A gas turbine power plant works between pressures of 1 kg/cm2 and 5 kg/cm2 and temperatures of 285°K and 1100°K. The intercooler cools the air at 2.3 kg/cm2 to 285°K before the air is sent to the second stage compressor. The compressed air from the second stage compressor passes through a regenerator, whose effectiveness is 0.72 and then through the combustion chamber. The heated air is then expanded in a high-pressure turbine to 2.3 kg/cm2 and is then reheated to 1100°K. The air is finally expanded in the low-pressure turbine to 1 kg/cm2. Assuming the compressor and turbine efficiencies to be 85%, determine: (i) the ratio of compression work to the turbine work, (ii) power developed for an air flow of 3.0 kg/sec, (iii) the thermal efficiency of the cycle, (iv) heat rejected per sec to the cooling water in the intercooler and (v) heat rejected per sec to the atmosphere. Assume that all the components are mounted on the same shaft. Represent process on T-S plane. Also assume
Cp = 0.24 kcal/kg and ratio of specific heats to be 1.4.