27. The Hazen Williams equation can be used to calculate the pressure drop, Pd (psi/ft of pipe)...
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27. The Hazen Williams equation can be used to calculate the pressure drop, Pd
(psi/ft of pipe) in pipes due to friction:
where Q is the flow rate (gpm), C is a design coefficient determined by the type of pipe, and d is pipe diameter in inches. Consider a 3.5-in.-diameter steel pipe with . Calculate the pressure drop in a 1000-ft-long pipe for flow rates of 250, 300, 350, 400, and 450 gpm. To carry out the calculation, first create a five-element vector with the values of the flow rates (250, 300, ...). Then use the vector in the formula using element-by-element operations.
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