The heat loss from unpainted aluminum side of a house has been calculated on the presumption that overall coefficient of heat transfer is 5 W/m² K. Later, it was discovered that the air pollution levels are such that fouling factor on this side is of the order of 0.0005 m² K/W. Find overall heat transfer coefficient of dirty side

The heat loss from unpainted aluminum side of a house has been calcula

1.	The heat loss from unpainted aluminum side of a house has been calculated on the presumption that overall coefficient of heat transfer is 5 W/m² K. Later, it was discovered that the air pollution levels are such that fouling factor on this side is of the order of 0.0005 m² K/W. Find overall heat transfer coefficient of dirty side
A.	2.9875 W/m² K
B.	3.9875 W/m² K
C.	4.9875 W/m² K
D.	5.9875 W/m² K
Answer» D. 5.9875 W/m² K

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