Laminar flow stirling engine.

This engine is made from parts I bought from a hardware store and old parts of all kinds of machines.
The flywheel for example was made from the reading head of an old VHS-recorder. Just like all laminar flow motors the cyllinder was made from a test tube (16mm) Only the piston and the restrictor where custom made with a lathe from a small pease of aluminium.

It took me some while before I had my engine running, I found out that some factors like restistance of the flywheel and the piston, but also the diameter and shape of the restriction hole are comming pretty critical.

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Sadly I cannot explain the exact principle of the laminar flow engine since there are a few theories. But I can give a litle discriprion of the theory that seems the right one to me. First the test tube is heatet by the alcohol flame, the heat of the flame is transferet from the test tube to the pot sourcer. When the air insight the tube heats, it expans, the expandet air will be pushed through the restriction, when it pulls the piston forward the expanded air rapidly cools down so it will schrink directly and the piston will be pulled back. Next the cycle repeats.

Category:

Science & Technology

Tags:

• thermoacoustic engine

[omaslipper92]

jep! nice one!