A 50 gallon water tank/collector is placed on the ground at an angle facing the sun. The tank is 1.5" thick. The average elevation of the sun during solar window is estimated at 60° in this location....

Extracted text: A 50 gallon water tank/collector is placed on the ground at an angle facing the sun. The tank is 1.5" thick. The average elevation of the sun during solar window is estimated at 60° in this location. a. Determine the optimal angle between the tank and the ground that maximizes the energy reception during the solar window. b. Using the simple model and assuming a 50% energy conversion efficiency, determine the length of the time necessary to raise the temperature of water in the tank from 55 F to 125 E.