Engineering, 27.11.2019 23:31 grey00
Agas-turbine cycle with two stages of compression (intercooling) and two stages of expansion (reheat) is considered. the inlet air to the first compression stage is at 300 k. the compression efficiency in each stage is 0.8 and expansion efficiency in each stage is 0.85. the compression and expansion ratio in each stage is 3. the air is cooled to its initial temperature after the first compression and is reheated to the maximum temperature after the first expansion. the air is at the temperature of 1200 k leaving the combustor. consider one case without a regenerator and a case with a regenerator with effectiveness of 0.75.a) show the t-s diagram of the cycle. b) determine the back work ratio with and without generator. c) determine the thermal efficiency of the cycle with and without the generator.
Answers: 3
Engineering, 04.07.2019 18:10
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
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Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
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Engineering, 04.07.2019 18:10
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
Answers: 1
Agas-turbine cycle with two stages of compression (intercooling) and two stages of expansion (reheat...
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