Bottled beer is pasteurized by passing 50 litres of hot water at 70 C over each...

 

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Bottled beer is pasteurized by passing 50 litres of hot water at 70 °C over each bottle for 10 minutes. The water is recycled, so that its minimum temperature is 40 °C. A brewery in Kenya proposes to use energy to heat this water. Given that the brewery produces 65,000 filled bottles in an 8 h working day, and located in Nairobi (latitude 1°17 S, longitude 39°48' E). Assuming horizontal collectors and pw=1000 kg/m and Cpw 1 kJ/kg/K, calculate Part (a) – 30 Marks Minimum daily insolation on a horizontal plane with clear skies, Part (b) – 120 Marks The minimum horizontal collector area required, assuming no heat supply losses Bottled beer is pasteurized by passing 50 litres of hot water at 70 °C over each bottle for 10 minutes. The water is recycled, so that its minimum temperature is 40 °C. A brewery in Kenya proposes to use energy to heat this water. Given that the brewery produces 65,000 filled bottles in an 8 h working day, and located in Nairobi (latitude 1°17 S, longitude 39°48' E). Assuming horizontal collectors and pw=1000 kg/m and Cpw 1 kJ/kg/K, calculate Part (a) – 30 Marks Minimum daily insolation on a horizontal plane with clear skies, Part (b) – 120 Marks The minimum horizontal collector area required, assuming no heat supply losses