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Abstract:
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Much is known about the effects of changing ambient relative humidity and
temperature, or ambient dew point, on air jet weaving. Dew point is the temperature
below which condensation of water vapor begins as the atmosphere or air is cooled.
The effect of changing the compressed air dew point on air jet weaving has not been
researched.
Three different compressed air dew point levels, 35 OF, 50 OF, and 65 OF, were
used for the research. A Sulzer Riiti L5200 air jet weaving machine and eight different
weft yams, 6/1, 12/1, and 18/1 100 percent cotton yams, 12/1, 18/1, and 35/1 50/50
polyester/cotton yams, and 150 denier textured and flat polyester filament yams, were
also utilized. The equipment and raw materials were used to determine the effect of
increasing the compressed air dew point on pick arrival time, pick arrival time
variability, air pressure settings, and air flow in air jet weaving.
The number of weft stops were recorded for each yam count/blend and filament
yam at the 35 0, 50°, and 65 ° dew points to determine if higher dew points affected the
number of weft stops in air jet weaving.
The results show that the compressed air dew point does not affect the
performance measurements used in this research. The results do indicate, however,
savings in energy costs can be realized from using a higher compressed air dew poiilt.
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