A spherical shell satellite (3-m-OD, 1.25-cm-wall thickness, made of stainless steel) reenters the atmosphere from outer space.

Question:

A spherical shell satellite (3-m-OD, 1.25-cm-wall thickness, made of stainless steel) reenters the atmosphere from outer space. If its original temperature is 38?C, the effective average temperature of the atmosphere is 1093?C, and the effective heat transfer coefficient is 115 W/(m2 ?C), estimate the temperature of the shell after reentry, assuming the time of reentry is 10 min and the interior of the shell is evacuated.GIVENA spherical stainless steel satellite reentering the atmosphereOutside diameter (D) = 3 mWall thickness (L) = 1.25 cm = 0.0125 mIts original temperature (To) = 38?CThe effective temperature of the atmosphere (T??) = 1093?CThe effective heat transfer coefficient hc = 115 W/(m2 ?C)The time of reentry (tr) = 10 min = 600 sThe interior of the shell is evacuatedASSUMPTIONSExterior heat transfer is uniform over the shellAssume radiation heat transfer is allowed for in the heat transfercoefficient

image
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Principles of heat transfer

ISBN: 978-0495667704

7th Edition

Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn

Question Posted: