A diary manufacturer wants to process ice cream and fluid white milk (normal milk) on the same pasteurization skid. The system will have three operations (duties) in total including the cleaning cycle (CIP). Duty 1 â Milk 3.25% B.F. Milk Sp. Gr. = 1.038 3.25% B.F. Milk Viscosity = 1.5 centipoise Duty 2 â I.C. Mix 12% B.F. I.C. Mix Sp. Gr. = 1.10 12% B.F. I.C. Mix Viscosity = 5 centipoise Duty 3 â CIP CIP Solution Sp. Gr. = 1.02 CIP Solution Viscosity = 1.0 centipoise The hold tube is not removable in the system once certified by the USDA, which means the hold tube needs to be able to process both the ice cream mix and the milk. Milk pasteurization is a 16 s hold time and ice cream is 32 s. a. The booster pump (only used during CIP) allows for a maximum flow rate of 10 GPM. If 5 ft/s is needed to achieve a proper shear rate, what is the largest diameter of food grade (sanitary) stainless tubing (tube and pipe are two different things but both are nominal) is needed for the entire system?
A diary manufacturer wants to process ice cream and fluid white milk (normal milk) on the same pasteurization skid. The system will have three operations (duties) in total including the cleaning cycle (CIP). Duty 1 â Milk 3.25% B.F. Milk Sp. Gr. = 1.038 3.25% B.F. Milk Viscosity = 1.5 centipoise Duty 2 â I.C. Mix 12% B.F. I.C. Mix Sp. Gr. = 1.10 12% B.F. I.C. Mix Viscosity = 5 centipoise Duty 3 â CIP CIP Solution Sp. Gr. = 1.02 CIP Solution Viscosity = 1.0 centipoise The hold tube is not removable in the system once certified by the USDA, which means the hold tube needs to be able to process both the ice cream mix and the milk. Milk pasteurization is a 16 s hold time and ice cream is 32 s. a. The booster pump (only used during CIP) allows for a maximum flow rate of 10 GPM. If 5 ft/s is needed to achieve a proper shear rate, what is the largest diameter of food grade (sanitary) stainless tubing (tube and pipe are two different things but both are nominal) is needed for the entire system?
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