4 Air is compressed steadily by a 10 kW compressor from 100 kPa and 15°C to 600 kPa and 170°C at a rate of 3 kg/min (see Figure 1.12). Neglecting changes in kinetic and potential energies, determine (a) the increase in the exergy of the air, and (b) the rate of exergy destruction during this process. Assume the surround- ings to be at 15°C.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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1 Thermodynamic Fundamentals
29
Air is compressed steadily by a 10 kW compressor from 100 kPa and 15°C to
600 kPa and 170°C at a rate of 3 kg/min (see Figure 1.12). Neglecting changes in
kinetic and potential energies, determine (a) the increase in the exergy of the air,
and (b) the rate of exergy destruction during this process. Assume the surround-
ings to be at 15°C.
14
Figure 1.12 Schematic of an air compressor.
Air
600 kPa
170°C
10 kW
Air
Compressor
Air
100 kPa
Transcribed Image Text:1 Thermodynamic Fundamentals 29 Air is compressed steadily by a 10 kW compressor from 100 kPa and 15°C to 600 kPa and 170°C at a rate of 3 kg/min (see Figure 1.12). Neglecting changes in kinetic and potential energies, determine (a) the increase in the exergy of the air, and (b) the rate of exergy destruction during this process. Assume the surround- ings to be at 15°C. 14 Figure 1.12 Schematic of an air compressor. Air 600 kPa 170°C 10 kW Air Compressor Air 100 kPa
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