Open cycle gas turbine:
-Working on Joule cycle or Brayton cycle
-Air is compressed in a rotary compressor and passed into a combustion chamber where fuel is burnt, the products of combustion are made to impinge over rings of turbine blades with high velocity and work is produced. After the work done by the combustion products, rest are given to the atmosphere.
-60% of work produced is used to drive the compressor and rest is available as useful power
-For starting purpose, it is first motored to minimum speed, called coming in speed, before the fuel is turned on
-About 5% power output by the motor is used to start the turbine
To improve the turbine performance intercooler, heat exchanger and reheat cycles are used with simple gas turbine cycle.
-Working on Joule cycle or Brayton cycle
-Air is compressed in a rotary compressor and passed into a combustion chamber where fuel is burnt, the products of combustion are made to impinge over rings of turbine blades with high velocity and work is produced. After the work done by the combustion products, rest are given to the atmosphere.
-60% of work produced is used to drive the compressor and rest is available as useful power
-For starting purpose, it is first motored to minimum speed, called coming in speed, before the fuel is turned on
-About 5% power output by the motor is used to start the turbine
To improve the turbine performance intercooler, heat exchanger and reheat cycles are used with simple gas turbine cycle.
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