SWEPT VOLUME - SIZE OF AN ENGINE

[Alphax]

This is really a question about definition of size of any Stirling engine.


How is the size of any Stirling engine determined? Is it:-

A. The swept volume of power cylinder(s) only?

B. The swept volume of displacer cylinder(s) only?

C. The combined swept volume of power cylinder(s) and displacer cylinders(s) only?

D. None of the above.


Is there any consensus amongst experts in the field of Stirling engines?

[staska]

Its all depends on configuration. 90 degree alpha with equal bore and stroke per cylinder swept volume is equal to 1.41 x single cylinder swept volume. For beta/gamma - equal to power cylinder. But phase angle is not equal to fisplacer and power piston angle differencies.

Add different swept volumes, add other than 90degree for alpha engine - and you have a lot of math to do. But each gamma could be converted to similar alph. And vice versa. Beta could be tricky due to negative volume, but still doable

[Tom Booth]

This is really a question about definition of size of any Stirling engine.


How is the size of any Stirling engine determined?

With a ruler?

BTW my new (used stainless steel fire extinguisher) displacer chamber for scaling up the little red engine has finally arrived.

I was begining to think it must have gotten lost in the mail, it's about two weeks past the "estimated arrival time"

Resize_20220222_091304_4120.jpg (250.53 KiB) Viewed 2926 times

[Nobody]

I would like to have available as much information as possible without having information overload.

Mass
Overall volume
Max Power output
Continuous Power output
Max Torque output
RPM at max Power
RPM at max Torque
Size of power cylinder and piston
Stroke
Size of displacer position
Pulse tube dimensions
Materials
Color surface characteristics

E.t.c., ...

Sorry!