A balloon filled with helium at 20°C, 1 bar and a volume of 0.5 m³ is moving with a velocity of 15 m/s at anelevation of 0.5 km relative to an exergy reference environment for which To = 20°C, po = 1 bar. Using theideal gas model with k = 1.67, determine the specific exergy of the helium, in kJ.

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Engineering

Mechanical Engineering

a volume of 0.5 m² ence environment f pecific exergy of the

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Question

A balloon filled with helium at 20°C, 1 bar and a volume of 0.5 m³ is moving with a velocity of 15 m/s at an
elevation of 0.5 km relative to an exergy reference environment for which To = 20°C, po = 1 bar. Using the
ideal gas model with k = 1.67, determine the specific exergy of the helium, in kJ.

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