2.5 cm 7.5 cm- -5 cm- 66 C 370 C- Concrete cInder block k = 0.76 W/m.C = 0.11 W/m.C aujd

Sustainable Energy
2nd Edition
ISBN:9781337551663
Author:DUNLAP, Richard A.
Publisher:DUNLAP, Richard A.
Chapter8: Direct Use Of Solar Energy
Section: Chapter Questions
Problem 17P
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2.5 CM
7.5 cm
-5 cm-
370 C-
-66 C
Concrete clInder
block
k = 0.76 W/m.C
Bull ding
brick
k = 0.69 W/m.C
T1
-T2
Figure Q4
Fir k = 0.11 W/m.C
Yellow plne
k = 0.147 W/m.C
Transcribed Image Text:2.5 CM 7.5 cm -5 cm- 370 C- -66 C Concrete clInder block k = 0.76 W/m.C Bull ding brick k = 0.69 W/m.C T1 -T2 Figure Q4 Fir k = 0.11 W/m.C Yellow plne k = 0.147 W/m.C
Q4:
Consider the heat flow in one direction (x-axis) through the composite wall shown in
Figure Q4. Draw the thermal circuit then determine T1 and T2, and the heat flux (q, W/m2),
knowing that the thermal conductivity of the Fir (0.11 W/m.°C), the concrete cinder block
(0.76 W/m.°C), the building brick (0.69 W/m.°C) and the yellow pine (0.147 W/m.°C).
Consider also the concrete cinder block and building brick sections are of equal thickness.
Transcribed Image Text:Q4: Consider the heat flow in one direction (x-axis) through the composite wall shown in Figure Q4. Draw the thermal circuit then determine T1 and T2, and the heat flux (q, W/m2), knowing that the thermal conductivity of the Fir (0.11 W/m.°C), the concrete cinder block (0.76 W/m.°C), the building brick (0.69 W/m.°C) and the yellow pine (0.147 W/m.°C). Consider also the concrete cinder block and building brick sections are of equal thickness.
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