A furnace is located next to a dense array of cryogenic fluid piping. The ice-covered piping approximates
Question:
A furnace is located next to a dense array of cryogenic fluid piping. The ice-covered piping approximates a plane surface with an average temperature of Tp = 0?C and an emissivity of ?p = 0.6. The furnace wall has a temperature of T? = 200?C and an emissivity of ?? = 0.9. To protect the refrigeration equipment and piping from excessive heat loading, reflective aluminum radiation shielding with an emissivity of ?s = 0.1 is placed between the piping and the furnace wall, as shown in the schematic. Assume all surfaces are diffuse-gray. If the temperature of the shield closest to the piping Ts, N must be less than 30?C, how many radiation shields, N, must be installed between the piping and the furnace wall?
Step by Step Answer:
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine