Engineering, 21.11.2019 06:31 abbz13
The 7fa gas turbine manufactured by general electric is reported to have an efficiency of 35.9 percent in the simplecycle mode and to produce 159 mw of net power. the pressure ratio is 14,7 and the turbine inlet temperature is 1288 0c. the mass flow rate through the turbine is 1,536,000 kg/h. taking the ambient conditions to be 300c and 100 kpa, determine the isentropic efficiencies of the turbine and the compressor. also, determine the thermal efficiency of this gas turbine if a regenerator with an effectiveness of 65 percent is added.
Answers: 3
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
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
Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.
Answers: 1
Engineering, 04.07.2019 19:10
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
The 7fa gas turbine manufactured by general electric is reported to have an efficiency of 35.9 perce...
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