Monday, October 24, 2011

How can i set up an electrical water pump in irrigation project (Describe Brifely)?

I want to set up an electrical pump in our irrigation plant area which is in village (Bangladesh) , So i need the idea how i can steup it and what will be the total costing for this kind of project.How can i set up an electrical water pump in irrigation project (Describe Brifely)?First you need to detemine how many liters per hour are needed, and how many meters the water must be lifted.



Then, where do you get the electricity? Can you connect to the grid, or do you need a generator?



Finally, do you need to make any dams or channels? How long? What type of terrain?



Good luck!How can i set up an electrical water pump in irrigation project (Describe Brifely)?First of all, a bit of orientation about what we are talking about:



A motor driven centrifugal pump characterized by a unique housing, motor and impeller which provide the pump with a simple low-cost construction, compact size, quiet operation and other features that adapt the pump for use in a trailer, camper or the like for pumping water from a storage tank to a tap or other outlet.



A centrifugal pump converts the input power to kinetic energy in the liquid by accelerating the liquid by a revolving device - an impeller. The most common type is the 'volute pump'. Fluid enters the pump through the eye of the impeller which rotates at high speed. The fluid is accelerated radially outward from the pump casing. A vacuum is created at the impellers eye that continuously draws more fluid into the pump.



Pressure and Head: If the discharge of a centrifugal pump is pointed straight up into the air the fluid will pump to a certain height - or head - called the 'shut off head'. This maximum head is mainly determined by the outside diameter of the pump's impeller and the speed of the rotating shaft. The head will change as the capacity of the pump is altered.



The main reason for using head instead of pressure to measure a centrifugal pump's energy is that the pressure from a pump will change if the specific gravity (weight) of the liquid changes, but the head will not.



It is important to understand that the pump will pump all fluids to the same height if the shaft is turning at the same rpm. The only difference between the fluids is the amount of power it takes to get the shaft to the proper rpm. The higher the specific gravity of the fluid the more power is required.



Cost for single phase electric motor driven centrifugal pump for 1.5hp is about Tk 5,000/- by RFL. Cost for single phase electric motor driven centrifugal pump for 1.75hp is about Tk 8,000/- from KSB. Pedrolla pumps are in-between KSB %26amp; RFL prices.



Electric panel board, starters, wires would cost you another Tk. 5,000/- depending on what type and quality of starters you are planning to buy.



The boring cost with pipings for minimum 60 feet deep-well will cost you Tk. 12 to 15,000/-



3-inch Diameter intake and delivery pipe (total 120 feet PVC pipes) with 8hp electric motor would entail Tk. 60,000/- to Tk. 75,000/- for the installation. The running cost will be mostly to the electricity bills which has been subsidized by the government, but would come to around Tk. 3 per kilowatt-hour.



Hope above would help.
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