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Roxy Hasan
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i want to make a generator by rotating turbine by water... i want a equation for speed of the armeture and others please help
Could you be more specific? An equation is probably one of the last things you need to consider.Roxy Hasan said:i want to make a generator by rotating turbine by water... i want a equation for speed of the armeture and others please help
anorlunda said:If you want to make a hydro power project, the place to start is with your water resources. You need a flow of water running down a vertical distance.
How much water flow (liters per hour) do you have?
How much vertical distance (meters) does the water fall?
thnx .. but i can't find any suitable or understanding equation from there.. there is all projects and so on.. but I can't find the right formula or way to apply itjrmichler said:Google is your friend. Good search terms to get started are small hydro generator. Since you are studying to be a civil engineer, a project like this is definitely in your specialty.
i know but i i want to creare a project for exibithion.. where i will need to work a 2Hp water pump ... i want to work on structure of water way so i need to know the speed of water then i can make the structure of water way..anorlunda said:If you really want to build it, you must start with the numbers for the water, not for the electricity.
Roxy Hasan said:i know but i i want to creare a project for exibithion.. where i will need to work a 2Hp water pump ... i want to work on structure of water way so i need to know the speed of water then i can make the structure of water way..
Roxy Hasan said:i want a equation for speed of the armeture
Here is a primer on motors. It introduces the concepts of torque and power which will be fundamental to your design effort.Roxy Hasan said:i need to create at leadt 2 hp power from the dianamo
jim hardy said:A question well stated is half answered.thnx very very much... i needed just these things for my projects... i really wanted this equation and the types of information you just provide... Here is a primer on motors. It introduces the concepts of torque and power which will be fundamental to your design effort.
http://www.aspenmotiontech.com/docs/brushless-dc-motor-primer.pdf
It also touches on electromagnetics.
I think your starting point will be here:
horsepower = 2pi X torqueft-lbs X rom / 33,000
so your speed depends on the turbine with which you intend to drive your generator.
You'll have to pick a turbine size and speed from the volume and velocity of water that you have available at your turbine.
Here's a primer on hydraulic power of a pump. A turbine will be similar.
https://www.thermexcel.com/english/ressourc/pumps.htm
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that should give you basic vocabulary.
Here's another primer on pump design.
www.psaincorporated.com/files/Pump_Basics.ppt
a turbine is basically a pump with flow reversed.
Then look for a dynamo that'll do what you want.
To design a dynamo from scratch you'll have to become familiar with magnetic unts .
Unless you have access to a pretty complete machine shop, I'd suggest you adapt car parts.
Energy is conserved. So you'll have to extract at least 2hp from your water source.
2hp will move a LOT of water , so you're looking at a sizeable machine.
Go to the hardware store and look at a 2hp yard sprinkler pump.
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An automobile torque converter has a turbine in it.
"Home Shop Machinist" magazine a few years back featured steam turbines made from them.
I suppose they'd work with water but I've never seen it done...would be an interesting project
I think you've bitten off a lot for a beginner.
You might look into a simple overthrow water wheel and car alternator driven with bicycle chain.
good luck. .
old jim
The equation for calculating the output voltage of a generator is V = B x L x N x ω x cos(θ), where V represents voltage, B is the magnetic field strength, L is the length of the wire in the generator, N is the number of turns in the coil, ω is the angular velocity, and θ is the angle between the magnetic field and the normal to the coil.
The output power of a generator can be calculated using the equation P = VI, where P represents power, V is the voltage, and I is the current.
The efficiency of a generator can be calculated using the equation η = (Pout / Pin) x 100%, where η represents efficiency, Pout is the output power, and Pin is the input power.
The size of the wire needed for a generator can be determined using the equation d = √(4 x R x L x I / ρ), where d is the wire diameter, R is the resistance of the wire, L is the length of the wire, I is the current, and ρ is the resistivity of the wire material.
The frequency of a generator's output can be calculated using the equation f = P / (2 x π x N), where f represents frequency, P is the number of poles in the generator, and N is the rotational speed in revolutions per second.