Question

2. 10.00 points A pump delivers gasoline at 20°C and 13.8 mm. Al the iniet, P, = 100 kPa, 24 = 1 m, and VA = 2 ms. At the exit p2 = 500 kPa, 22 = 4 m, and V? = 3 ms. How much power is required if the motor efficiency is 75%? Round the final answer to the nearest whole number. For gasoline, take pg 6809.81) - 6871 Nim? w Hints References Book & Resources Hint 1 Check my work

Answer 1

Q = 13.8 mitha 13.8 mis 3600 At inlet! P. = 100kpa; V=2mls; Zi=1m At exet P2 = 500 kpa, Vy=3 m, Z2 = 4 m n = 75.1.20.75 Y = 6671 N/m3 = 6.671 Kelm3 Applying bemelile's equation between Inlet and outlet by neglecting all the losses. 2 & Zz + + 2 + hp = by the hp = left 小可 2 + Z₂ - Zi 2g +4-1 Head of the presup, hp- 500 to + 1 1750 Rp = 59.961 +0.255 +3 (hp = 63. 216) m power requered, P- Yo he 6671X (1358 x 63.216 3600 0.75 IP=2155.427 /Watt 1 P=2155 W