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In a combined cycle natural gas-fired gas turbine power plant, the inlet temperature of a gas turbine is 815.56°C. It has a pressure ratio of 6:1. The exhaust gas leaves the gas turbine at 535°C. For the exhaust gas, the constant pressure specific heat is 0.26 kcal/kg-K and the constant volume specific heat is 0.2 kcal/kg-K. What is the turbine efficiency in percent? 

          In a combined cycle natural gas-fired gas turbine power plant, the inlet temperature of a gas turbine is 815.56°C. It has a pressure ratio of 6:1. The exhaust gas leaves the gas turbine at 535°C. For the exhaust gas, the constant pressure specific heat is 0.26 kcal/kg-K and the constant volume specific heat is 0.2 kcal/kg-K. What is the turbine efficiency in percent?
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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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In a combined cycle natural gas-fired gas turbine power plant, the inlet temperature of a gas turbine is 815.56°C. It has a pressure ratio of 6:1. The exhaust gas leaves the gas turbine at 535°C. For the exhaust gas, the constant pressure specific heat is 0.26 kcal/kg-K and the constant volume specific heat is 0.2 kcal/kg-K. What is the turbine efficiency in percent?
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Transcript

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00:01 Pressure ratio it is equal to 6 by 1 then inlet temperature of air t1 is 300 kelvin maximum cycle temperature t3 is 1000 kelvin then ensotropic efficiency of compressor which is nc is 0 .84 then encentropic efficiency of turbine stages here it is and t0 .9 air mass flow rate m is 600 kg per minute specific heat at constant pressure cp is 1 .02 kilojoule per kg kelvin rate of specific heat y is 1 .36 now here we see that we will assume the air standard brayton cycle the cycle consists of total four processes the first process is encentropic compression means the process 1 to 2 then the…
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