Cleanergy CHP Engines
Cleanergy produces and markets CHP (combined heat and power) engines based on Stirling technology for biogas, landfill gas and natural gas use. The engines are fully CE-certified.
Enjoying long service intervals and life length
By using Stirling technology for power production from combustion of gas, the Cleanergy CHP engine enables separation of the moving parts, such as the pistons, piston seals, cylinders and corresponding oil lubrication from contaminants in the fuel gas and the air. Further, the same essential parts are protected from strains caused by the combustion itself; quick temperature changes, uneven temperature distributions in the material, unwanted soot and particles fixing onto sensitive surfaces. In comparison with piston engines of Otto or Diesel principle that have to accept these problems, the Cleanergy CHP engine thus offers outstanding long service intervals and technical life length thanks to the avoidance of these problems.
Optimized combustion and low emissions
A second advantage of using the Stirling principle in a CHP gas engine is that the design of the combustion chamber can be optimized in terms of fuel efficiency and emission reduction. Cleanergy´s CHP engines utilize preheating of air and flameless oxidation (FLOX™) to re-circulate a large portion of the exhaust gas in the combustion chamber. This slows down and evens out the combustion reaction over the entire combustion chamber causing small emissions of CO and NOx and ensuring a very effective use of the fuel gas. The emissions are often as low as 10% of the emission levels of a comparable internal combustion engine. Apart from being generally environmentally friendly, these small emissions also make the engine well adapted for use in or close to domestic buildings.
Full technical data available at Installation Specification
Short facts Cleanergy CHP engine
Electrical power output: 2- 9 kW
Thermal power output: 8-25 kW
Electrical efficiency: 22- 24,5 %
Total efficiency: >90%
Gas consumption: 2,9 Nm3/ h pure methane at 80% engine load
Noise level: 67 dB
Emissions: CO: 50 mg/m3; NOx: 80 mg/m3
Service interval: 4000- 6000 h
Technical life length: 25 years