Consider the wall section shown below of a total area of 10m", if the outside air temperature is 8F and the interior air is 70F. a) Calculate the total heat flow by conduction (and approximating exterior and interior impact of other modes) in both SI and IP units. b) Calculate the contact temperature between insulation and gypsum, as well as the exterior surface temperature c) Calculate the total heat flow assuming tripling the insulation layer thickness, and comment on your result For the thermal parameters of the materials (conductivities or thermal resistances), you can use the values on the sketch, but you're encouraged to explore your textbook's tables 5-1 (for materials), 5-2 (for surface coefficients), and 5-3 (for plane air spaces.) Thickness Conductivity (Btu-in/hr.tt'-F) Resistance Rhr-fe":f/otul Brick Air Gypsum plaster board Insulation Layer Brick All Insulation Gypsum 114 --- 1/2 4" 1/ 0.25 0323