What is the thermal conductivity of bricks (in W/(m · K))? on each of these
What is the thermal conductivity of bricks (in W/(m · K))? on each of these
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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What is the thermal conductivity of bricks (in W/(m · K))? on each of these

Transcribed Image Text:Calculate the R-value for the following materials.
(a) 3 in. thick brick
What is the thermal conductivity of bricks (in W/(mK))?
W/(mK)
What is the thickness of the brick in meters?
0.0762
What is the R-value (in m² K/W)?
0.0762
m².
(b) 11 cm thick brick
m
What is the thickness of the brick in meters?
0.11
m
What is the R-value (in m². K/W)?
0.1100
m². K/W
(c) 15 in. thick concrete slab
What is the thermal conductivity of concrete (in W/(mK))?
0.2721
W/(mK)
What is the thickness of the concrete slab in meters?
0.3809998
• K/W
m
What is the R-value (in m2
0.0500
m². K/W)?
m². K/W
(d) 22 cm thick concrete slab
What is the thickness of the concrete slab in meters?
0.22
m
What is the R-value (in m². K/W)?
m². K/W
0.1571
(e) 1 cm thick human fat layer
What is the thermal conductivity of human fat layer (in W/(mK))?
W/(mK)
What is the thickness of the human fat layer in meters?
0.01
m
.
What is the R-value (in m² K/W)?
m². K/W
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