21 2.2 2.3 24 2.5 A two-stage, single-acting air compressor with a polytropic index of 1.35 runs in an atmosphere with free air conditions at 87 kPa and 20 °C. It has a FAD of 4 m³/min with a delivery pressure of 1 MPa. Induction occurs at 80 kPa and 30 °C. The mechanical and motor-drive efficiencies are 80% and 90% respectively. Assume complete inter-cooling and neglect clearance volumes. Draw a P-V-diagram to illustrate the operation of the two-stage compressor and assign relevant numbers. Mention 2 consequences of imposing Perfect Intercooling as a pre-requisite condition in multistage compression. Calculate: The intermediate pressure, The temperature of the air at entrance to the intercooler, The rate of heat rejected in the intercooler (kW), The input power from an electric motor.

21 2.2 2.3 24 2.5 A two-stage, single-acting air compressor with a polytropic index of 1.35 runs in an atmosphere with free air conditions at 87 kPa and 20 °C. It has a FAD of 4 m³/min with a delivery pressure of 1 MPa. Induction occurs at 80 kPa and 30 °C. The mechanical and motor-drive efficiencies are 80% and 90% respectively. Assume complete inter-cooling and neglect clearance volumes. Draw a P-V-diagram to illustrate the operation of the two-stage compressor and assign relevant numbers. Mention 2 consequences of imposing Perfect Intercooling as a pre-requisite condition in multistage compression. Calculate: The intermediate pressure, The temperature of the air at entrance to the intercooler, The rate of heat rejected in the intercooler (kW), The input power from an electric motor.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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