Results 121 to 130 of about 446 (163)
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Oxyhydrogen burner for low-temperature flame fusion
Review of Scientific Instruments, 1993An oxyhydrogen burner as described in this article enables the growth of crystals by Verneuil’s technique at temperatures of about 1000 °C. The powder fed to the crystal passes along a low-temperature pathway through the flame, so that evaporation of volatile components is prevented.
M. Ueltzen +3 more
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Heterogeneous chain propagation in a rarefied oxyhydrogen flame
Doklady Physical Chemistry, 2004In the 1950s and 1960s, Semenov’s theory of branched chain processes had become capable of quantitatively describing hydrogen combustion [1, 2], but the theory fit the experimental data only in the depth of the ignition peninsula. As reported in [3], Semenov and colleagues observed [1] a hydrogen combustion rate exceeding the theoretical expectations ...
E. N. Aleksandrov, S. N. Kozlov
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Slowdown of oxyhydrogen detonation by surface catalysis
Symposium (International) on Combustion, 1977The propagation velocities of stoichiometric oxyhydrogen detonations were measured in thin tubes of different wall materials. From 4 to 6% velocity differences were observed consistently for pyrex and γ-alumina walls. By changing the tube geometries, it was confirmed that this velocity difference can be explained only by the catalysis of the wall ...
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Modeling and validation of a comercial dry electrolytic cell for the production of oxyhydrogen
2020 Advances in Science and Engineering Technology International Conferences (ASET), 2020This article presents the dynamic model of a commercial dry electrolytic cell that produces oxyhydrogen with a maximum capacity of 2.25 L / min. The equations were raised taking into account the laws of fundamental thermodynamics, empirical current-voltage relations.
Rincón Castrillo, Erick Daniel +5 more
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Journal of Advanced Research in Experimental Fluid Mechanics and Heat Transfer
Diesel engines are frequently used because of their high efficiency and durability. However, they are also known for emitting high amounts of pollutants, including CO2, CO, NOx and particulate matter. Current studies have focused on alternate fuel techniques to reduce these emissions. An effective method involves using oxyhydrogen (HHO) with diesel and
Waqad Ul Mulk +3 more
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Diesel engines are frequently used because of their high efficiency and durability. However, they are also known for emitting high amounts of pollutants, including CO2, CO, NOx and particulate matter. Current studies have focused on alternate fuel techniques to reduce these emissions. An effective method involves using oxyhydrogen (HHO) with diesel and
Waqad Ul Mulk +3 more
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Numerical analysis of 1st and 2nd cycles of oxyhydrogen PDE
40th AIAA Aerospace Sciences Meeting & Exhibit, 2002One-dimensional analyses of pulse detonation engine (PDE) have been performed by numerous workers without considering injection phase. 1-D codes have fundamental defects in considering transport processes (viscosity, heat conductivity and diffusion) and injection phase. In studying PDE, a key issue would be how to generate a CJ/quasi-CJ detonation in a
S. Kawai, T. Fujiwara
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The influence of the electrolyte parameters on the efficiency of the oxyhydrogen (HHO) generator
2014 18th International Symposium on Electrical Apparatus and Technologies (SIELA), 2014The electrolysis of water is an electrochemical process wherein hydrogen and oxygen are derived. The resulting mixture of oxygen and hydrogen is called oxyhydrogen or Brown's gas. This paper present an experimental study of the regime of operation of an oxyhydrogen (HHO) generator depending on the parameters of the electrolyte - concentration and ...
Maik Streblau +3 more
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Oxyhydrogen combustion and detonation driven shock tube
Acta Mechanica Sinica, 1999The performance of combustion driver ignited by multi-spark plugs distributed along axial direction has been analysed and tested. An improved ignition method with three circumferential equidistributed ignitors at main diaphragm has been presented, by which the produced incident shock waves have higher repeatability, and better steadiness in the ...
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II. On the absorption-spectra of metals volatilized by the oxyhydrogen flame
Proceedings of the Royal Society of London, 1875Abstract The researches which have recently been published on the absorption-spectra of various metals, first by Roscoe and Schuster and subsequently by one of us, establish beyond all question the facts that— I. In addition to the well-known line-spectra, channelled-space spectra are produced by the vapours of certain metals; and, II.
Joseph Norman Lockyer +1 more
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INVESTIGATING THE EFFECT OF OXYHYDROGEN ON THE PERFORMANCE OF A COMPRESSION IGNITION ENGINE
The International Conference on Applied Mechanics and Mechanical Engineering, 2014ABSTRACTEvaluating the performance enhancement of a diesel engine through the addition ofOxy-hydrogen (HHO) gas generated through water electrolysis has beeninvestigated by several researchers. The outcomes were claimed to be verypromising. It is thought however that the results need more investigation.
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