A wall measures

(9\\\\times 3)m^(2)

and it consists of the following layers, the wall has one door and two windows with an area of

1.8m^(2)

and

3.5m^(2)

, respectively.\ The wall consists of the following layers:\ (1) Hard stone of

70mm

thickness and

k=1.7(W)/(m).\\\\deg C

.\ (2) Concrete of

200mm

thickness and

k=1.75(W)/(m).\\\\deg C

.\ (3) Polystyrene of

50mm

thickness and

k=0.04(W)/(m).\\\\deg C

.\ (4) Plaster of

20mm

thickness and

k=1.25(W)/(m).\\\\deg C

.\ and the inside and outside heat transfer coefficients are 8.5 and

30(W)/(m^(2)).\\\\deg C

, respectively.\ The inside and outside air temperatures are

22\\\\deg C

and

10\\\\deg C

, respectively.\ (1) Calculate the following:\ (a) Heat loss through the wall\ (disregard the heat loss through windows and door)

A wall measures (93)m2 and it consists of the following layers, the wall has one door and two windows with an area of 1.8m2 and 3.5m2, respectively. The wall consists of the following layers: (1) Hard stone of 70mm thickness and k=1.7W/mC. (2) Concrete of 200mm thickness and k=1.75W/m.C. (3) Polystyrene of 50mm thickness and k=0.04W/m.C. (4) Plaster of 20mm thickness and k=1.25W/m.C. and the inside and outside heat transfer coefficients are 8.5 and 30W/m2.C, respectively. The inside and outside air temperatures are 22C and 10C, respectively. (1) Calculate the following: (a) Heat loss through the wall (disregard the heat loss through windows and door)