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MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
2nd Edition
ISBN: 9781337551755
Author: DUNLAP
Publisher: Cengage Learning US
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Chapter 8, Problem 9P
To determine
Find the required minimum (ability of conduct heat)
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Consider a house that is approximated as a cube that is 8 m on a
side and has no windows. The house loses heat from the four
walls and the roof. For an inside temperature of 20°C and an
outside temperature of –20°C, it is desired to keep the total heat
loss less than 5 kW. What is the minimum RSj value that is
required for the walls and roof?
6
The concrete wall of a building is 0.114 m thick. The temperature inside the building is 23.4 °C, while the temperature outside is 0.0 °C.
Heat is conducted through the wall. The outside of the wall loses the energy only due to radiation. What is the emissivity of the wall?
Number
i
Units
Conduction
L
Radiation
Chapter 8 Solutions
MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
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