Determine the final pressure using approximate analysis
Air is compressed isentropically from an initial state of 300 K and 101 kPa to a final temperature of 1000 K. Determine the final pressure using a) approximate analysis (using properties at the average temperature) and b) exact analysis.
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Airplane takeoff from an aircraft carrier is assisted by a steam-driven piston/cylinder with an average pressure of 1250 kPa. A 17500-kg airplane should accelerate from zero to 30 m/s, with 30% of the energy coming from the steam piston.
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Determine the final pressure using a) approximate analysis (using properties at the average temperature) and b) exact analysis.
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Assuming that the compression process is isentropic and the mass flow rate is 0.15 kg/s determine the amount of power saved versus the use of a single compressor. Assume constant properties at 300 K.
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