The replacement by Trent 60 wet low emissions (WLE) combustion engines would reduce consumption of gas and carbon-dioxide emissions by 45,000 tons per year and enhance the efficiency of the power station by 12% at the highest load.
The WLE combustion engines would be manufactured at the Rolls-Royce plant in Montreal, Quebec and the generating sets will be packed at the firm’s facility in Mount Vernon, Ohio. The existing infrastructure in the power plant, including transmission lines, electrical generators and boilers, would be incorporated with the new units that would speed up the repowering process.
RWE’s power-generating facility in Emsland includes a nuclear power plant, a natural-gas combined-cycle facility and a new natural-gas combined-cycle power plant that is presently under construction.
The two combined-cycle units with a power generation capacity of 420 megawatts (MW) each were commissioned during 1974-1975. The two plants, with a combined power generation capacity of 2,240 MW, account for 7% of the total installed power generation capacity of plants owned by RWE. The company is expected to commence an 876 MW combined-cycle station that is valued at $663 million, scheduled to commence its operations by the end of 2009.
RWE, during April 2009, intended to replace its 420-MW turbines with the four 58-MW Trent 60 combustion engines supplied by Rolls-Royce. This project is expected to start in November 2009, and end up by mid of 2011.
The dry low emissions (DLE) model of the Trent 60 engine under normal operating conditions would generate 52 MW of power, and under temperatures below 2 degrees Celsius (35.6 degrees Fahrenheit) would generate around 58 MW of power. At temperatures below 19 degree Celsius (66.2 degree Fahrenheit), the WLE model would generate 58 MW of power.
The Trent 60 can deliver up to 58 MW of electric power, equivalent to 85,830 horsepower of energy, at an efficiency of 42%. The Trent 60 engines are sold and reserved for oil and gas installations and power generation in 17 countries at 57 units. RWE npower, the nuclear power subsidiary of RWE, operates a 50-MW cogeneration power plant equipped with a Trent 60 engine.