3 edition of Investigation of heat transfer in zirconium potassium percholate at low temperature found in the catalog.
Investigation of heat transfer in zirconium potassium percholate at low temperature
by University of Texas at Austin, Center for Energy Studies in Austin, TX
Written in English
|Other titles||Study of the failure mechanism of the NASA standard initiator.|
|Statement||submitted by Philip L. Varghese.|
|Series||NASA contractor report -- NASA CR-184774.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
Zirconium Machining & Forming Operations Zirconium Machining & Forming Operations INTRODUCTION Zirconium is a hard, shiny, grayish white metal. With its superior corrosion resistance capabilities, it has increasingly become the material of choice in the fabrication of . • Heat transfer,also referred to simply as heat, is the movement of thermal energy from one thing to another thing of different temperature. there are three diffrent ways the heat can transfer conduction, convection and radiation. (10% Sn, UNS C) 68 20 50 Platinum 68 42 20 73 Plutonium 68 20 Potassium 68 20 Red.
The U.S. Department of Energy's Office of Scientific and Technical Information. Specht, Paul Elliott, & Cooper, Marcia A. Thermal Diffusivity and Specific Heat Measurements of Titanium Potassium Perchlorate Titanium Subhydride Potassium Perchlorate Glass Glass SB Glass and C Muscovite Mica Using the Flash Technique. United States. doi/
Zirconium - Specific Heat Capacity. Specific heat of Zirconium is J/g K. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. under certain special conditions they relate the temperature change of a system to the amount of energy added by heat transfer. Zirconium does not absorb neutrons, making it an ideal material for use in nuclear power stations. More than 90% of zirconium is used in this way. Nuclear reactors can have more than , metres of zirconium alloy tubing. With niobium, zirconium is superconductive at low temperatures and is used to make superconducting magnets.
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Abstract. The objective of this work was to study the reasons for the failure of pyrotechnic initiators at very low temperatures (10 to K). A two-dimensional model of the NASA standard initiator was constructed to model heat transfer from the electrically heated stainless steel bridgewire to the zirconium potassium perchlorate explosive charge and the alumina charge : Philip L.
Varghese. Investigation of heat transfer in zirconium potassium perchlorate at low temperature: A study of the failure mechanism of the NASA standard initiator The objective of this work was to study the reasons for the failure of pyrotechnic initiators at very low temperatures (10 to K).
A two-dimensional model of the NASA standard initiator was constructed to model heat transfer from. Get this from a library. Investigation of heat transfer in zirconium potassium percholate at low temperature: a study of the failure mechanism of the NASA standard initiator: final technical report for the period August 1, Aug [Philip L Varghese; United States.
National Aeronautics and Space Administration.]. The objective of this work was to study the reasons for the failure of pyrotechnic initiators at very low temperatures (10 to K). A two-dimensional model. A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas/smoke or a combination of these, as a result of non-detonative self-sustaining exothermic chemical reactions.
Pyrotechnic substances do not rely on oxygen from external sources to sustain the reaction. Basic types of pyrotechnic compositions are. A pyrotechnic initiator (also initiator or igniter) is a device containing a pyrotechnic composition used primarily to ignite other, more difficult-to-ignite materials, e.g.
thermites, gas generators, and solid-fuel name is often used also for the compositions themselves. Pyrotechnic initiators are often controlled electrically (called electro-pyrotechnic initiators), e.g. using a. Varghese, P.L., El-Katerji, W.A.: Investigation of heat transfer in zirconium potassium perchlorate at low temperature: a study of the failure mechanism of the NASA standard initiator, Austin () Google Scholar.
Investigation of heat transfer in zirconium potassium perchlorate at low temperature: A study of the failure mechanism of the NASA standard initiator Article Feb The reaction mechanism and ignition characteristics of the pyrotechnic composite of titanium nanoparticles and micron sized potassium perchlorate was investigated under rapid heating conditions.
The optimum heat treatment is °C for 1 hr at temperature. Furnace parameters, such as heat up and cool down rates, for zirconium equipment and components will depend on the design and maximum thickness of the vessel to be heat treated. It is recommended that the temperature of the furnace not exceed °C prior to.
A zirconium perchlorate potassium propellant exhibits a low ignition temperature resulting in lower power needed for ignition. An alternative to silicon, the chambers can be made using Foturan glass ensuring good thermal insulation between the thrusters, enabling thermal decoupling .
DTA studies on a range of zirconium/potassium perchlo- rate compositions, with 2 % nitrocellulose (NC), were reported by Durgapal et al.W, who observed two closely overlapping exothermic peaks at ca. °C for composi- tions with 20 % and 30 % zirconium, which they attributed to the oxidation of zirconium by potassium perchlorate and.
Zirconium alloy (e.g. Zr + 1%Nb) is widely used as a cladding for nuclear reactor fuels. The desired properties of these alloys are a low neutron-capture cross-section and resistance to corrosion under normal service conditions.
Zirconium alloys have lower thermal conductivity (about 18 W/m.K) than pure zirconium metal (about 22 W/m.K). Growth: With the initial flame as a heat source, additional fuel ignites. Convection and radiation ignite more surfaces.
The size of the fire increases and the plume reaches the ceiling. Hot gases collecting at the ceiling transfer heat, allowing all fuels in a room to come closer to their ignition temperature.
Developing energetic composite materials consisting of fuel and oxidizer is an effective strategy to enhance the energy release property. However, this strategy has rarely been applied in Potassium Perchlorate (KClO4)-containing energetic materials, even though KClO4 is a much stronger oxidizer than most previously reported metal-oxide oxidizer.
One of the main obstacles is the lack of simple. Shripad T. Revankar, in Storage and Hybridization of Nuclear Energy, Steam Electrolysis (High-Temperature Electrolysis) High-temperature steam electrolysis (HTSE) operates typically at temperatures –°C and uses steam as feed material.
The total energy demand of electrolysis in the vapor phase for this electrolysis is reduced by the heat of vaporization, which can be. The combustion of zirconium potassium perchlorate (ZPP) in a closed vessel is modelled and validated through a numerical simulation.
Because the extremely high pressure oscillation occurs in less than a millisecond, an in‐house computational fluid dynamics (CFD) code is used to observe the detailed flow structures and determine the adequate burning characteristics, including the. Zirconium and potassium perchlorate were found to give an exothermic solid state reaction between °C and °C and the reaction was influenced significantly.
TITAN Zirconium Heat Exchangers are used in a wide variety of environments. To view a list of materials where Zirconium is commonly used, please visit Applications of Zirconium. For a general guide on corrosion resistance, temperatures and concentrations please see TITAN’s publication “ Corrosion Resistance of Metals in Various Chemical.
EINECS Potassium zirconium carbonate. Carbonic acid, potassium zirconium salt. Carbonic acid, potassium zirconium salt (1:?:?). Inspection Open Date SIC Establishment Name; 03/19/ Oea Inc: Employee #1 was loading a tray of uncapped parts containing zirconium potassium perchlorate (ZPP), a shock-sensitive explosive, into an autocapping machine.between the heat of explosion of ammonium picrate and that of an ammonium picrate-potassium per chlorate mixture, and also the difference between 65 tbr.
heat of explo ion of pot,t ium picrate and that of a poLas ium picrate-pota sium perchlorate mix .Many solid propellants have shown increased rates of reaction when formulated with carbon black. It is known that solid potassium perchlorate and carbon black react at comparatively low temperatures (i.e., to °C) at a rate much too fast for the normal dissociation of perchlorate into potassium chloride.