A gas flows steadily through a rotary compressor at a temperature of 16 ⁰C, a pressure of 100 kPa, and an enthalpy of 392.2 kJkg-1. The gas leaves the compressor at a temperature of 245 ⁰C, a pressure of 0.6 MPa and an enthalpy of 534.5 kJkg-1. There is no heat transfer to or from the gas as it flows through the compressor. Using the steady flow equation appropriate to each case, evaluate the external work done per unit mass of gas: a) when the inlet and exit velocities of the gas are negligible b) when the inlet velocity of the gas is 80 ms-1 and the exit velocity of the gas is 160 ms-1.
A gas flows steadily through a rotary compressor at a temperature of 16 ⁰C, a pressure of 100 kPa, and an enthalpy of 392.2 kJkg-1. The gas leaves the compressor at a temperature of 245 ⁰C, a pressure of 0.6 MPa and an enthalpy of 534.5 kJkg-1. There is no heat transfer to or from the gas as it flows through the compressor. Using the steady flow equation appropriate to each case, evaluate the external work done per unit mass of gas: a) when the inlet and exit velocities of the gas are negligible b) when the inlet velocity of the gas is 80 ms-1 and the exit velocity of the gas is 160 ms-1.
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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A gas flows steadily through a rotary compressor at a temperature of 16 ⁰C, a pressure of 100
kPa, and an enthalpy of 392.2 kJkg-1. The gas leaves the compressor at a temperature of 245
⁰C, a pressure of 0.6 MPa and an enthalpy of 534.5 kJkg-1. There is no heat transfer to or from
the gas as it flows through the compressor. Using the steady flow equation appropriate to
each case, evaluate the external work done per unit mass of gas:
a) when the inlet and exit velocities of the gas are negligible
b) when the inlet velocity of the gas is 80 ms-1 and the exit velocity of the gas is 160 ms-1.
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