05-04: Natural Frequency Characteristics of Drive ShaftsFor 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

the mitigation effectiveness increased significantly

This preparation is based on the knowledge of what the system contains

cooling ranges and approaches

This type of shaft replaces the maintenance nuisance of intermediate shaft bearings with potential thermal expansion problems

the largest single area of cost overrun is in supervision and labor costs

This paper discusses the impact of velocity consideration in the design of air-cooled condensers

If a cooling tower is built to achieve the design operating conditions that only occur 1% to 2% of the year

but also from the economic value of the lost chromate itself

energy can be conserved through the use of water

This paper will focus on research efforts

This list will periodically be updated as new contributions to the literature are made on this topic

Simultaneous with this concern about thermal pollution and the trend towards use of recirculatory systems incorporating evaporative cooling systems