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April 18, 2014

Homework Help: Phyics

Posted by HELP PLEASE on Friday, April 12, 2013 at 7:28am.

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 15.0% (that is, 85% of the incident solar energy is lost from the system). What collector area (in square meters) is necessary to raise the temperature of 440 L of water in the tank from 24C to 36C in 2.6 h when the intensity of incident sunlight is 610 W/m2? The specific heat of water is 4186 J/kgK. The density of water is 1.00 g/cm3

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