you have been asked to design a solar collectors installed in South Florida on top of a roof for which the incoming radiation is 380 Btu/hr. sq. Ft you need to maintain a temperature of a water heater tank at 120 F at all time to be used for heating purpose. The tank is 1000 gallon and placed in the garage. Find the minimum required collector surface area that can maintain the temperature at coldest day in South Florida. Also if for three days in row the weather is cloudy and the incoming irradiation reduced to 210 Btu/hr sq. ft how long it will take the tank temperature to reduce to the of outside garage temperature. Make all assumptions that is necessary. Show step by step your solution and upload as a file if you have difficulty to type here.