module 2.docx - Module 2 1 Describe the joules Experiment 2 State First law of thermodynamics applied to open system and derive SFEE Equation 3 Air

module 2.docx - Module 2 1 Describe the joules Experiment 2...

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Module 2 1. Describe the joule’s Experiment. 2. State First law of thermodynamics applied to open system and derive SFEE Equation. 3. Air flows at the rate of 0.5 kg/s through an air compressor, entering at 7 m/s velocity, 100 Kpa pressure and 0.95 m 3 / kg volume and leaving at 5 m/s velocity, 100 Kpa pressure and 0.95 m 3 / kg volume and leaving at 5 m/s , 700KPa and 0.19m 3 /Kg. The internal energy of the air leaving is 90KJ/Kg greater than that of the air entering. Cooling water in the compressor jackets absorbs heat from the air at the rate of 58 KW. (i) Compute the rate of shaft work input to the air in KW and (ii) Find the ratio of the rate of shaft work input to the air in KW and (ii) Find the ratio of the inlet pipe diameter to outlet pipe diameter. 4. 11. in an isentropic flow process air flows at the rate of 600 kg/hr. At inlet to the nozzle, pressure is 2 MPa and temperature 127 0 C. the exit pressure is 0.5 Mpa. Initial air velocity is 300m/s. (i) determines exit velocity of air and (ii) inlet and exit area of nozzle 5. Derive expression for heat transfer and work transfer for a polytrophic process.
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