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  GAS TURBINES IN MARINE PLANTS SUBMITTED BY GROUP 3 11-15)  METHODS of improvement of THERMAL EFFICIENCY and WORK RATIO of gas turbine plants ã WORK RATIO :-ratio of the net work output to the total work developed in the turbine. ã THERMAL EFFICIENCY :-it is the percentage of total energy input appearing as net work output of the cycle.   METHODS:   1. Intercooling   2. Reheating   3. Regeneration  1. INTERCOOLING The compressor utilizes the major percentage of power developed by the gas turbine. The work required by the compressor can be reduced by compressing the air in two stagesand incorporation a intercooler between the two.