If you had an uninsulated air compressor which required Win = 400 kW to take air from a state at 80 kPa and 20 °C and change it to a state at 800 kPa and 200 °C, what would the Q be? Assume the air enters via a 10 cm diameter pipe at 20 m/s. (a) -171 kW (b)-198 kW (c) -233 kW (d) -263 kW

If you had an uninsulated air compressor which required Win = 400 kW to take air from a state at 80 kPa and 20 °C and change it to a state at 800 kPa and 200 °C, what would the Q be? Assume the air enters via a 10 cm diameter pipe at 20 m/s. (a) -171 kW (b)-198 kW (c) -233 kW (d) -263 kW

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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Concept explainers

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

If you had an uninsulated air compressor which required Win = 400 kW to take air from a state at 80 kPa
and 20 °C and change it to a state at 800 kPa and 200 °C, what would the Q be? Assume the air enters via
a 10 cm diameter pipe at 20 m/s.
(a) -171 kW
(b)-198 kW
(c) -233 kW
(d) -263 kW

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