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In: Mechanical Engineering

In large buildings, hot water in a water tank is circulated through a loop so that...

In large buildings, hot water in a water tank is circulated through a loop so that the user doesn’t have to wait for all the water in long piping to drain before hot water starts coming out. A certain recirculating loop involves 300-foot-long, 1-inch--diameter PEX pipes with six 90° threaded smooth bends and two fully open gate valves. The PEX piping is considered to be smooth (roughness is 0). If the average flow velocity through the loop is 5 ft/s, determine the pump power needed to overcome the loss in watts to three significant figures. Take the average water temperature to be 180 F (values for water in the text appendix).

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samet mamat answered 2 years ago
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