen analyzer. For pressurization times of about 1 hr the penetration depth varies between and in.

at an evaporation rate of about 1 gal/day. These are small compared to the penetration depth of in. Get this from a library. Preliminary study of gaseous nitrogen-liquid oxygen mixing and self-cleaning.

[Allan J Zuckerwar; Langley Research Center.]   PRELIMINARY STUDY OF GASEOUS NITROGEN-LIQUID OXYGEN MIXING AND SELF-CLEANING ALLAN J, ZUCKERWAR DECEMBER (NASA-TM) PBELIHINABY STUDY OF N GASEOUS NITBOGEK-IIQUID OXYGEN HIXING AND SELF CLEANING (NASA) 12 p HC A02/WF A01 CSCL 20fl Unclas G3/77 NASA National Aeronautics and Space Administration Preliminary study of gaseous nitrogen-liquid oxygen mixing and self cleaning.

By A. Zuckerwar. Abstract. The penetration of gaseous nitrogen into liquid oxygen at a pressure of psi was determined by monitoring the composition of the evaporating liquid in a nitrogen analyzer. For pressurization times of about 1 hr the penetration depth   SUPPORT OF THE EIGHT-FOOT HIGH TEMPERATURE TUNNEL WIIFICATION PROJECT BY Kim Chi Ngol and Roland R.

Mielke2 LIQUID OXYGEN-LIQUID NITROGEN MIXING AND SELF-CLEANING STUDY INTRODUCTION In the past several years, there has been a resurgent interest in hy- :// Estimation of Condensation Effects on Freestream Conditions in Vitiated Air Wind Tunnels Preliminary study of gaseous nitrogen-liquid oxygen mixing and self cleaning The penetration of Oxygen may be obtained from the atmosphere by the liquefaction and fractional distillation of air.

Liquid air is a mixture of liquid nitrogen, boiling point C, and liquid oxygen, boiling point C. The nitrogen is more volatile (i.e. it has a lower boiling point) and boils off first during :// A commercially available TiO 2 containing paint (PC-S7) was used to apply coatings on the surface of the (self-compacting architectural mortar (SCAM).

It was an aqueous dispersion (sol) of ultrafine anatase particles (specific surface area = m 2 /g). The TiO 2 content in the paint was about 10% (by weight) according to the information provided by the ://   ADVERTISEMENTS: Read this article to learn about types, sources, effects and methods of solid waste management.

Solid waste management is a polite term for garbage management. As long as liumans have been living in settled communities, solid waste, or garbage, has been an issue, and modern societies generate far more solid waste than early humans [ ] Self-cleaning TiO 2 coatings with low surface reflection/antireflection property and high light transmission ability is beneficial for their applications such as in flat panel displays, solar energy collectors, and greenhouses,.

Additionally, for practical applications, it is desirable that the hydrophilic character of self @article{osti_, title = {Self-regenerating system of removing oxygen and water impurities from hydrogen gas}, author = {Simons, H M}, abstractNote = {Oxygen and water impurities are cleaned from hydrogen, which is to be stored in tanks containing a hydride-forming metallic alloy, using a novel, self-cleaning filter system.

The impurity-containing hydrogen gas is first passed through a At temperatures equal to or less than °C, the total number of oxygen molecules chemisorbed approached a roughly constant fraction () of the number of krypton atoms in the B.E.T.

monolayer, and no oxides of carbon were liberated. Gaseous carbon dioxide was produced very slowly at °:// Request PDF | On Sep 1,Monika J. Fabiańska and others published Gaseous compounds and efflorescences generated in self-heating coal-waste dumps — A case study from the Upper and Lower The basis of the European Waste Legislation is the Framework Directive on Waste that is set out in the Directive on Waste 75/, xxxx, Directive 91/, xxxx, Directive on Hazardous Waste 91/, Waste Framework includes two categories of directives: those setting requirements for the permission and operation of waste disposal facilities, and those dealing with disposal options for   Burning velocities and flammability limits of gaseous mixtures of combustible gas (hydrogen and methane), oxidizer (oxygen and air), and diluent (nitrogen, argon, helium, carbon dioxide, steam, water aerosol formed by evaporation of superheated water) have been measured at elevated temperatures (up to C) and pressures (up to MPa).

In addition, it promotes the fast exchange of O 2 and CO 2 between culture and gaseous stream. On the other hand, tubular PBRs are designed for outdoor cultures, having a large illumination surface. They present high CO 2 uptake efficiency, as it increases the contact time between gaseous and liquid phases (Stewart and Hessami, ).

Self-cleaning Properties of Zirconium Dioxide Thin Films Article (PDF Available) in Journal of Photochemistry and Photobiology A: Chemistry September with While oxygen is injected in a dense, liquid state, several researchers ha ve pointed out that combustion occurs among ideal gases.

9, 34, 45 However, it was been sugges41 that not only In this study, average wastewater solids concentrations and removal rates, and site specific daily average influent flow are used to estimate site specific annual sludge production on a dry weight This paper presents an attempt to use the hybrid rocket for marine applications with a N class hybrid motor.

A 5-port high density polyethylene (HDPE) fuel grain was used as a test-bed for the preliminary assessment of the underwater boosting device. A rupture disc preset to burst at a given pressure was attached to the nozzle exit to prevent water intrusion where a careful hot-firing.

@article{osti_, title = {Modeling the release and dispersion of hazardous materials with complex behavior}, author = {Rodean, H.

C.}, abstractNote = {A mathematical model for the release and dispersion of hazardous materials in the atmosphere necessarily includes a submodel for the materials. Two toxic materials with complex behavior, uranium hexafluoride (UF/sub 6/) and nitrogen   Note that the kilogram, not the gram, is a base unit.

The close relationship to water is that one m 3 of water weighs (approximately) kg. A base unit that can be difficult to understand is the mole.A mole represents *10 23 particles of any substance. (The number is known as Avogadro's Number, or the Avogadro constant.)This usually means the number of atoms or molecules of an “Isolated Liquid Oxygen Drop Behavior in Fluid Hydrogen at Rocket Chamber Pressures”, (K.

Harstad and J. Bellan), Int. J Heat and Mass Transfer, 41,“Interactions of Liquid Oxygen Drops in Fluid Hydrogen at Rocket Chamber Pressures”, (K. Harstad and J. Bellan), Int. J Heat and Mass Transfer, 41,