5. (a) A pump moves 0.4 ft/s of light oil through a 2-in. ID, cast-iron line 500...

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5.

(a) A pump moves 0.4 ft³/s of light oil through a 2-in. ID, cast-iron line 500 ft long, as shown in Fig. P1-5. Determine the pumping power required.

(b) What power would be required if the oil were heated such that μ = 1.6 × 10-3 lbm/ft-s?

H P

ID = 2 in.

p = 56.1 lbm/ft³

μ = 5.76 Χ 10-3 lbm/ft-s H = 15 ft FIGURE P1-5

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