A cold storage room has walls made of 220 mm of brick on the outside, 90mm of plastic foam, and finally 16mm of wood on the inside. The outside and inside air temperatures are 25ºC and -3ºC. If the inside and outside heat transfer coefficients are 30 and 11 W/m2 ºC respectively, and thermal conductivities of brick, foam and wood are 0.99,0.022 and 0.17 W/mºC respectively. Determine i) The rate of heat removal by refrigeration if the total wall area is 85 m2 ii) The temperature of the inside surface of the brick