An oil pump is drawing 44kW of electric power while pumping oil with p = 860...
An oil pump is drawing 44kW of electric power while pumping oil with p = 860 kg/m^3 at a rate of 0.1 m^3/s. The inlet and outlet diameters of the pipe are 8cm and 12cm, respectively. If the pressure rise of oil in the pump is measured to be 500 kPa and the motor efficiency is 90 percent, determine the mechanical efficiency of the pump.
Homework Answers
Add Answer to:
An oil pump is drawing 44kW of electric power while pumping oil
with p = 860...
Question 18 (10 April 2020) 51.5 kW 12 cm Pump An oil pump is drawing 51.5...
Question 18 (10 April 2020) 51.5 kW 12 cm Pump An oil pump is drawing 51.5 kW of electric power while pumping oil with p= 860 kg/m3 at a rate of 0.23 m3/s. The inlet and outlet diameters of the piper are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 500 kPa and the motor efficiency is 87.5 percent, determine the mechanical efficiency of the pump. Motor 8 cm...
A centrifugal pump is pumping water at a rate of 35.55 gal/min. The pressures at the...
A centrifugal pump is pumping water at a rate of 35.55 gal/min. The pressures at the inlet, and outlet of the pumps are -2.26 psig and 7.715 psig respectively. The outlet pipe is placed 10 inches higher than the inlet pipe. The inlet and outlet diameters of the pipe are 1.85 in and 1.6 in respectively and the torque produced by the pump rotating at 1593 rpm is 3.172 ft.Ibf. Calculate the following in SI units: a) Total head b)...
A pump is pumping water at a flow rate of 1200 litres per minute. In the...
A pump is pumping water at a flow rate of 1200 litres per minute. In the pump the mechanical energy of the water increases by 250 J/kg. The density of water is 1000 kg/m3. a) Determine the pressure difference between the pump outlet and the pump inlet. Assumptions: there are no frictional losses in the pump, and differences in velocity and elevation between inlet and outlet of the pump can be neglected. b) Show that the mechanical power added to...
(5 pts) A pump is pumping water from a lake to the top of a mountain...
(5 pts) A pump is pumping water from a lake to the top of a mountain through a constant- diameter pipe. Water exits the pipe at a volumetric flow rate of 0.04 m/s. The vertical distance between the lake surface and the pipe exit at the top of the mountain is 100 m. The diameter of the pipe is 10 cm. All mechanical energy losses are negligible and the flow is steady and incompressible. (Water density-I g/cm, ?-I.) Determine a)...
lunzontal pipe and pump system in the following figure discharges 0.01583 m3/s. The gage pressure iust...
lunzontal pipe and pump system in the following figure discharges 0.01583 m3/s. The gage pressure iust before the pressure is 400 The m/s2 losses between 20°C water at 57 m3/h 0 kPa and just after the pump the gage a. The pump inlet diameter is 9 cm and the outlet diameter is 3 em. Let g-9.81 pump is 12 o Pwater9 kg/m, Hwate0.001002 kgm-s) and Pat the two pressure points and the pump. But consider frictional losses at the 9-cm...
A water pump delivers 6 hp of shaft power when operating. The pressure differential between the...
A water pump delivers 6 hp of shaft power when operating. The pressure differential between the outlet and the inlet of the pump is measured to be 1.2 psi when the flow rate is 15 ft3/s, and the velocity doubles from 3 ft/s as the water passes through the pump. Determine the mechanical efficiency of this Dumn
A pump moving hexane is illustrated in Figure P2.42. The flow rate is 0.02 m3 /s;...
A pump moving hexane is illustrated in Figure P2.42. The flow
rate is 0.02 m3 /s; inlet and outlet gage pressure readings are–4
kPa and 190 kPa, respectively. Determine the required power input
to the fluid as it flows through the pump.
7.5 cm P2 P1 1.5 m motor pump 1.0 m 10 cm FIGURE P2.42
(5) Oil is being pumped from a refinery to a distribution center. The pipe has a...
(5) Oil is being pumped from a refinery to a distribution center. The pipe has a length L 1000 m, diameter D-30 cm, and friction factor f-0.015. The change in elevation between the refinery and distribution center is H-10 m up. The pump power required to pump Q-o2 m3/s is P-70 kW. Calculate the pump efficiency and the power required to pump 2Q (i.e. 0.4 m'/s). Ignore local losses including the inlet and outlet velocity head and assume that the...
A water pump delivers 6 hp of shaft power when operating. The pressure differential between the...
A water pump delivers 6 hp of shaft power when operating. The pressure differential between the outlet and the inlet of the pump is measured to be 1.2 psi when the flow rate is 10 ft3/s, and the velocity changes to 5 ft/s from 2 ft/s as the water passes through the pump. Determine the mechanical efficiency of this pump assuming the water density to be 62.4 lbm/ft3 (written in decimal form with 3 significant figures).
i cannot understand (E2.2.2) (3/12)^2... Example 2.2 Pumping n Pentane 65 Example 2.2-Pumping nPentane Vent Storage...
i cannot understand (E2.2.2) (3/12)^2...
