How Much Power Does a Pump Need to Move Water Adiabatically?

  • Thread starter Thread starter Jack Easton
  • Start date Start date
  • Tags Tags
    Thermodynamics
Click For Summary

Homework Help Overview

The discussion revolves around determining the power required by a pump to move water adiabatically through a pipe. The scenario includes specific parameters such as pipe diameter, water temperature, pressure, vertical lift, and mass flow rate.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants are exploring the application of the steady flow energy equation to calculate the power needed by the pump. There are inquiries about the availability of a referenced figure and whether the steady flow energy equation has been formulated for the given system.

Discussion Status

The discussion is ongoing, with participants seeking clarification and additional information. Some have reiterated the problem statement, while others have prompted for the steady flow energy equation to be written out, indicating a collaborative effort to understand the problem better.

Contextual Notes

There is a request for a visual aid (Figure Q2) that is referenced in the problem but not provided in the thread. The assumptions of adiabatic and frictionless conditions are also under consideration.

Jack Easton
Messages
3
Reaction score
0
HOMEWORK PROBLEMS REQUIRE USE OF HOMEWORK TEMPLATE. THIS WAS ORIGINALLY POSTED IN WRONG FORUM.
I have been struggling with this question for a while, please could somebody help?
A pump is used to move water through a short pipe of diameter 120 mm as shown in Figure Q2. The water has a temperature of 18℃ and a pressure of 100 kPa (Absolute). The pump moves the water up a vertical distance of 3 m and the water exits to atmospheric pressure. Assuming the process is adiabatic and frictionless, and the required mass flow rate is 3.1 kg/s, determine, using the steady flow energy equation, the power required by the pump.

thanks
 
Physics news on Phys.org
Is there a Figure Q2 which can be posted?
 
this is figure Q2
 

Attachments

  • Screen Shot 2015-06-20 at 19.17.30.png
    Screen Shot 2015-06-20 at 19.17.30.png
    5 KB · Views: 503
Jack Easton said:
I have been struggling with this question for a while, please could somebody help?

A pump is used to move water through a short pipe of diameter 120 mm as shown in Figure Q2. The water has a temperature of 18℃ and a pressure of 100 kPa (Absolute). The pump moves the water up a vertical distance of 3 m and the water exits to atmospheric pressure. Assuming the process is adiabatic and frictionless, and the required mass flow rate is 3.1 kg/s, determine, using the steady flow energy equation, the power required by the pump.

thanks

Have you written the steady flow energy equation for this system?
 

Similar threads

Using the steady flow energy equation, find the power required
  • · Replies 11 ·
Replies
11
Views
4K
Adiabatic compressed air and energy calculations
  • · Replies 60 ·
3
Replies
60
Views
7K
Pressure of water exiting a hole in PVC
  • · Replies 12 ·
Replies
12
Views
4K
How Much Power Does a Pump Need to Move Water from a Deep Hole?
  • · Replies 2 ·
Replies
2
Views
2K
How Does a Pump Calculate Work When Transitioning from Water to Air Underwater?
  • · Replies 2 ·
Replies
2
Views
3K
Power to raise water from point A to B
  • · Replies 10 ·
Replies
10
Views
2K
How Much Force is Needed to Hold a Hose Emitting Water at 20 m/s?
  • · Replies 8 ·
Replies
8
Views
4K
Force due to a submersible water pump to move an underwater vehicle
  • · Replies 1 ·
Replies
1
Views
3K
How Does Adiabatic Compression Affect Steam and Water Mixtures?
  • · Replies 7 ·
Replies
7
Views
5K
How to calculate (pump) power to maintain a static head?
  • · Replies 6 ·
Replies
6
Views
3K