Stirling DK - World's leading provider of biomass-fuelled Stirling engines

Frequently Asked Questions

Do you deliver...	Answer	Details
Engines with a higher electrical output?	No	All of our products are based around the 35 kWe Stirling engine.
Plants with more than 35 kW electric output?	Yes	Several units can be combined to deliver an electric output greater than 35 kWe.
Plants with more than 140 kW thermal output?	Yes	Several units can be combined to deliver a heat output greater than 140 kWth.
Pyrolysis plants?	No	We are presently testing our first pyrolysis-based application. We cannot offer such an installation until the testing has proved fully satisfactory operating performance.
Installations with smaller engines?	No	The 35 kWe SD4-E engine is the only engine which is currently being offered commercially. We are not testing smaller engines.
Solar heat applications?	No	Our Stirling engines are developed for biomass combustion and are not suitable for solar heat applications.
Waste heat applications?	No	We have developed our engines specifically for high-temperature biomass combustion with a temperature between 1,000 and 1,300 C. We cannot run our engines using low-temperature waste heat.
Plants for solid fuel types other than fresh wood chips?	No	Our installations have, until now, only been tested with fresh wood chips. Although many other biomass types are expected to work without any problems, it has not yet been tested thoroughly. Possible issues include corrosion and disturbance to the system due to a high ash content and/or low ash melting temperatures causing the ash to melt onto the Stirling engine heater(s)
Turnkey plants?	No	We are equipment manufacturers, not contractors. We are not prepared to undertake installation or operation of our plants.
Outside of Northern Europe?	No	We do not deliver commercial installations outside of Northern Europe at the present time. Contact us through the sales or info mails under the Contact tab for more details.

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