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A wall is constructed of two layers of sheetrock (k = 0.10 Btu/hr-ft-F°) separated by 12...

A wall is constructed of two layers of sheetrock (k = 0.10 Btu/hr-ft-F°) separated by 12 inches of fiberglass insulation (k = 0.020 Btu/hr-ft-F°). The two layers of sheetrock are 3/4 of an inch thick so the wall is sheetrock, insulation then sheetrock.

What is the thermal resistance of this construction (there are no studs!) in units of hr-F°/Btu to three significant digits?

engineering   Mechanical-Engineering   
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Answer #1

is Sheetaock. thickness of insulation, 1 inches-ft thickness of sheetmek..Llel3e3xL2 a inches035 Sheetanck Li 2 it

her taomsfe Rea unit atoe in Inennal Conmfosile cal, 4 Rth 9:35 0.75 1 6 5.co h2-/Btu

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