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Effects of Temperature Changes on Emitter Discharge
Journal of Irrigation and Drainage Engineering, 1999Working on the assumption that temperature affects water viscosity and emitter geometry, the writers have developed a dimensional analysis approach to the potential pressure-discharge relationship to estimate discharge sensitivity to temperature. Its accuracy was validated by experimental data.
Leonor Rodríguez-Sinobas +2 more
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Emitter Discharge Sensitivity to Pressure and Temperature
Journal of the Irrigation and Drainage Division, 1981The discharge sensitivities to pressure and temperature of three types of emitters (helical long-path, labyrinth and vortex-type emitters) were determined in the laboratory. The measured discharge sensitivity to pressure was used to calculate the maximal permissible pressure variation in a field for the various emitters.
Benjamin Zur, S. Tal
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The Role of Cathode Temperature in the Glow Discharge
Journal of Applied Physics, 1950Experiments were conducted to study the role of the temperature of oxide-coated cathodes in the glow discharge of argon, neon, and mixtures of neon and argon, and mercury vapor and argon. It was found that for tubes without mercury present, in the region of cathode temperature between 300°K and 750°K: (1) The sparking potential falls ...
Harold Jacobs, Jack Martin
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Prediction of Temperature Due to Heated Discharges
Journal of the Power Division, 1978A phenomenological model has been developed for the prediction of subsurface temperature from a given set of surface isotherms due to heated effluent discharge from a thermal-electric power plant. When surface isotherms are obtained from infrared overflight measurements the model can provide estimates of subsurface isotherms.
Joseph C. Cataldo +2 more
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Temperature effects in glow-discharge tubes
Proceedings of the Institution of Electrical Engineers, 1969Glow-discharge reference tubes with various cathode materials, but identical gas filling and pressure, operating in the normal-glow mode, show different temperature coefficients when operated under similar conditions. Measured temperature coefficients are compared with calculated values obtained from a knowledge of the running-voltage/current ...
F.A. Benson, D.J. Mellor
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Transient equations of a two-temperature discharge
Journal of Applied Physics, 1980Transport equations for mass, momentum, energy, and heat flux based on the thirteen-momentum approximation of the Boltzmann equation are analyzed in the isobaric approximation. The left-hand-side terms are estimated and compared with terms representing the collisional transfer for the transient case of nonequilibrium two-temperature discharges in ...
Jaroslav P. Novak, Magdi M. Shoucri
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Spectroscopic temperature measurements in oxygen discharges
Journal of Physics D: Applied Physics, 1991The rotational temperature of the excited state O2 (b1 Sigma g+, v=0) in an oxygen glow discharge is measured from the intensity distribution of the atmospheric A-band O2 (b1 Sigma g+, v=0) to O2(X3 Sigma g-, v=0) at lambda =760 nm. The kinetic temperature, often called the gas temperature is also deduced using vacuum ultraviolet absorption ...
M Touzeau +5 more
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Rotational temperature measurements in hydrogen discharges
Vacuum, 1996Abstract An electrodeless capacitive rf discharge operated at 13.56 MHz, which we used previously in diamond deposition experiments, was placed in a specially constructed furnace in order to control the temperature independently of rf power. Methane highly diluted in hydrogen as well as pure hydrogen were used as process gases. The emitted light from
J Laimer +3 more
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Effect of temperature and humidity on ballistospore discharge
Transactions of the British Mycological Society, 1964Observations are reported on the effect of temperature on basidiospore discharge in Schizophyllum commune Fr. and Polyporus brumalis (Pers.) Fr. In both, the optimum tends to be below that for vegetative growth. Further, above the optimum, spore discharge is stopped by temperatures which still permit vigorous and sustained vegetative growth ...
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Effect of temperature on surface discharge in oil
2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2012In this paper surface discharge along the oil-pressboard interface was investigated. Surface discharges were measured both in time domain by means of an oscilloscope and as phase resolve patterns. The effect of temperature from 20 °C to 90 °C on surface discharge inception, extinction and surface flashover voltage were investigated. Trend of number and
M. Ghaffarian Niasar +4 more
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