A cold storage room has wall made of 0.2m thick layer of brick (k = 0.98W/m-k) on the outside. The middle layer is of 0.09m thick of plastic foam (k = 0.2W/m-k) and 0.015m inside layer wood (k = 0.17W/m-k). The outside and inside convective heat transfer coefficient and temperature are 12W/m-k, 28 C and 29W/m-k, -2.6 C respectively. If the wall area is 90m².Find the total equivalent heat resistance.

In the above question find he heat removed by refrigeration.