Free piston Question

Discussion on Stirling or "hot air" engines (all types)
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burnit0017
Posts: 76
Joined: Sat Jun 26, 2010 9:54 am

Free piston Question

Post by burnit0017 »

[youtube]https://youtu.be/dOSGpzGhrJQ[/youtube]

@ 1:09, what is meant by no dead volume inside displacer?
tibsim

Re: Free piston Question

Post by tibsim »

Air is a spring. Any space (air), what we does not use (heating- cooling) or intentionally as a spring (on good frequency) it worsens the efficiency. Like when you're trying to ride a bike but springs are under your feet.
jamesjohnson5551
Posts: 1
Joined: Tue Jun 21, 2016 4:05 am

Re: Free piston Question

Post by jamesjohnson5551 »

Thanks for sharing. The Stirling free-piston system has many attractive attributes. Specifically, the Stirling cycle is the most efficient thermodynamic heat engine cycle that exists. concepts considered for SP-100 selection, the Stirling cycle has the highest efficiency for the same given heat input and heat rejection temperatures. Stirling system employs the gas bearing - either hydrodynamic of hydrostatic - there is the potential for long life and high reliability.
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