The diagram below illustrates a simplified version of the Jet Propulsion Laboratory's 25-ft space simulator chamber. Within it, tests are run for deep space probes and their components. In this particular experiment, a sensor assembly with its housing is placed inside. The sensor-housing electronics create heat such that q=3181.0 W exits the assembly's top surface into the chamber. The chamber itself is under vacuum, and its walls are at cryogenic temperatures to simulate conditions in space. Surfaces 1 and 2 are flat. Assume they are flush. The top surface of the chamber, Surface 4, can be approximated as a perfectly insulated, flat ceiling. The exposed surface of the floor, Surface 2, is a black, donut- shaped surface. Additional surface information can be seen below, including various parameters and dimensions. Assume all surfaces are opaque and diffuse, and conditions are at steady-state. PARAMETERS & DIMENSIONS Surface 1: A₂ = 7.07 m²; diameter d; = 3 m; Surface 2: A₂=45.74 m²; black surface, &₂ = 1; Surface 3: As = 669.8 m²; diameter ds = 8.2 m; Surface 4: A₁ = 52.8 m²; diameter d = 8.2 m; di-ds 7 35 di &=0.5; q=3181.0 W 7₂ = 100 K L=26m; &=0.9 T=90 K E=0.1; perfectly insulated

The diagram below illustrates a simplified version of the Jet Propulsion Laboratory's 25-ft space simulator chamber. Within it, tests are run for deep space probes and their components. In this particular experiment, a sensor assembly with its housing is placed inside. The sensor-housing electronics create heat such that q=3181.0 W exits the assembly's top surface into the chamber. The chamber itself is under vacuum, and its walls are at cryogenic temperatures to simulate conditions in space. Surfaces 1 and 2 are flat. Assume they are flush. The top surface of the chamber, Surface 4, can be approximated as a perfectly insulated, flat ceiling. The exposed surface of the floor, Surface 2, is a black, donut- shaped surface. Additional surface information can be seen below, including various parameters and dimensions. Assume all surfaces are opaque and diffuse, and conditions are at steady-state. PARAMETERS & DIMENSIONS Surface 1: A₂ = 7.07 m²; diameter d; = 3 m; Surface 2: A₂=45.74 m²; black surface, &₂ = 1; Surface 3: As = 669.8 m²; diameter ds = 8.2 m; Surface 4: A₁ = 52.8 m²; diameter d = 8.2 m; di-ds 7 35 di &=0.5; q=3181.0 W 7₂ = 100 K L=26m; &=0.9 T=90 K E=0.1; perfectly insulated

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

Section: Chapter Questions

Problem 5.51P

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