The wall of a house consists of three layers: a wooden outer wall with an R factor of 2.00, a 3-in layer of fiberglass insulation with an R factor of 12.00, and a gypsum-board inner wall with an R factor of 0.38; (all R factors are in h. ft². °F/Btu). When the temperature is 68 °F inside the house and -6°F outside, what is the rate of heat loss through an 8-ft by 15-ft section of this wall?
The wall of a house consists of three layers: a wooden outer wall with an R factor of 2.00, a 3-in layer of fiberglass insulation with an R factor of 12.00, and a gypsum-board inner wall with an R factor of 0.38; (all R factors are in h. ft². °F/Btu). When the temperature is 68 °F inside the house and -6°F outside, what is the rate of heat loss through an 8-ft by 15-ft section of this wall?
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Transcribed Image Text:14. The wall of a house consists of three layers: a wooden outer wall with an R factor of 2.00, a 3-in layer of
fiberglass insulation with an R factor of 12.00, and a gypsum-board inner wall with an R factor of 0.38;
(all R factors are in h∙ ft². °F/Btu). When the temperature is 68 °F inside the house and −6°F outside,
what is the rate of heat loss through an 8-ft by 15-ft section of this wall?
A) 741 Btu/h B) 1482 Btu/h C) 371 Btu/h D) 1112 Btu/h E) 556 Btu/h
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