# Measurement of power associated witha vertical shaft

How can I measure the power associated with a vertical rotating shaft (similar to the shaft of a vertical axis wind turbine).
power=Torque*angular velocity
Angular velocity can be found by using tacho meter or spectroscope.. but i am confused how to measure the torque...

The only correct answer is with difficulty. Also how much do you have to spend and how accurate do you need to be? You might do it directly by measuring the twist in the shaft, I've seen this done in two ways.
A) You have two toothed wheels at either end of a torque tube by looking at the phase change of the waveform from magnetic pickups on each wheel you can calculate the twist of the tube.
B) You have a scribed line on a torque tube, by looking at the line, under a strobe light so the line appears stationary, through a microscope with a suitable grid and thus measuring the twist.
In both cases you need a calibrated torque tube.
Depending on what you are driving you might be better calculating the power from the driven device.

Is there a load connected to it?

## 1. What is the purpose of measuring power associated with a vertical shaft?

The purpose of measuring power associated with a vertical shaft is to determine the amount of energy being transferred through the shaft. This measurement is important in various industries, such as power generation, manufacturing, and transportation, as it can help optimize processes and ensure efficient use of resources.

## 2. How is power associated with a vertical shaft measured?

Power associated with a vertical shaft is typically measured using a dynamometer or a torque meter. These instruments measure the torque and rotational speed of the shaft, which are then used to calculate the power being transferred.

## 3. What units are used to measure power associated with a vertical shaft?

The most commonly used units for measuring power associated with a vertical shaft are horsepower (hp) and kilowatts (kW). Other units such as watts (W) and foot-pounds per minute (ft-lb/min) may also be used, depending on the specific application.

## 4. What factors can affect the accuracy of power measurements for a vertical shaft?

Several factors can affect the accuracy of power measurements for a vertical shaft, including the type and condition of the measuring instrument, the alignment and balance of the shaft, and external factors such as temperature and humidity. It is important to carefully calibrate and maintain the measuring equipment to ensure accurate readings.

## 5. Can power associated with a vertical shaft be converted to other forms of energy?

Yes, power associated with a vertical shaft can be converted to other forms of energy, such as electrical energy, through the use of generators. This allows for the efficient transfer and utilization of energy in different systems and processes.