8.) A 50-m-long section of a steam pipe whose outer diameter is 10 cm passes through an open space at 15°C. The average temperature of the outer surface of the pipe is measured to be 150°C. If the combined heat transfer coefficient on the outer surface of the pipe is 20 W/m2-°C, determine (a) the rate of heat loss from the steam pipe, T =15°C
8.) A 50-m-long section of a steam pipe whose outer diameter is 10 cm passes through an open space at 15°C. The average temperature of the outer surface of the pipe is measured to be 150°C. If the combined heat transfer coefficient on the outer surface of the pipe is 20 W/m2-°C, determine (a) the rate of heat loss from the steam pipe, T =15°C
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
I need complete solutions And 4 decimal places in all solutions
![8.) A 50-m-long section of a steam pipe whose outer diameter is 10 cm
passes through an open space at 15°C. The average temperature of the
outer surface of the pipe is measured to be 150°C. If the combined heat
transfer coefficient on the outer surface of the pipe is 20 W/m2-°C,
determine
(a) the rate of heat loss from the
steam pipe,
(b) the annual cost of this energy
lost if steam is generated in a
natural gas furnace that has an
efficiency of 75 percent and the
price of natural gas is $
0.52/therm (1 therm = 105,500
kJ), and
(c) the thickness of fiberglass
insulation (k = 0.035 W/m-°C)
needed in order to save 90
T = 15°C
air
150°C
Steam
50 m
percent of the heat lost. Assume
the pipe temperature to remain
Fiberglass
insulation
constant at 150°C.
Figure 5 Problem 8](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8d43661d-9554-42bc-b6e2-efe6a76a36e2%2Fc595e06d-c7ca-4a93-b153-2f19558cb170%2Ftuiuue5_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8.) A 50-m-long section of a steam pipe whose outer diameter is 10 cm
passes through an open space at 15°C. The average temperature of the
outer surface of the pipe is measured to be 150°C. If the combined heat
transfer coefficient on the outer surface of the pipe is 20 W/m2-°C,
determine
(a) the rate of heat loss from the
steam pipe,
(b) the annual cost of this energy
lost if steam is generated in a
natural gas furnace that has an
efficiency of 75 percent and the
price of natural gas is $
0.52/therm (1 therm = 105,500
kJ), and
(c) the thickness of fiberglass
insulation (k = 0.035 W/m-°C)
needed in order to save 90
T = 15°C
air
150°C
Steam
50 m
percent of the heat lost. Assume
the pipe temperature to remain
Fiberglass
insulation
constant at 150°C.
Figure 5 Problem 8
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
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 6 steps with 4 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Elements Of Electromagnetics](https://www.bartleby.com/isbn_cover_images/9780190698614/9780190698614_smallCoverImage.gif)
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
![Mechanics of Materials (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134319650/9780134319650_smallCoverImage.gif)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Thermodynamics: An Engineering Approach](https://www.bartleby.com/isbn_cover_images/9781259822674/9781259822674_smallCoverImage.gif)
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
![Elements Of Electromagnetics](https://www.bartleby.com/isbn_cover_images/9780190698614/9780190698614_smallCoverImage.gif)
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
![Mechanics of Materials (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134319650/9780134319650_smallCoverImage.gif)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Thermodynamics: An Engineering Approach](https://www.bartleby.com/isbn_cover_images/9781259822674/9781259822674_smallCoverImage.gif)
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
![Control Systems Engineering](https://www.bartleby.com/isbn_cover_images/9781118170519/9781118170519_smallCoverImage.gif)
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
![Mechanics of Materials (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781337093347/9781337093347_smallCoverImage.gif)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
![Engineering Mechanics: Statics](https://www.bartleby.com/isbn_cover_images/9781118807330/9781118807330_smallCoverImage.gif)
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY