In a solar water heater, energy from the Sun is gathered by water that circulate

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

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