A continuous steriliser with a steam injector and a flash cooler will be employed to sterilise...

 

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A continuous steriliser with a steam injector and a flash cooler will be employed to sterilise medium continuously. The typical bacterial spore count of the medium is about 5x10¹2 m³, which needs to be reduced to such an extent that only one organism can survive during the three months of continuous operation. The heat-resistant bacterial spores in the medium can be characterised by an Arrhenius coefficient (kdo) of 5.7x10³9 h¹ and an activation energy (Ed) of 2.834x105 kJ kmol¹. The holding section of the steriliser will be constructed with 20m long pipe with an inner diameter of 0.078m. Steam at 600kPa is available to bring the steriliser to an operating temperature of 125°C. The physical properties of this medium at 125°C are Cp = 4.187 kJ/kg-K, p= 1000kg m³, and u = 4 kgm¹¹h¹. Determine how much medium can be sterilised per hour in this operation? State all assumptions needed. A continuous steriliser with a steam injector and a flash cooler will be employed to sterilise medium continuously. The typical bacterial spore count of the medium is about 5x10¹2 m³, which needs to be reduced to such an extent that only one organism can survive during the three months of continuous operation. The heat-resistant bacterial spores in the medium can be characterised by an Arrhenius coefficient (kdo) of 5.7x10³9 h¹ and an activation energy (Ed) of 2.834x105 kJ kmol¹. The holding section of the steriliser will be constructed with 20m long pipe with an inner diameter of 0.078m. Steam at 600kPa is available to bring the steriliser to an operating temperature of 125°C. The physical properties of this medium at 125°C are Cp = 4.187 kJ/kg-K, p= 1000kg m³, and u = 4 kgm¹¹h¹. Determine how much medium can be sterilised per hour in this operation? State all assumptions needed.

Answer rating: 100% (QA)

To determine the amount of medium that can be sterilized per hour in the given operation we need to consider several factors and make a few assumption... View the full answer