An observation cabin is located in a hot-strip mill directly over the line, as shown in the
Question:
An observation cabin is located in a hot-strip mill directly over the line, as shown in the schematic. The cabin floor is exposed to a portion of the hot strip that is at a temperature of T ss = 920?C and has an emissivity of ? ss = 0.85, as well as to surroundings within the mill (not shown) at a temperature of Tsur = 80?C. To protect the operating personnel in the cabin, the floor must be maintained at T? = 50?C. Determine the coolant system heat removal rate required to maintain the cabin floor at 50?C for the following conditions:
(a) When the floor, with an emissivity of 8f = 0.6, is directly exposed to the strip; and
(b) When a radiation shield of emissivity 8, = 0.1 is installed between the floor and the strip.
Step by Step Answer:
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine