Re: Re: Stirling Engines

["Ken Boak" <kenboak@stirlingservice.freeserve.co.uk>]

Peter & Stovers,

The Viebach Stirling will produce about 500W of shaft power, making its
thermomechanical efficiency about 16.6%.

As it is designed for combined heat and power operation, where fuel would
have to be burned for heating anyway (say a wood stove in winter) the fact
that it can convert more than 10% of the heta energy in the wood into
electricity should not be dismissed as being inefficient.

All this is done by a unit in a box 30" x 24" x 24"  which makes no more
noise than a domestic washing machine.

If you want to burn logs to make power, you can, or if you want to burn used
sump oil, or waste veg oil, or wood pellets or LPG or natural gas these
will all run the sam ebasic Stirling driven alternator.

This is  a niche application for a very simple prime mover - a very elegant
heat engine.   The problem is that the Stirling is too frequently applied as
a replacement to an IC engine, and this is its failing. Instead you should
use the Stirling in applications where you cannot use an IC engine for
reasons of noise, pollution or fuel restrictions - or where you just do not
need many horsepower.


Ken



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