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QUESTION 19 Consider N solar collectors (N= 12, 14, 16), of dimension [2m x 2m, 2m x 1.5 m, 2m x2.5m] and an efficiency of (75, 65, 85] percent system, used to heat a water tank of (6000, 4000, 5000] liters. Calculate the final temperature reached after 8.8 sun-hours in Dubai under the following conditions: T= Initial temperature is (25)°C. DNI - Solar irradiation is (900) W/m. Cp - Specific heat of water is 4190 (0/kg. °C) Use the following Formula Rate of useful heat gain Quseful = mfCp(Tf, out – Tr, in) %3D Rate of useful heat gain Quseful = ncoll Acoll N.DNI %3D Power output of the plant (electric power generated) P = n Acoll N DNI IN-[N] i. Area (8) . Efficiency [g Iv, Volume [D) (a) Final temperature will will be? (A °C (Note: answer the question in two decimal units)

QUESTION 19 Consider N solar collectors (N= 12, 14, 16), of dimension [2m x 2m, 2m x 1.5 m, 2m x2.5m] and an efficiency of (75, 65, 85] percent system, used to heat a water tank of (6000, 4000, 5000] liters. Calculate the final temperature reached after 8.8 sun-hours in Dubai under the following conditions: T= Initial temperature is (25)°C. DNI - Solar irradiation is (900) W/m. Cp - Specific heat of water is 4190 (0/kg. °C) Use the following Formula Rate of useful heat gain Quseful = mfCp(Tf, out – Tr, in) %3D Rate of useful heat gain Quseful = ncoll Acoll N.DNI %3D Power output of the plant (electric power generated) P = n Acoll N DNI IN-[N] i. Area (8) . Efficiency [g Iv, Volume [D) (a) Final temperature will will be? (A °C (Note: answer the question in two decimal units)

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QUESTION 19 Consider N solar collectors (N = 12, 14, 16), of dimension [2m x 2m, 2m x 1.5 m, 2m x2.5m] and an efficiency of (75, 65, 85) percent system, used to heat a water tank of (6000, 4000, 5000] liters. Calculate the final temperature reached after 8.8 sun-hours in Dubai under the following conditions: T = Initial temperature is (25)°C. DNI = Solar irradiation is (900) W/m2. Cp = Specific heat of water is 4190 g/kg.°C) Use the following Formula Rate of useful heat gäin Quseful = mfCp(Tf, out - Tr, in) %3D Rate of useful heat gain Quseful = Ncoll.Acoll-N.DNI Power output of the plant (electric power generated) P = n Acoll N dNi LN= [N] ii. Area = (B) L. Efficiency= [CI iv. Volume [DI (a) Final temperature will will be? (A] °C [Note: answer the question in two decimal units)
Transcribed Image Text:QUESTION 19 Consider N solar collectors (N = 12, 14, 16), of dimension [2m x 2m, 2m x 1.5 m, 2m x2.5m] and an efficiency of (75, 65, 85) percent system, used to heat a water tank of (6000, 4000, 5000] liters. Calculate the final temperature reached after 8.8 sun-hours in Dubai under the following conditions: T = Initial temperature is (25)°C. DNI = Solar irradiation is (900) W/m2. Cp = Specific heat of water is 4190 g/kg.°C) Use the following Formula Rate of useful heat gäin Quseful = mfCp(Tf, out - Tr, in) %3D Rate of useful heat gain Quseful = Ncoll.Acoll-N.DNI Power output of the plant (electric power generated) P = n Acoll N dNi LN= [N] ii. Area = (B) L. Efficiency= [CI iv. Volume [DI (a) Final temperature will will be? (A] °C [Note: answer the question in two decimal units)
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