A closed tank contains liquified butane gas whose specific gravity is 0.60. The tank pressure is 1.7 Mpa gage which is also the equilibrium vapor pressure of butane at the pumping temperature. Suction lines losses is 1.5m of gas and the static elevation gain is 4m. What is the NET POSITIVE SUCTION HEAD AVAILABLE?(NPSHa)

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Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?