A cooling system is to be designed for a food storage warehouse for keeping perishable foods cool prior to transportation to grocery stores. The warehouse has an effective surface area of 1860 m² exposed to an ambient air temperature of 32°C. The warehouse wall insulation (k = 0.17 W/ (m K) ) is 7.5 cm thick. Determine the rate at which heat must be removed ( W ) from the warehouse to maintain the food at 4°C.