Robinson #5 hot air engine 2009 K&O Engine show Winfield Ks

Robinson #5 hot air engine operating at the Kansas and Oklahoma Steam and Gas engine associations 28th annual show Aug 14-16, 2009
http://www.kosteamgas.org

This engine is powered by a fire in the firebox under the engine. It can be powered by anything that will burn and create sufficient heat for expansion of the closed loop power chamber. The motion is caused by a displacer which moves from the hot end of a chamber heated by an external fire to a cold end of the same chamber farthest from the fire. By displacing the air to both ends of the chamber it alternately becomes hotter and colder, both expanding and contracting in the bottom vertical chamber. This chamber is attached by a air passageway to the horizontal power piston you see moving in and out, when the displacer moves up air is heated and expands, the power piston is pushes the crankshaft creating power. Alternately the displacer is pushed down and the air cools rapidly creating a lower pressure or possible slight vaccum, then the horizontal power piston moves away from the crankshaft while reducing the total area of the closed loop system under less pressure or vaccum. .. Then the cycle starts all over again. Some call this a hot air engine, others a stirling cycle engine. To correctly identify the Stirling cycle the displacer is renamed an economizer and is designed to recycle heat and cold when it moves from one extreme to the other so that less heat or cool is needed to create the same power. The expansion and contraction in the engine takes place without an exhaust or intake stroke. The outer end of the horizontal power cylinder contains a valve which under vacuum conditions will replenish any air leaked to the atmosphere through moving surfaces in the closed loop of working fluid. I have attempted to explain the cycle in terms that most can understand, please pass this video on to your friends who want to know more about the External Combustion, Hot Air & Stirling mechanics.

Category:

Science & Technology

Tags:

• hot
• air
• engine
• robinson

[p930racer]

@railrdr523 You have much to learn about thermodynamics. Sterling engines are one of the most efficient engine types out there, the only thing that comes close are diesels. The big limitation for stirlings is the amount of power they put out for their displacement if they are not pressurized above atmospheric pressure.

[SWINGREGORY]

COOL