In a solar water heater, energy from the Sun is gathered by water that circulate
ID: 2300928 • Letter: I
Question
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that the efficiency of the overall system is 27.0% (that is, 73% of the incident solar energy is lost from the system). What collector area (in square meters) is necessary to raise the temperature of 100 L of water in the tank from 22
Explanation / Answer
Intensity of sun * time * area * efficiency = Heat required to raise the temperature of 100L by ( 35