Question 1 A furnace wall consisting of 0.20 m of fire clay brick. 0.15 m of kaolin, and a 0.05-m outer layer of masonry brick is exposed to furnace gas at 1250 K with air at 298 K adjacent to the outside wall. The inside and outside convective heat transfer coefficients are 55 and 10 W/m² K, respectively. 1.1. Determine the heat loss per square meter of wall and the temperature of the outside wall surface under these conditions. 1.2. Assuming that the outside of temperature of the masonry brick in question 1.1 may not exceed 350K; find the adjusted thickness of kaolin to maintain the same heat flux requirements.
Question 1 A furnace wall consisting of 0.20 m of fire clay brick. 0.15 m of kaolin, and a 0.05-m outer layer of masonry brick is exposed to furnace gas at 1250 K with air at 298 K adjacent to the outside wall. The inside and outside convective heat transfer coefficients are 55 and 10 W/m² K, respectively. 1.1. Determine the heat loss per square meter of wall and the temperature of the outside wall surface under these conditions. 1.2. Assuming that the outside of temperature of the masonry brick in question 1.1 may not exceed 350K; find the adjusted thickness of kaolin to maintain the same heat flux requirements.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Question 1
A furnace wall consisting of 0.20 m of fire clay brick. 0.15 m of kaolin, and a 0.05-m
outer layer of masonry brick is exposed to furnace gas at 1250 K with air at 298 K
adjacent to the outside wall. The inside and outside convective heat transfer
coefficients are 55 and 10 W/m² K, respectively.
1.1. Determine the heat loss per square meter of wall and the temperature of the
outside wall surface under these conditions.
1.2. Assuming that the outside of temperature of the masonry brick in question 1.1
may not exceed 350K; find the adjusted thickness of kaolin to maintain the
same heat flux requirements.
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