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Tests using mixed-oxidant solution instead of oxidizing biocides (chlorine or bromine) for cooling tower maintenance
particularly the fire-retardant grades
Vibrations levels in the region of the natural frequency are empirically determined for composite drive shafts and multiple test methods for determining the natural frequency are described and compared
” Such considerations include building codes
These alternate tube designs were analyzed under a variety of flow conditions in controlled settings
05-04: Natural Frequency Characteristics of Drive Shafts Fills Tests using mixed-oxidant solution insteadFor rotating machinery utilizing drive shafts, it is important to operate at a speed sufficiently lower than the drive shaft's natural frequency to prevent destructive vibration. In this paper, the theory of determining the shaft's natural frequency is presented as well as methods for empirically testing a shaft's natural frequency. Vibrations levels in the region of the natural frequency are empirically determined for composite drive shafts and
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