Calculate the power produced by a wheel

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    Power produced Wheel
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Discussion Overview

The discussion revolves around calculating the power produced by a Stirling engine, specifically focusing on the information available such as weight, RPM, and the weight of engine components. Participants explore methods for determining power in circular motion without direct thermodynamic data.

Discussion Character

  • Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant suggests that power cannot be calculated with the given information, emphasizing the need for thermodynamic data about the cylinder.
  • Another participant agrees, noting that the power produced is likely very low, primarily compensating for friction and air resistance, implying that if it were higher, the flywheel would accelerate.
  • A different viewpoint proposes measuring torque and RPM as a method to calculate power, suggesting a practical approach involving weighing scales to determine torque.
  • The formula for power in terms of torque and angular velocity is mentioned, but the details of its application are not fully elaborated.

Areas of Agreement / Disagreement

Participants generally disagree on the feasibility of calculating power with the available data. While some assert that thermodynamic information is essential, others propose alternative methods involving torque measurement.

Contextual Notes

The discussion highlights limitations related to the lack of thermodynamic specifications and the dependence on specific measurements for torque and RPM. The applicability of the proposed methods remains uncertain without further data.

Who May Find This Useful

Individuals interested in thermodynamics, engine mechanics, and experimental physics may find this discussion relevant.

TheAnt
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Hi,

I am trying to calculate the power produced by this Stirling engine:
low_temperature_stirling_engine_1.jpg

I know there is a way of finding by measuring the pressure and temperature inside the engine but the only data I have is the weight the RPM and the weight of every part of the engine. I understand how to calculate power for a linear motion but not for a circular motion.

Thanks
 
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You can't calculate the power with the information provided. You need thermodynamic information about the cylinder -- the specs of the wheel are actually completely irrelevant.
 
+1.

The power produced is very low. Just enough to match friction and other losses such as air resistance in the flywheel. If it was any greater the flywheel would accelerate.
 
Perhaps you could calculate the power by measuring the torque and rpm? To measure the torque try putting weighing scales under the end like this (It's not quite that simple but you get the idea). Once you have the torque you can use...

Power (in Watts) = torque (in Newton Meters) * angular velocity (in Radians per second)

Sterling Engine.jpg
 

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