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fraction of exyeen in dry air is 0.2 t, and the density of lajd aayien in 1.14 ginct. eat Transfer Problems 5. A room has a temperature of 18C and the outside temperature is 2C. The wall has a conductivity of 0.1 W/mK and is 350mm thick. If the wall is 4.2m by 2.5m, what is the heat flux from the room through the wall to the outside. The formulas to use are; q=AQ where q" is the heat flux (W/m2),Q is the heat transfer (W), and A is the cross-sectional area (m2) and Q=Ah11+AkL+Ah21T1T2 where Q is the heat flow (W),T1 is the room temperature (C),T2 is the outside temperature (C), A is the cross-sectional area (m2),h1 is a heat transfer coefficient (use 5), L is the wall thickness ( m ), k is the thermal conductivity (W/mK), and h2 is a heat transfer coefficient (use 5). eat Transfer Problems 5. A room has a temperature of 18C and the outside temperature is 2C. The wall has a conductivity of 0.1 W/mK and is 350mm thick. If the wall is 4.2m by 2.5m, what is the heat flux from the room through the wall to the outside. The formulas to use are; q=AQ where q " is the heat flux (W/m2),Q is the heat transfer (W), and A is the cross-sectional area (m2) and Q=Ah11+AKL+Ah21T1T2 where Q is the heat flow (W),T1 is the room temperature (C),T2 is the outside temperature (C), A is the cross-sectional area (m2),h1 is a heat transfer coefficient (use 5), L is the wall thickness ( m ), k is the thermal conductivity (W/mK), and h2 is a heat transfer coefficient (use 5)