Figure 17. Variable speed motor controller with digital human interface
Piping system
The piping system consists of fifteen 200-mm- and five 150-mm-diam
pipelines, with a total pipe length of approximately 1,500 m. Selection of the
discharge pipe diameter was based primarily on economics. The cost of various
pipe sizes was compared with the associated pump and motor size required to
overcome the resulting head loss through the piping system at maximum
discharge. All of the pipe, fittings, and valves are constructed of rigid polyvinyl
chloride. The advantages of polyvinyl chloride are that it has good pressure-
bearing capability, exceptional long-term corrosion resistance, and smooth
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Chapter 3
Longshore Current Recirculation System
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