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Unformatted text preview: k-load power. Running costs are
relatively high. Plants of this type are currently found on fixed installations
in the North Sea.
Electricity generation in gas turbines also produces heat. Combined
cycle gas turbine stations and cogeneration plants (combined heat and
power) use this heat, making them considerably more efficient than simplecycle gas turbine units. In combined cycle power plants, steam turbines are
used to generate electricity from the waste heat given off by the gas
turbines. When used together, these turbines can give a net efficiency for
electricity generation of up to 60%. A cogeneration facility produces both
electricity and heat, for space heating for example. Surplus heat from
steam turbines or in gas turbine exhaust fumes is carried to a heat
distribution system. A cogeneration plant generates less electricity than a
combined cycle gas turbine plant for the same level of gas consumption.
However, it converts a larger proportion, over 80%, of the energy content of
the gas to usab...
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This document was uploaded on 03/30/2014.
- Summer '14