ST 05 G Stirling Engine 300 – 500 Watt

Gamma Type

built from a set of sand castings and readily available materials

The ST 05 G Stirling engine is a gamma type Stirling engine with a tubular heater. It consists of a crankcase with the displacer cylinder and power cylinder arranged at right angels to one another. The engine is based on drawings and a set of eleven sand castings. The engine has been designed to form part of an integrated home heat and power system and can provide most of the domestic heating and electrical power requirements. The engine is gas fired but can be adapted to run on a wide range of fuels, including solid fuels, oil/paraffin, biomass or combustible industrial waste such as wood chips or sawdust.

Specifications:

Working gas	air
Pressure	10 bar	150 psi
Working piston bore	80 mm	3.149‘‘
Displacer diameter	96 mm	3.779‘‘
Stroke	75 mm	2.952‘‘
Rotating speed	600 rpm
Torque	8 Nm
Power output (mech)	300 – 500 Watt	0.4 to 0.67 hp
Power at 10 bar	355 W	0.475 hp
Gas consumption (propane)	225 g/hour (at 300 W power output)
Heat input (for 300 W output)	2.862 kW	9769 Btu/h
Thermal mechanical efficiency

These consumption figures are approximate and based on the first prototype engine using a standard propane burner. With the addition of an air pre-heater, and condensing heat exchangers the thermal mechanical efficiency can be raised to an estimated 15% to 20% and the overall efficiency of the co-generation unit can be raised to about 90%.

Engine designed and produced by Dieter Viebach, Spielhahnstr.17, D – 83059 Kolbermoor, Germany

Tel. and Fax ++49 – (0)8031-97727