Index Circular Stirling Stirling program source code Links
circular Gamma dual circular Alpha Siemens Alpha Gamma

Animation of the Beta type Stirling engine with crankshaft.
displacer
compression space displacer drive rod compression space
power piston connecting rod power piston
power piston power piston connection rot power piston power piston power piston connection rot power piston
crank crank 1 crank 1 crank 1 crank 1 crank 1 crank 1 crank 1 crank 1
crank 1 crank 1 crank 1 crank 1 crank 1 crank 1
hot gas in heater tube or expansion space.
heater
regenerator
cylinder wall
displacer
connecting duct
cold gas in cooler tube or compression space
cooling water
power piston
displacer drive rod
displacer connecting rod
power piston connecting rod
gudgeon pin (UK, wrist pin US)
power piston crank
displacer crank
crankshaft
Degree of cycle (of cylinder 1).
degree of cycle
0 30 60 90 120 150 180 210 240 270 300 330 360
Animation speed (cycles/minute.) Stops after 3 minutes.
animation speed
0 5 10 15 20 25 30 35 40 45 50 55 60
Info to calculate movements. -----------
 1. cm, crank radius of the displacer crank.
 2. cm, length of the displacer connecting rod.
 3. cm, crank radius of the power piston cranks.
 4. cm, length of the power piston connecting rods.
 5. degree, crank angle between the displacer crank and the power piston crank.

Info to calculate active volumes and volume changes. -----------
 6. cm, diameter displacer cylinder.
 7. cm, diameter of the displacer drive rod.
 8. cm, diameter power piston cylinder (zero means the power piston is in the same cylinder as the displacer.).
 9. cm, minimal distance between displacer and power piston.

Info to calculate dead volumes. -----------
10. cm, displacer end clearance at top.
11. cm, gap in hot cap.
12. cm, length of hot cap.

CALCULATED OUTPUTS.

%
100-
90-
80-
70-
60-
50-
40-
30-
20-
10-
0-
 Volume, red= hot, green= total, blue= cold
( % of maximum total volume)
c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c c
0 30 60 90 120 150 180 210 240 270 300 330 360
Angle degree

HOT CYLINDER VOLUMES
= hot cylinder end clearance dead volume, cm^3.
= hot active volume, cm^3.
+ -------------
= total maximum hot cylinder volume, cm^3.
COLD CYLINDER VOLUMES
= between piston and displacer end clearance cold dead volume, cm^3.
= cold cylinder active volume, cm^3.
+ -----------
= total maximum cold cylinder volume, cm^3.
REGENERATOR VOLUMES
= gap in hot cap dead volume, cm^3.
EXTRA
= displacer, hot piston area, cm^2.
= power piston, cold piston area, cm^2.
= overlap volume (volume of the space where the path of both pistons overlap in cold space), cm^3.
= overlap length (length where the path of both pistons overlap in cold space), cm.
= total maximum cylinder volume, cm^3.