Plymouth State University Operations And Supply Chain Management Assignment Help - In a dairy plant
Question - In a dairy plant, milk at 4°C is pasteurized continuously at 72°C at a rate of 12 L/s for 24 h 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 18°C before it is finally refrigerated back to 4°C. To save energy and money, the plant installs a
regenerator that has an effectiveness of 82 percent. If the cost of natural gas is $1.10/therm (1 therm
105,500 kJ), determine how much energy and money the regenerator will save this company per
year
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