To confirm that a double-pane window is indeed better than a single-pane window, you ran some tests. A 1.5 mx3 m double-pane window as shown in the figure is used for a comparison of heat loss with an equivalent single-pane window. The window is placed in a test environment where the inside air temperature is 300 K and the outside air temperature is 270 K, as shown in the figure. The thermal conductivity of glass is approximated as 0.93 W/m-K and that of air is approximated as 0.029 W/m-K. Consider the air between the two panes of the double-pane window to be stagnant (not even natural convection is taking place). The convection coefficient on both sides (i.e., inside and outside) of the window is 15 W/m².K. What is the rate of heat transfer through the window? Neglect radiation. 339.8W 2.5 mm Inside 300 K glass 7.5 mm stagnant air glass .5 mm Double-pane Outside 270 K
To confirm that a double-pane window is indeed better than a single-pane window, you ran some tests. A 1.5 mx3 m double-pane window as shown in the figure is used for a comparison of heat loss with an equivalent single-pane window. The window is placed in a test environment where the inside air temperature is 300 K and the outside air temperature is 270 K, as shown in the figure. The thermal conductivity of glass is approximated as 0.93 W/m-K and that of air is approximated as 0.029 W/m-K. Consider the air between the two panes of the double-pane window to be stagnant (not even natural convection is taking place). The convection coefficient on both sides (i.e., inside and outside) of the window is 15 W/m².K. What is the rate of heat transfer through the window? Neglect radiation. 339.8W 2.5 mm Inside 300 K glass 7.5 mm stagnant air glass .5 mm Double-pane Outside 270 K
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.26P
Related questions
Question
![To confirm that a double-pane window is indeed better than a single-pane window, you ran some tests.
A 1.5 mx3 m double-pane window as shown in the figure is used for a comparison of heat loss with an
equivalent single-pane window. The window is placed in a test environment where the inside air temperature
is 300 K and the outside air temperature is 270 K, as shown in the figure. The thermal conductivity of glass
is approximated as 0.93 W/m-K and that of air is approximated as 0.029 W/m.K. Consider the air between
the two panes of the double-pane window to be stagnant (not even natural convection is taking place).
The convection coefficient on both sides (i.e., inside and outside) of the window is 15 W/m².K. What is the
rate of heat transfer through the window? Neglect radiation.
339.8W
2.5 mm
Inside
300 K
glass
7.5 mm
stagnant
air
glass
2.5 mm
Double-pane
Outside
270 K](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0091a6ea-98c6-400c-a3e1-6e593d8dbc9f%2F112879bb-14ca-4b29-b3ac-5a7c80964c94%2F4tsehhy_processed.png&w=3840&q=75)
Transcribed Image Text:To confirm that a double-pane window is indeed better than a single-pane window, you ran some tests.
A 1.5 mx3 m double-pane window as shown in the figure is used for a comparison of heat loss with an
equivalent single-pane window. The window is placed in a test environment where the inside air temperature
is 300 K and the outside air temperature is 270 K, as shown in the figure. The thermal conductivity of glass
is approximated as 0.93 W/m-K and that of air is approximated as 0.029 W/m.K. Consider the air between
the two panes of the double-pane window to be stagnant (not even natural convection is taking place).
The convection coefficient on both sides (i.e., inside and outside) of the window is 15 W/m².K. What is the
rate of heat transfer through the window? Neglect radiation.
339.8W
2.5 mm
Inside
300 K
glass
7.5 mm
stagnant
air
glass
2.5 mm
Double-pane
Outside
270 K
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 2 steps with 2 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
![Principles of Heat Transfer (Activate Learning wi…](https://www.bartleby.com/isbn_cover_images/9781305387102/9781305387102_smallCoverImage.gif)
Principles of Heat Transfer (Activate Learning wi…
Mechanical Engineering
ISBN:
9781305387102
Author:
Kreith, Frank; Manglik, Raj M.
Publisher:
Cengage Learning
![Principles of Heat Transfer (Activate Learning wi…](https://www.bartleby.com/isbn_cover_images/9781305387102/9781305387102_smallCoverImage.gif)
Principles of Heat Transfer (Activate Learning wi…
Mechanical Engineering
ISBN:
9781305387102
Author:
Kreith, Frank; Manglik, Raj M.
Publisher:
Cengage Learning