TDL 60 LFG

This again was a further development of the basic TDL 60 engine, and the prime purpose was to burn low quality Landfill Gas in the range of 30% to 12% Methane. This required the development of a special burner (as seen in the photographs) and following over two years development and field trials worked extremely well in burning down to 12% Methane with no pilot fuel. Combustion was very stable and with exceptionally good emissions.

In conjunction with this a small turbine driven centrifugal compressor was used to take the LFG from the gas collection manifold and compress it to around 1.8 bar (g) for combustion.

This containerised package was offered as an alternative to venting this low quality gas, which in many cases was of to low a quality to flare off. However, we did not have the financial resource to add a generator to this engine, which would have then made a much more marketable product.

The left hand photograph shows the containerised engine on a landfill site during testing. The right hand photograph shows part of the burner with gas control valve over it, and the engine with the gas compressor above it. Propane is used for starting and then the fuel is automatically switched to LFG only once up and running.