In July in Los Angeles, the incident sunlight at ground levelhas a power density

ID: 688560 • Letter: I

Question

In July in Los Angeles, the incident sunlight at ground levelhas a power density of 1.2 kW/m2 at noon. Aswimming poolof area 50m2 is directly exposed to the sun. What is themaximum rate of loss of water? Assume that all the radiant energyis absorbed. (Please show work) In July in Los Angeles, the incident sunlight at ground levelhas a power density of 1.2 kW/m2 at noon. Aswimming poolof area 50m2 is directly exposed to the sun. What is themaximum rate of loss of water? Assume that all the radiant energyis absorbed. (Please show work)

Explanation / Answer

power = 1.2 kW/ m2 *50 m2 = 60 Watts = 60J/seconds Heat = heat to raise temp + latent heat = mass*Cp*T +mass*latent heat = mass*[Cp*T + latent heat] rate of water loss = (60 J/s) / [ 4.18 J/g-C*[100 C - 25 C] + 40.65kJ/mol * 1000 J/1kJ * 1mol/18g] rate of water loss= 2.33 x 10-2 gram/s

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In July in Los Angeles, the incident sunlight at ground levelhas a power density

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In July in Los Angeles, the incident sunlight at ground levelhas a power density

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