Are there any specific formula for Ross D-60 Stirling engine

Discussion on Stirling or "hot air" engines (all types)
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sham.MY
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Joined: Mon Oct 31, 2016 6:26 pm

Are there any specific formula for Ross D-60 Stirling engine

Post by sham.MY » Mon Oct 31, 2016 6:33 pm

I'am currently trying to fabricate Andy Ross Stirling engine model D-60.
But firstly, i need to know if there is a specific formula used to calculate the volume of the cylinder
Can you guys help me?

Ian S C
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Location: New Zealand

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by Ian S C » Tue Nov 01, 2016 2:42 am

As the D-60 is an ALPHA type motor, both the hot and cold cylinders have an equal swept volume.
Ian S C

sham.MY
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Joined: Mon Oct 31, 2016 6:26 pm

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by sham.MY » Tue Nov 01, 2016 8:11 am

Are there any specific formula to calculate dead volume for expansion and compression cylinder?
Also,
are Max. hot volume the same as expansion swept volume? and
are Net swept volume the combination of expansion and compression swept volume ?

Ian S C
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Location: New Zealand

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by Ian S C » Thu Nov 03, 2016 1:57 am

The dead volume is that left at the ends of both pistons plus the transfer port, and the clearance at the side of the Heylandt Crown on the hot piston.
Ian S C

sham.MY
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Joined: Mon Oct 31, 2016 6:26 pm

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by sham.MY » Thu Nov 03, 2016 11:24 pm

Ian S C wrote:The dead volume is that left at the ends of both pistons plus the transfer port, and the clearance at the side of the Heylandt Crown on the hot piston.
Ian S C
So, we can just give any value for the dead volume are we?
or are they any ways to determine the dead volume in expansion and compression part of a Stirling engine?

Ian S C
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Location: New Zealand

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by Ian S C » Fri Nov 04, 2016 1:58 am

Mathmatics, but don't get too worried about it, it's best to keep the dead space to a minimum, but I assume you are going to include the regenerator, so that is dead space that is actually doing something.
Ian S C

sham.MY
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Joined: Mon Oct 31, 2016 6:26 pm

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by sham.MY » Sat Nov 05, 2016 7:46 am

Image

Based on this image, do i assume that the dead space for this Stirling engine is just the dead space of heater, regenerator and cooler?
Do the dead space include the expansion and compression space?
If so do i just assume the value of the dead space?

Ian S C
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Location: New Zealand

Re: Are there any specific formula for Ross D-60 Stirling engine

Post by Ian S C » Sun Nov 06, 2016 2:29 am

Yes , all space not covered by the pistons. Ian S C

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