Exotic Research Conference

NASA EngineThe Stirling Engine...

Revival of a "Forgotten" Technology!

200 years later... and the Stirling technology finally takes hold... even at NASA!

600217, Don Isaac, Jr. - The Stirling Engine...Revival of Forgotten Technology! (VHS) Retail Price: 29.95
600217, Don Isaac, Jr. - The Stirling Engine...Revival of Forgotten Technology!(VHS) Member Price: 26.95

Don Isaac, Jr. Don Isaac, Jr.
Tamin Enterprises
311 Grove Street
Half Moon Bay, CA 94019-2005


Don Isaac received his BSME from Northeastern University in Boston, MA (1970). He began work as a design engineer for Square D at the Motor Control Division in Milwaukee and later at the Circuit Breaker Division in Cedar Rapids. Moving around the Midwest, he also worked in the welding machinery, nuclear plant service, and machine tool industries. In 1979 he moved to California, where he worked for Lockheed Missiles and Space. There, he was involved in projects ranging from large vacuum systems design/testing to radiation spectrometers and cryogenic systems for space flight.

In 1995 he left Lockheed to develop Stirling engines at Tamin Enterprises. Tamin Enterprises was founded in 1983 as a partime activity developing counted cross stitch designs and kits. Tamin's activities have evolved into a full time business with activities including machine/tool design, Stirling engine design, and metal sculpture production.
Robert Stirling, a minister of the Church of Scotland , invented and patented (1816) the Stirling engine as a safe alternative to steam engines. (Early steam engines were notorious for exploding.. killing and maiming those who were nearby.) An active minister and inventor all his life, his most important invention was the "regenerator" or "economizer" used to save heat and increase efficiency in Stirling engines and many other industrial processes.

Stirling’s engines were known as "hot air engines" until the 1940's when other gasses such as helium and hydrogen were used as the working fluid. (At that time the term "Stirling engine" was adopted industrywide.) Stirling’s engines couldn't explode and were more efficient than the steam engines then in use.

Today, the Stirling has the reputation of being one of the most efficient engines in the world. In the 1800s, a French mathematician (Carnot) came up with the calculation of maximum efficiency possible with any heat engine:
[(THOT - TCOLD)/THOT] X 100 = Max Efficiency
where T= temperature in Kelvin or Rankine
Stirling engines (with perfect regeneration) match this cycle. Real Stirling engines can reach 50% of the maximum theoretical value—an incredibly high percentage!

The Stirling engine is a reversible device. If you heat one end and cool the other, you get mechanical work out, but if you put mechanical work in, by connecting an electric motor, one end will get hot and the other end will get cold— extremely cold. This makes them valuable in cryogenics (the science of things that are exceedingly cold). Stirling coolers have been made that will cool below 10°K. Micro Stirling coolers are mass produced for cooling infrared chips down to 80°K for use in night vision devices.
Tamin Industries

Tamin Industries'

This engine ran for the first time on 31 MAY 94 and was demonstrated during the informal Stirling session at the 1994 IECEC conference at Monterey California. The engine was hard starting then because of leaks in the displacer which was not completly welded closed. Seal welding all around both ends eliminated the dead volume and resulted in increased compression (a very snappy engine) and easy starting. Once the heater head is heated to operating temperature, the engine will start by slowly rotating the flywheel past piston top dead center. The engine will snap past top dead center and continue to run.

As an "external combustion" machine like the steam engine, the Stirling engine can be fueled by many sources including non-combustion solar and nuclear. Another advantage of external combustion is that combustion takes place at a relatively constant atmospheric pressure and at constant temperature. This facilitates control of the combustion process for cleaner and more efficient burning than can be achieved with internal combustion taking place in milliseconds over rapidly changing temperatures and pressures.

Tamin Enterprises is developing a series of Stirling engines of up to 15 kW (20 hp) output for household and light commercial uses. Three related engine projects are in progress: TESE001, TESE002, and TESE004. Stirling cycle engines are ideal for applications such as generator sets, lawn and garden equipment, pumps, outboard motors, chain saws, and hybrid motor vehicles.

During this session, Don will demonstrate a variety of Stirling engines and introduce us to the latest in Stirling technology from his company. This is an excellent opportunity to learn of a viable non-polluting technology in your future!

Learn more about an exciting technology with a bright future!

Order your copy of this conference videotape!!!

Members Only: Select the member priced item to receive your 10% discount!
600217, Don Isaac Jr. - The Stirling Engine... (VHS) Retail Price: 29.95
600217, Don Isaac Jr. - The Stirling Engine... (VHS) Member Price: 26.95

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