A piston-cylinder assembly contains 20 kg of ammonia, initially at 80 kPa and -10°C. The ammonia is compressed to a pressure of 550 kPa. During the process, the pressure and specific volume are related by pp¹¹ = constant. Determine the work and the heat transfer, in kJ.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A piston-cylinder assembly contains 20 kg of ammonia, initially at 80 kPa and -10°C. The ammonia is compressed to a pressure of 550
kPa. During the process, the pressure and specific volume are related by po¹¹ = constant. Determine the work and the heat transfer,
in kJ.
Determine work
Work can be evaluated:
as equal to the pressure times (final specific volume minus initial specific volume).
O by integrating volume from the initial pressure to the final pressure.
O as equal to the pressure times (initial volume minus final volume).
as the integral of pdV from the initial volume to the final volume.
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Determine specific internal energy
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Calculate heat transfer
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Calculate work
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Calculate heat transfer
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Transcribed Image Text:A piston-cylinder assembly contains 20 kg of ammonia, initially at 80 kPa and -10°C. The ammonia is compressed to a pressure of 550 kPa. During the process, the pressure and specific volume are related by po¹¹ = constant. Determine the work and the heat transfer, in kJ. Determine work Work can be evaluated: as equal to the pressure times (final specific volume minus initial specific volume). O by integrating volume from the initial pressure to the final pressure. O as equal to the pressure times (initial volume minus final volume). as the integral of pdV from the initial volume to the final volume. eTextbook and Media Save for Later Assistance Used Attempts: 0 of 5 used Determine specific internal energy The parts of this question must be completed in order. This part will be available when you complete the part above. Calculate heat transfer The parts of this question must be completed in order. This part will be available when you complete the part above. Calculate work The parts of this question must be completed in order. This part will be available when you complete the part above. Calculate heat transfer The parts of this question must be completed in order. This part will be available when you complete the part above. Submit Answer
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