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Water at 40 C (density = 992.3 kg/m3 v = 0.664 10 6 m 2 /s) flows at a velocity of 2 m/s through a

Water at 40 C (density = 992.3 kg/m3 v = 0.664 106 m2/s) flows at a velocity of 2 m/s through a pipe with a diameter of 20 mm and a friction factor of f = 0.004. The water enters the pipe at point A (Figure Q2) into a bath shower mixer unit out of which, the water can exit through the spout via a gate valve (Figure Q2a) or through the showerhead (Figure Q2b).

a. If the water exits through the spout (Figure Q2a) via a fully opened gate valve at B, with a diameter of 12 mm, determine the water pressure at point A. The minor loss coefficient is Kspout = 0.6 for the spout at B. Account for the minor loss in the elbow, the tee, and the gate valve. The gate valve at E is closed.

b. If the water emerges through the showerhead (Figure Q2b, point C) that consists of 100 identical holes, each with a diameter of 1.5 mm. Determine the pressure of the water at A if the minor loss coefficient is Kshowerhead = 0.45 for the showerhead. The gate valve at B is closed. Account for the minor loss in the three elbows, the fully opened gate valve at E, and the tee.

M1 = 1.110m

M2 = 2.110m

M3 = 0.905m

Table of Loss Coeffcients

Loss Coeffcients KL
Gate Valve - Fully Open 0.19
90 Bend 0.9
45 Bend 0.4
Tee for Valve along Branch 1.8image text in transcribed
Figure Q2. Bath shower mixer unit with water entering the system at point A and exiting through (a) spout located at point B and (b) shower head located at point C

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