What is Pump: Definition and 653 Discussions

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power, and come in many sizes, from microscopic for use in medical applications, to large industrial pumps.
Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis.
When a casing contains only one revolving impeller, it is called a single-stage pump. When a casing contains two or more revolving impellers, it is called a double- or multi-stage pump.
In biology, many different types of chemical and biomechanical pumps have evolved; biomimicry is sometimes used in developing new types of mechanical pumps.

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  1. M

    Pump Selection: Manual vs. Existing Pump

    accordin to my last to posts here i found this special pump which has materials designed to carry a high press but the problem now i found a pump on the machine is bigger than the one in the manual so shall i buy the pump from manual or as the existing pump ?
  2. K

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  3. F

    How Much Energy Does a Refrigerator Use in a Single Day?

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  4. K

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  5. I

    Heat Pump Work: Find Min Work to Heat Indoor Environment to 27C

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  6. D

    Force due to a submersible water pump to move an underwater vehicle

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  7. M

    Pump Selection for Hms and Hmd - What's the Difference?

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  8. M

    Selecting a Centrifugal Pump for High Pressure Circulation in a Closed System

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  9. L

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  10. Low-Q

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  11. D

    Why Does Pump Head Decrease with Constant Velocity?

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  12. B

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  13. B

    Selecting the Right Vacuum Pump for a 2 Lit Container

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  14. F

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  15. F

    Does Pressure Affect Heat Absorption and Release in Heat Pumps?

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  16. N

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  17. H

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  18. D

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  19. F

    What is the power of the pump?

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  20. M

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  21. R

    Why magent is needed in pump design

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  22. N

    Submersible Water Pump, 4.3 amps, must work in the water,

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  23. N

    Electricity, Submersible Water Pump, 4.3 Amps

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  24. S

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  25. H

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  26. S

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  27. B

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  28. S

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  29. B

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  30. I_am_learning

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  31. J

    Submersible 480v pump w/out ground

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  32. F

    Building a high flow rate pulsatile pump

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  33. Evil Bunny

    Solving the Mystery of the 4-5 Amp Draw on a 0.5 HP Pump

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  34. M

    Aircraft Fuel Booster Pump - Centrifugal & Immersed in Fuel

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  35. B

    Bernouli equation with pump work input

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  36. J

    Work input to a pump in a rankine cycle problem

    If a question asks for the "quantity of work input to the pump" is it acceptable to present the answer as positive. I think so because the direction of energy transfer has been defined in the question itself hence there is no need for a sign on the answer. All that's asked for is the...
  37. M

    Heat Pump Thermodynamics Question

    I have a general question, it's not homework or anything, we are studying heat pumps and thermal efficiencies and COP. There's an example in my book that has a heat pump that is heating a house and it asks to find the minimum theoretical cost per day. Of course the solution and detailed steps...
  38. E

    Water Pump Pressure: Investigating Load Failure in Engine Systems

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  39. P

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  40. B

    Build a Solar-Powered Pool Pump: What You Need to Know

    hey i have a 5W pv panel and was wondering if i could build some sort of circuit to run my pool pump? was wondering what i would need ... any thoughts would be appreciated
  41. P

    Calculating Water Pump Efficiency and Work Rate

    Hello, Was wondering if anybody could help with the following question as I am struggling, and this area is not my strong point. Note this is not homework purely self-study, out of curiosity to help me understand the subject area in more detail. In each minute a pump draws 2.4m^3 of water...
  42. T

    Pump Jack force - fracture mechanics

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  43. P

    Finding the Right Electric Motor for My Pump Setup

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  44. J

    How Much Work Was Done by the Pump to Drain a Flooded Basement?

    Homework Statement The floor of a basement in a house is 3.2m blow the grade of a window sill. If the Basement has flooded to a depth of 0.44m and the basement is 10.3m by 18.4m. If the water leaves the pipe at 2.4m/s, how much work was done by the pump. (Density of water is 1000 kg/m^3)...
  45. R

    Heat Pump Coefficient Question

    1. You have a heat pump which has a coefficient of performance (C.O.P.) that is 17% of the maximum achievable. You want to heat your house to 20◦C. At what outside temperature does the heat pump become not useful? 2. C.O.P. = 1/(T1/T0 - 1) T1= Temperature of the outside...
  46. K

    Carnot Heat Engine to Carnot Heat Pump

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  47. C

    When should i (on paper) pump a network with a source to determine values?

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  48. M

    Calculating Hydraulic Pump Area for Efficient Load Lifting

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  49. R

    How do turbo molecular pumps create ultra-high vacuum levels?

    I understand that the purpose of a vacuum pump is to remove the gas molecules from a sealed volume to create a partial vacuum, but just what is actually happening to the gas molecules throughout this process? I have been researching online, but have not found any guides that clearly explain the...
  50. R

    Slurry pipeline and pump head

    Hey folks, I'm trying to do a bit of back-of-the-envelope stuff for a hypothetical slurry pipeline, but it's been a while since I've done any fluid mech./dyn., and I have no confidence in my numbers -- please jump in wherever you catch an error. First of all, I'm making the assumption that...
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