PpTek has conducted significant research into establishing the payback an operator can expect following the installation of the BioGas AK system on a typical landfill or sewage site.
Costs involved with operating a landfill or sewage gas to energy generating unit have been established with several UK operators. We have not outlined specific costs of running engines in this document but highlight below, typical components and expenses associated with running engines on dirty gas.
Due to variable costs of materials, labour and revenue from generation the values may differ somewhat, however the payback as a ratio of cost should be consistent within a few percent with all operators.
PpTek can assist in establishing actual cost savings associated with running an engine on
untreated and clean gas. Please contact PpTek (details)
The primary areas for deposits of silicon are the combustion and exhaust surfaces. As the deposits accumulate a hard crust is formed with tiny pinnacles. These create hotspots in the combustion chambers providing a constant source of ignition, causing pre-ignition and detonation. As a result the engine will perform inefficiently permitting increasing quantities of unburned fuel into the exhaust gas stream.
The engine becomes increasingly unstable and exhaust emissions increase, requiring the engine to be de-rated. As the deposits thicken pre-ignition can cause pitting in the cylinder head, pistons and valves. In extreme cases particles of deposits break off blocking open exhaust valves resulting in valve torching and the engine to become inoperable. All of the damage is occurring well ahead of any scheduled maintenance, adding both component and labour costs to running expenses.
