Heat Loss with a Trial-and-Error Solution. The exhaust duct from a heater has an inside diameter of 114.3 mm with ceramic walls 6.4 mm thick. The average k 1.52 W/m K. Outside this wall, installed. The thermal conductivity of the rock wool is k = 0.046 + 1.56 x 10 T°C (W/m K). The inside surface temperature of the ceramic is Ti 588.7 K, and the outside surface temperature of the insulation is T 311 K. Calculate the heat loss for 1.5 m of duct and the interface temperature T2 between the ceramic and the insu- lation. [Hint: The correct value of km for the insulation is that evaluated at the mean temperature of (T2+ T3)/2. Hence, for the first trial assume a mean temperature of, say, 448 K. Then, calculate the heat loss and T2. Using this new T2, calculate a new mean temperature and proceed as before.] an insulation of rock wool 102 mm thick is ds MIsenitysM WTOBTHMAA hOS SUTD clveT al Jolysl sbi hesnigne lsaibemola SOC 19 9T01a d di 199nigne loime. dhe GA 9120x
Heat Loss with a Trial-and-Error Solution. The exhaust duct from a heater has an inside diameter of 114.3 mm with ceramic walls 6.4 mm thick. The average k 1.52 W/m K. Outside this wall, installed. The thermal conductivity of the rock wool is k = 0.046 + 1.56 x 10 T°C (W/m K). The inside surface temperature of the ceramic is Ti 588.7 K, and the outside surface temperature of the insulation is T 311 K. Calculate the heat loss for 1.5 m of duct and the interface temperature T2 between the ceramic and the insu- lation. [Hint: The correct value of km for the insulation is that evaluated at the mean temperature of (T2+ T3)/2. Hence, for the first trial assume a mean temperature of, say, 448 K. Then, calculate the heat loss and T2. Using this new T2, calculate a new mean temperature and proceed as before.] an insulation of rock wool 102 mm thick is ds MIsenitysM WTOBTHMAA hOS SUTD clveT al Jolysl sbi hesnigne lsaibemola SOC 19 9T01a d di 199nigne loime. dhe GA 9120x
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
Related questions
Question
100%
![Heat Loss with a Trial-and-Error Solution. The exhaust duct from a heater has an
inside diameter of 114.3 mm with ceramic walls 6.4 mm thick. The average
k 1.52 W/m K. Outside this wall,
installed. The thermal conductivity of the rock wool is k = 0.046 + 1.56 x 10 T°C
(W/m K). The inside surface temperature of the ceramic is Ti 588.7 K, and the
outside surface temperature of the insulation is T 311 K. Calculate the heat loss
for 1.5 m of duct and the interface temperature T2 between the ceramic and the insu-
lation. [Hint: The correct value of km for the insulation is that evaluated at the mean
temperature of (T2+ T3)/2. Hence, for the first trial assume a mean temperature of,
say, 448 K. Then, calculate the heat loss and T2. Using this new T2, calculate a new
mean temperature and proceed as before.]
an insulation of rock wool 102 mm thick is
ds
MIsenitysM
WTOBTHMAA
hOS
SUTD
clveT al
Jolysl
sbi
hesnigne lsaibemola
SOC
19
9T01a
d di
199nigne loime. dhe
GA
9120x](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F65a54057-de91-4407-81dc-84071bb6029d%2Fbf13e2be-fa45-4712-87f9-47ea62060be7%2Fsnaewzk.jpeg&w=3840&q=75)
Transcribed Image Text:Heat Loss with a Trial-and-Error Solution. The exhaust duct from a heater has an
inside diameter of 114.3 mm with ceramic walls 6.4 mm thick. The average
k 1.52 W/m K. Outside this wall,
installed. The thermal conductivity of the rock wool is k = 0.046 + 1.56 x 10 T°C
(W/m K). The inside surface temperature of the ceramic is Ti 588.7 K, and the
outside surface temperature of the insulation is T 311 K. Calculate the heat loss
for 1.5 m of duct and the interface temperature T2 between the ceramic and the insu-
lation. [Hint: The correct value of km for the insulation is that evaluated at the mean
temperature of (T2+ T3)/2. Hence, for the first trial assume a mean temperature of,
say, 448 K. Then, calculate the heat loss and T2. Using this new T2, calculate a new
mean temperature and proceed as before.]
an insulation of rock wool 102 mm thick is
ds
MIsenitysM
WTOBTHMAA
hOS
SUTD
clveT al
Jolysl
sbi
hesnigne lsaibemola
SOC
19
9T01a
d di
199nigne loime. dhe
GA
9120x
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 7 steps with 6 images
Recommended textbooks for you
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY