Explanation Given data: Resistance of inside attic film, R 1 = 0.68 h ⋅ ft 2 ⋅ °F Btu Resistance of insulation batt, R 2 = 19 h ⋅ ft 2 ⋅ °F Btu Resistance of gypsum wallboard, R 3 = 0.45 h ⋅ ft 2 ⋅ °F Btu Resistance of inside film, R 4 = 0.68 h ⋅ ft 2 ⋅ °F Btu Inside room temperature, T inside = 70 °F Outside air temperature, T outside = 15 °F Surface area of the ceiling, A = 1000 ft 2 Formula used: The formula for the heat loss through the ceiling, q = A ( T inside − T outside ) ∑ R (1) Here, A is the surface area of the ceiling, T inside is the inside temperature of room, T outside is the outside air temperature, ∑ R is the total resistance to heat flow. Calculation: The total resistance to heat flow of the ceiling is the sum of all the resistances of the components of the ceiling. Therefore, ∑ R = R 1 + R 2 + R 3 + R 4 = ( 0.68 + 19 + 0.45 + 0.68 ) h ⋅ ft 2 ⋅ °F Btu ∑ R = 20

WebAssign Homework Only for Moaveni's Engineering Fundamentals: An Introduction to Engineering, SI Edition, 6th Edition, [Instant Access]

6th Edition

ISBN: 9780357126677

Author: MOAVENI

Publisher: Cengage Learning US

See similar textbooks

Concept explainers

Temperature as a Fundamental Dimension

There are certain rules to write dimensions of a physical quantity using the fundamental dimensions. They are outlined below.

Question

Chapter 11, Problem 13P

To determine

Find the heat loss through the ceiling.

Expert Solution & Answer

Chapter 11 Solutions

WebAssign Homework Only for Moaveni's Engineering Fundamentals: An Introduction to Engineering, SI Edition, 6th Edition, [Instant Access]

Ch. 11.2 - Prob. 1BYG Ch. 11.2 - Prob. 2BYG Ch. 11.2 - Prob. 3BYG Ch. 11.2 - Prob. 4BYG Ch. 11.2 - Prob. 5BYG Ch. 11.2 - Prob. BYGV Ch. 11.4 - Prob. 1BYG Ch. 11.4 - Prob. 2BYG Ch. 11.4 - Prob. 3BYG Ch. 11.4 - Prob. 4BYG

Ch. 11.4 - Prob. BYGV Ch. 11.6 - Prob. 1BYG Ch. 11.6 - Prob. 2BYG Ch. 11.6 - Prob. 3BYG Ch. 11.6 - Prob. 4BYG Ch. 11.6 - Prob. BYGV Ch. 11 - Prob. 1P Ch. 11 - Prob. 2P Ch. 11 - Alcohol thermometers can measure temperatures in...Ch. 11 - Prob. 4P Ch. 11 - Prob. 5P Ch. 11 - Prob. 6P Ch. 11 - Prob. 7P Ch. 11 - Prob. 8P Ch. 11 - Calculate the R-value for the following materials:...Ch. 11 - Calculate the thermal resistance due to convection...Ch. 11 - Prob. 11P Ch. 11 - Prob. 12P Ch. 11 - Prob. 13P Ch. 11 - Estimate the change in the length of a power...Ch. 11 - Calculate the change in 5 m long copper wire when...Ch. 11 - Prob. 16P Ch. 11 - Prob. 17P Ch. 11 - Prob. 19P Ch. 11 - Prob. 20P Ch. 11 - Prob. 23P Ch. 11 - Prob. 24P Ch. 11 - Prob. 26P Ch. 11 - Prob. 27P Ch. 11 - Prob. 28P Ch. 11 - Prob. 29P Ch. 11 - Prob. 30P Ch. 11 - Prob. 31P Ch. 11 - Prob. 32P Ch. 11 - Prob. 33P Ch. 11 - Prob. 34P Ch. 11 - Prob. 35P Ch. 11 - For Problems 11.11, 11.12, and 11.13, calculate...Ch. 11 - Prob. 37P Ch. 11 - Prob. 38P Ch. 11 - Prob. 39P Ch. 11 - Prob. 40P Ch. 11 - Prob. 41P Ch. 11 - Prob. 42P Ch. 11 - Prob. 43P Ch. 11 - Prob. 44P Ch. 11 - Prob. 45P Ch. 11 - Prob. 46P Ch. 11 - Prob. 47P Ch. 11 - Prob. 48P Ch. 11 - Prob. 49P Ch. 11 - Prob. 51P Ch. 11 - Prob. 52P Ch. 11 - Prob. 53P Ch. 11 - Prob. 54P Ch. 11 - Prob. 55P

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.