ompute the equilibrium altitude of a zero-pressure weather balloon (relative to standard atmosphere) if the payload mass is 15 kg, the maximum volume of the ballon is 800 m3 , and: (a) the lift gas is helium, RHe ≈ 2077.1 J/(kg K) (b) the lift gas is hydrogen, RH2 ≈ 4124.2 J/(kg K) (c) the lift gas is methane, RCH4 ≈ 51

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter5: Analysis Of Convection Heat Transfer
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Problem 5.5P: Evaluate the dimensionless groups hcD/k,UD/, and cp/k for water, n-butyl alcohol, mercury, hydrogen,...
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Compute the equilibrium altitude of a zero-pressure weather balloon (relative to standard atmosphere) if the payload mass is 15 kg, the maximum volume of the ballon is 800 m3 , and:

(a) the lift gas is helium, RHe ≈ 2077.1 J/(kg K)

(b) the lift gas is hydrogen, RH2 ≈ 4124.2 J/(kg K)

(c) the lift gas is methane, RCH4 ≈ 518.28 J/(kg K)

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