Advantages and disadvantages of Gas
turbine power plant
Advantages of Gas Turbine Power Plant
are small in size, weigh less and have low initial cost per unit output.
are easy to install within short periods.
are quick-starting and smooth running.
offer flexibility by supplying electricity for power generation as well as by
supplying compressed air for process needs.
are capable of using a range of liquid and gaseous fuels including synthetic
are subjected (put) to fewer environmental restrictions than other prime
consumption is less compared to steam power plant.
electric motor or an I.C. engine is necessary for starting the plant. The
starting motor must bring the compressor well towards the operating speed. So,
starting is not simple as in the case of other power plants.
turbine plants have less vibrations when compared with reciprocating engines of
the same speed. However the high frequency noise from the compressor is
temperatures impose severe restriction on the servicing conditions of the
efficiency is low since two-thirds of the total power output is used for
driving the compressor.
blades of the turbine require special cooling methods due to the severity of
operating temperatures and pressures. In practice, the temperatures at the
entry of the turbine are as high as 1100°C - 1260°C. Hence
they should be made of special metals and alloys.
are incompatible with solid fuels.