Thesis Details


Thesis Title: The impact of altering the compressed air dew point on air jet weaving
Thesis Author: J. Ryan Kilbreth
Abstract: 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.