Results 241 to 250 of about 819,489 (301)

Air Velocities Delivered by Orchard Air Sprayers

Transactions of the ASAE, 1979
ABSTRACT REGRESSION equations were developed to show the effect of travel speeds and of horizontal and vertical distances from the outlet on the air velocity delivered by three types of orchard air sprayers. The regression equa-tions show the rate that air velocities produced by orchard air sprayers decrease as travel speed increases and how rapidly ...
null D. L. Reichard, null R. D. Fox, null R. D. Brazee, null F. R. Hall   +3 more
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Constant velocity air inlet controller

Computers and Electronics in Agriculture, 1991
Abstract The experimental implementation of a microprocessor-based controller to adjust the width of hinged baffled slot inlets is described. The system was designed to utilize a velocity sensor which output a digital pulse train proportional to the air velocity as the feedback mechanism to the controller.
R.S. Gates, D.G. Overhults, B.L. Walcott, S.A. Shearer   +3 more
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The air velocity problem [air conditioning]

Proceedings of Intelec 93: 15th International Telecommunications Energy Conference, 2005
In recent decades, the heat generated by electronic components has constantly been increasing. For equipment cooled by air, it has therefore been necessary to successively increase air velocity. This tendency is associated with many problems at the premises, cabinet and circuit board levels.
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Air Velocity Distributions from Air-assisted Five-port Sprayer

2012 Dallas, Texas, July 29 - August 1, 2012, 2012
Capability to control both liquid and air flow rates based on tree structures would be one of the advantages of future variable-rate orchard and nursery sprayers. Air jet velocity distributions from an air assisted, five-port sprayer which was under the development to achieve variable-rate functions were measured at various heights above the ground and
null Jiabing Gu, null Heping Zhu, null Weimin Ding   +2 more
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Pulsating Air Velocity Measurement

Journal of Fluids Engineering, 1939
Abstract This paper includes an analysis of the weaknesses of three methods of air velocity measurement, that is, (1) the hot-wire anemometer, (2) the Thomas or Callandar meter, and (3) nozzles, orifices, or pitot tubes used with liquid manometers, and the author points out that these methods give unreliable results when the air flow is ...
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Burning velocity of methane-air flames

Combustion and Flame, 1969
Abstract Burning velocity measurements using stationary flames have been refined to give results with a mean error as low as ± 1 per cent. The method employs nozzle burners and a single pass schlieren system. Precautions have been taken to minimize errors at each stage of the experiments and calculations. The influence of burner design and the use of
I. Fells, A.G. Rutherford
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Equipment for measuring low air velocity

Agricultural Meteorology, 1973
Abstract This publication comprises detailed information for the construction of an inexpensive low velocity thermo-anemometer as well as experience gained from its application. It includes a description of necessary instruments involved and some important requirements related to them. The method of calibration is described.
P. Roer, M. Kjölsvik
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Velocity of Sound in Air

The Journal of the Acoustical Society of America, 1939
Determinations by capable investigators of the velocity of sound in dry air at 0°C range from 330.6 to 331.9 m/sec. Miller's value (331.36±0.08) m/sec. is probably the best for low frequency (explosive) sounds. Part of this range of values may be due to dispersion. The CO2 and the O2 contents of air are sensitive to water vapor in this respect.
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Electron drift velocity determination in air

IEEE Conference Record - Abstracts. 1997 IEEE International Conference on Plasma Science, 1997
Summary form only given. We have determined the electron drift velocity /spl upsi//sub dr/ from the location of the turning points of the diffusion-drift branch of RF breakdown curves. As is known at these points the electron displacement amplitude in the RF field A=eE/(m/spl upsi//sub en//spl omega/) (v/sub en/ is the effective electron-neutral ...
V.A. Lisovskiy, V.D. Yegorenkov
openaire   +1 more source