gasturbines problems
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An ideal gas turbine (Brayton cycle) has a net power output of 100 kW. The working medium is air with T1=30°C, T3 = 750°C, and T4 = 300 °C. Determine
(A) The compressor pressure ratio,
(b) The compressor work (kj/kg),
(c) The mass flow rate of air (kg/s)
(d) The thermal efficiency.
Solution:
a)
b)
c)
d)
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A gas turbine power plant operates with maximum temperature of 1500⁰C,
while the ambient air temperature is 28⁰C. If specific heat ratio is 1.4 and pressure ratio is 15, find the following:
Turbine work Compressor work Power plant net output work Heat input Thermal efficiency
A gas turbine power plant with a pressure ratio of 20:1 consumes 6.2 kg/s of 48MJ/kg methane. If specific heat ratio is 1.5 calculate the output power of this plant.