A globe valve with K = 4.0 has a flow velocity V = 2.0 m/s in the pipe. Compute head loss h_L.

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Multiple Choice

A globe valve with K = 4.0 has a flow velocity V = 2.0 m/s in the pipe. Compute head loss h_L.

Explanation:
Head loss through a valve is found from h_L = K V^2 / (2 g). The loss coefficient K = 4.0 tells how much energy is lost for the flow through the valve. With V = 2.0 m/s, V^2 = 4. Plug in: h_L = 4.0 × 4 / (2 × 9.81) = 16 / 19.62 ≈ 0.815 m. So the head loss is about 0.815 meters.

Head loss through a valve is found from h_L = K V^2 / (2 g). The loss coefficient K = 4.0 tells how much energy is lost for the flow through the valve. With V = 2.0 m/s, V^2 = 4. Plug in: h_L = 4.0 × 4 / (2 × 9.81) = 16 / 19.62 ≈ 0.815 m. So the head loss is about 0.815 meters.

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