What equation would be used to size a Stirling engine

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davidashton
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Joined: Wed Nov 02, 2005 3:35 pm
First Name: David
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What equation would be used to size a Stirling engine

Post by davidashton »

Presumably there is an equation that could take a Stirling engine of
a certain size and it would calculate the hp and torque produced from
it. Conversely, there should be a equation to size a Stirling engine
to meet a criteria of 100 hp, and 200ftlbs of torque for instance.
What is that equation or series of equations, and can you recommend
books?
fvnorman
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Response to What equation would be used to size a Stirling engine

Post by fvnorman »

You can use the Beale formula to estimate power to a first approximation. You input the mean engine pressure and the swept volume of the pistons to get the power.

Torque is simply (power)/(2*3.14158*freq), where freq is the engine rotational speed in Hz. If you input power in watts, the torque will be in newton-meters.

Here's an explanation on power estimate using the Beale formula:

http://newenergydirection.com/blog/2008 ... -estimate/
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