Engineering, 07.04.2020 19:25 jackieeecx3
Dry atmospheric air enters an adiabatic compressor at a 20C, 1 atm and a mass flow rate of 0.3 kg/s. The air is compressed to 1 MPa. The exhaust temperature of the air is 70 degrees hotter compared to the exhaust of an isentropic compression. Determine, a. The exhaust temperature of the air (C) b. The volumetric flow rate (L/s) at the inlet and exhaust of the compressor c. The power required to accomplish the compression (kW) d. The isentropic efficiency of the compressor e. An accounting of the exergy entering the compressor (complete Table P3.9) assuming that the dead state is the same as State 1 (dry atmospheric air) f. The exergetic efficiency of the compressor
Answers: 1
Engineering, 04.07.2019 18:10
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:10
The higher the astm grain size number, the finer the gran is. a)-true b)-false
Answers: 2
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
Engineering, 04.07.2019 18:20
Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.
Answers: 2
Dry atmospheric air enters an adiabatic compressor at a 20C, 1 atm and a mass flow rate of 0.3 kg/s...
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