Final answer:
The rate of heat transfer through a wall is calculated using the R-values of its materials and the temperature difference across it, considering factors like air infiltration which affect a building's energy efficiency.
Step-by-step explanation:
The question pertains to the rate of heat transfer through the walls of a dwelling and involves calculations based on the thermal resistance (R-value) of material layers in the wall. To solve this, one must comprehend how the R-value contributes to the insulating properties of construction materials and the calculation of the U-value as well.
Using the given dimensions and material R-values, the rate of heat flow through the wall can be calculated using the formula for heat transfer through a layer, Q = ΔT/(R1 + R2 + ...), with Q being the heat flow rate, ΔT being the temperature difference, and R being the thermal resistance of each layer.
Additionally, factors like air infiltration, which is the unintentional introduction of outside air into a building typically through cracks and crevices, can significantly impact the overall energy efficiency and heat loss of a house.