Question

A reciprocating pump running at 50 r.p.m. is discharged oil (specific gravity = 0.9). The pump has stork length of 450 mm The diameter of piston is 220 mm. The delivery and suction heads are 25 m and 7 m respectively. Calculate the power required. Density of water =1000 Kg/m3 Select one: a. 4.222 kw b. 4.962 KW O c. 5.021KW O d. 4.121KW O e. 4.026 KW

Answer 1

Given, RPM = 50 (N) 450 mm Specific gravity of oil - 0.9 Stroke hength (2) Diametre og piston = 220mm Delivery Head (Ho) = 25m Suction Head (Hj) = 7m Density of water = 1000 kgIm3 density of oil wates density (C) - (0.9) x (1000) density of Oil (e)- 900 kg/m3 Power sequived (P)Pg LAN CHs+HD) W 6. Ard? - (220x103) = 0.038 m2 A= 0.038 m2 Specific gravity of oil density of 60 P= PLANCH3t Ho) 60 (900)*(9.8) x (450x103) x(0-038) y 50x (25+7) 60 PE 4021.9 W P~4.022 kW