Recent content by alokkumar

@jbriggs444 A quick question. In a practical wind turbine system. The electrical generator is drawing continuous energy out of the turbine system. So in that case wouldn't the rpm of the overall turbine assemble (including generator housing) will reduce ?? I/2*I*omega*omega = t * P(rot) -...

So in this equation, the rpm keeps varying with respect to time. Great !

Thats brilliance ! Great job and many thanks... You are genius... ! I was missing the last calculation of equating KE with Power into time. Thanks again !

This is absolutely clear... Please continue..

Great let me answer ! How efficient is the turbine at harvesting the energy from the wind? = 35 to 38% What is the turbine's cross-sectional area? = radius of blade = 1.2 m [Cross section = (22/7)*1.2*1.2 ] How much energy is in t seconds worth of 5 m/s wind? = Very good question. This is...

Assume a closed door experiment. Turbine initial rpm = 0 rad/s Wind velocity = 0 m/s After some time t sec if we blow wind with 5 m/s then turbine will start to rotate. What will be the rotational rpm of turbine ?

What is the source of rotational energy on turbine ?? I guess it is the kinetic energy of parcel of air. =1/2 *m*v*v As per law of conservation of energy. It is the KE of wind which converts into rotational KE of wind turbine + losses. So isn't there a relationship? I mean a formula to...

This isn't funny 😃, I hope 1kw doesn't hurt.

Torque curve of the generator will be chosen after the turbine rotor rpm is determined in relation to the input velocity of wind.

Indeed, I am sure there must be relationship of input Kinetic Energy of parcel of air with the Rotational Energy of Wind turbine + losses and unused energy. Simply speaking there has to be direct relationship of input energy of wind with the rotational velocity of turbine blade. If this is...

[Reply edited by a Mentor to remove a mild insult] The wind turbine is not yet built, so tip speed ratio is not known. Unless turbine assembly is ready then only tip speed can be measured. Question is simple, how to use law of conservation of energy to determine rotational body rpm.

Design from scratch and so need the answer.

I am almost ready with the blade design and now wants to know what rpm the generators to choose. I asked this question 6 years ago and incidentally there is no specific answer. If there is a formula to determine the rpm of rotor blades w.r.t input velocity of wind. Then I can build electrical...

How to determine rpm of rotational body such as wind turbine blades. Is there any relation of input wind velocity with the blade rpm? If the rpm formula in relation to input wind velocity is known then I can choose exact matching rpm for electrical generator for a given power output. As per...

Thanks mfb for the reply ! In the first calculation, assume Cp, Wind velocity, air density, length of the blade is known then we can calculate Power captured by Wind Turbine from wind. But, how can we compute angular velocity ? You are saying angular velocity will increase until net torque...