Work Problem 3.15 assuming surfaces parallel to the x-direction are adiabatic.

Data From Problem 3.15

Consider a composite wall that includes an 8-mm-thick hardwood siding, 40 mm by 130-mm hardwood studs on 0.65-m centers with glass fiber insulation (paper faced, 28 kg/m3), and a 12-mm layer of gypsum (vermiculite) wall board.

What is the thermal resistance associated with a wall that is 2.5 m high by 6.5 m wide (having 10 studs, each 2.5 m high)? Assume surfaces normal to the x-direction are isothermal.

Transcribed Image Text:

130 mm 40 mm | -Wood siding -Stud -Insulation -Wall board