MAN Diesel & Turbo Powerships, Offshore Africa, The Middle East And The Mediterranean
A contract with the Turkish company Karadeniz Powership Co. Ltd. includes 21 MAN Diesel & Turbo 18V51/60DF dual-fuel engines and three 14V48/60 HFO engines. The total output is 400 MW. The large-bore diesel engines are to be installed onboard four powerships. The first of the three powerships went into service in May 2010.
The ships are former freighters, which are converted into floating diesel power plants. Thanks to their mobility, they can be connected to local power grids to temporarily cover demands whenever on-site power plants are insufficient or new power plants cannot be built quickly enough. Unlike power barges power plants on pontoons the “powerships” are equipped with their own propulsion engines and do not need to be towed.
They are planned for use in Africa, Pakistan and other regions in the Middle East and the Mediterranean. The units are ideal for the planned purpose. The engine’s fuel flexibility centers on the capability to operate on either gaseous or liquid fuel, and to switch between them seamlessly at full rated output. The powerships can make use of the local infrastructure be it an oil or gas supply. And that is not the only benefit the dual-fuel engines bring: a further advantage of dual-fuel engines is that when pow-ered by gas, in particular, they ensure low-emission and therefore ecologically friendly combustion.
The 51/60DF engine used for the actual powerships was first used on liquid gas tankers, on which evaporated gas from the cargo tanks can be used to power the engine. MAN Diesel & Turbo dual-fuel engines have been gaining in popularity in the power generation industry for some time, thanks to their efficiency, fuel flexibility and environmental benefits all factors that have enabled this relatively new engine to quickly establish itself on the market.
Karadeniz Powership Co. currently has three powerships in operation, one in Pakistan and two in Iraq. Powerships are fast-track, quickly deployed, utility-grade power plants meeting a country’s urgent demands of electricity. Powerships’ capacities range from 45 to 220 MW and provide midterm solutions for three to five years with direct connectivity to local grids from onboard high-voltage grid stations. Powerships provide faster transportation and greater access capabilities. Reciprocating dual-fuel engines are installed on powerships, creating ideal base load and flexible generation capacities. State-of-the-art waste-heat recovery systems allow for future flexibility to support desalination solutions.
The powerships provide power to countries aiming to avoid electricity shortages, increase time for decisionmakers to bridge generation gaps and choose the best long-term solution for their country. “Powerships are more economical than short-term solutions, suffering from shortage, operating existing old power plants. And they have an immediate impact on sustainable growth of the economy,” said the company. “Powerships have state-of-the-art technology with high quality and fast delivery, and have no completion or site risk.” Operation of powerships is ideal in areas with poor logistic infrastructure. They are unaffected by floods, landslides and earthquakes, and have minimal use of land space — a mobility advantage
for future use in other locations.
Source: Diesel and Gas Turbines Magazine