The British energy company, Blue-NG, has placed an order for a series of MAN B&W type 10L35MC-S diesel engines run on bio-liquids. The first four engines will be installed at sites in Beckton and Southall, Greater London, and are intended to supply green, low-CO2 power to the capital by 2010.
The two-stroke, low-speed engines will be built by MAN Diesel’s Polish licensee, H. Cegielski – Poznan S.A. Each engine develops 6,450 kW and has an ISO 3046 efficiency of 48.9 %.This high thermal efficiency is one of the main reasons for Blue-NG choosing MAN Diesel power. The MAN B&W engines’ performance is unrivalled in the 6MW diesel-power segment where normal efficiencies are usually in the range of 42-47 %.
The innovative plant, known as CHiP (Combined Heat and intelligent Power) will be the first of its kind in the world. The engines’ hightemperature waste heat will drive an organic Rankine cycle (ORC) turbine, while low-temperature waste heat will be used in a natural-gas, pressure reduction station where the heat will drive turbo expanders. The plant’s total net electrical efficiency will therefore peak at above 80 %.
The client, Blue-NG, is a joint venture between the National Grid, the UK’s gas and power-distribution company, and 2OC Ltd., a company well known in geothermal energy and natural-gas pressure-reduction station projects. The first MAN B&W 10L35MC-S engine is due for ex-works delivery in December 2009, with the remaining engines due to follow thereafter at three-month intervals.