In a dairy plant, milk at 4°C is pasteurized continuously
Chapter 7, Problem 144P
(choose chapter or problem)
In a dairy plant, milk at 
is pasteurized continuously at 
at a rate of \(12 \mathrm{~L} / \mathrm{s}\) for 24 hours a day and 365 days a year. The milk is heated to the pasteurizing temperature by hot water heated in a natural-gas-fired boiler that has an efficiency of 82 percent. The pasteurized milk is then cooled by cold water at 
before it is finally refrigerated back to . To save energy and money, the plant installs a regenerator that has an effectiveness of 82 percent. If the cost of natural gas is 
therm 
therm \(=105,500 \mathrm{~kJ}\), determine how much energy and money the regenerator will save this company per year and the annual reduction in entropy generation.
Equation Transcription:
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Equation Transcription:
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12 L/s
=105, 500kJ
