A spherical instrumentation device with a diameter of 102.16 mm has an emissivity of 0.32. It is contained in a large space simulation chamber whose temperature is preserved at 64.1 K. If its daily operation is restricted to the temperature range 50.6

A spherical instrumentation device with a diameter of 102.16 mm has an emissivity of 0.32. It is contained in a large space simulation chamber whose temperature is preserved at 64.1 K. If its daily operation is restricted to the temperature range 50.6

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.32P: A long wire 0.7 mm in diameter with an emissivity of 0.9 is placed in a large quiescent air space at...

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Question

A spherical instrumentation device with a diameter of 102.16 mm has an emissivity of 0.32. It is
contained in a large space simulation chamber whose temperature is preserved at 64.1 K. If its
daily operation is restricted to the temperature range 50.6 <t<75.2 deg C, calculate the
maximum power dissipation of the device in W.

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