Example 2.2 Pumping n Pentane 65 Example 2.2-Pumping nPentane Vent Storage tank 40 ft Flow Vent Supply tank 4.5 ft Punp n? Fig. E2.2 Pumping n-pentane. Fig. E2.2 shows an arrangement for pumping n-pentane ( 39.3 lbin/fts) at 25 C from one tank to another, through a vertical distance of 40 ft. All piping is 3-in. I.D. Assume that the overall frictional losses in the pipes are given (by methods to be described in Chapter...
Question 18 (10 April 2020) 51.5 kW 12 cm Pump An oil pump is drawing 51.5 kW of electric power while pumping oil with p= 860 kg/m3 at a rate of 0.23 m3/s. The inlet and outlet diameters of the piper are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 500 kPa and the motor efficiency is 87.5 percent, determine the mechanical efficiency of the pump. Motor 8 cm...
A centrifugal pump is pumping water at a rate of 35.55 gal/min. The pressures at the inlet, and outlet of the pumps are -2.26 psig and 7.715 psig respectively. The outlet pipe is placed 10 inches higher than the inlet pipe. The inlet and outlet diameters of the pipe are 1.85 in and 1.6 in respectively and the torque produced by the pump rotating at 1593 rpm is 3.172 ft.Ibf. Calculate the following in SI units: a) Total head b)...
(5 pts) A pump is pumping water from a lake to the top of a mountain through a constant- diameter pipe. Water exits the pipe at a volumetric flow rate of 0.04 m/s. The vertical distance between the lake surface and the pipe exit at the top of the mountain is 100 m. The diameter of the pipe is 10 cm. All mechanical energy losses are negligible and the flow is steady and incompressible. (Water density-I g/cm, ?-I.) Determine a)...
lunzontal pipe and pump system in the following figure discharges 0.01583 m3/s. The gage pressure iust before the pressure is 400 The m/s2 losses between 20°C water at 57 m3/h 0 kPa and just after the pump the gage a. The pump inlet diameter is 9 cm and the outlet diameter is 3 em. Let g-9.81 pump is 12 o Pwater9 kg/m, Hwate0.001002 kgm-s) and Pat the two pressure points and the pump. But consider frictional losses at the 9-cm...
A water pump delivers 6 hp of shaft power when operating. The pressure differential between the outlet and the inlet of the pump is measured to be 1.2 psi when the flow rate is 15 ft3/s, and the velocity doubles from 3 ft/s as the water passes through the pump. Determine the mechanical efficiency of this Dumn
A pump moving hexane is illustrated in Figure P2.42. The flow
rate is 0.02 m3 /s; inlet and outlet gage pressure readings are–4
kPa and 190 kPa, respectively. Determine the required power input
to the fluid as it flows through the pump.
7.5 cm P2 P1 1.5 m motor pump 1.0 m 10 cm FIGURE P2.42
(5) Oil is being pumped from a refinery to a distribution center. The pipe has a length L 1000 m, diameter D-30 cm, and friction factor f-0.015. The change in elevation between the refinery and distribution center is H-10 m up. The pump power required to pump Q-o2 m3/s is P-70 kW. Calculate the pump efficiency and the power required to pump 2Q (i.e. 0.4 m'/s). Ignore local losses including the inlet and outlet velocity head and assume that the...
i cannot understand (E2.2.2) (3/12)^2...
Example 2.2 Pumping n Pentane 65 Example 2.2-Pumping nPentane Vent Storage tank 40 ft Flow Vent Supply tank 4.5 ft Punp n? Fig. E2.2 Pumping n-pentane. Fig. E2.2 shows an arrangement for pumping n-pentane ( 39.3 lbin/fts) at 25 C from one tank to another, through a vertical distance of 40 ft. All piping is 3-in. I.D. Assume that the overall frictional losses in the pipes are given (by methods to be described in Chapter...
Most questions answered within 3 hours.
-
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 1 hour ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 2 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 2 hours ago -
An empty test tube weighs 15.923 grams. Then,
MgCl2•6H2O is added into the test tube. After...
asked 2 hours ago -
Assume memory access is 10 units of time and disk access is
10000 units of time....
asked 2 hours ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 3 hours ago -
Under all the various types of market structures, firms
must eventually earn some economic profits for...
asked 2 hours ago -
Consider the following fitness regime for a single locus trait
with two co-dominant alleles: w11 =...
asked 3 hours ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 3 hours ago -
Please answer the question in brief.
Discuss the role of ERP in organizations. Are ERP tools...
asked 3 hours ago -
Discuss the pros and cons of collaborative software such
as SameTime. Does it increase productivity? What...
asked 3 hours ago -
Buying your in-laws a gift because it’s expected is
due to the ____________ motive of gift-giving....
asked 3 hours ago