edf40wrjww2CF_PaperMaster:Desc
2. Throughput is defined as
Throughput=Min {Input rate, Process capacity, Demand rate}
Input Rate = 3000 bbls/hr
Input Rate and Demand Rate > Process Capacity
Throughput =Min {Process Capacity}
It is evident from the process flowchart that the capacity of the drying unit is minimum at 450 and maximum at 600 bbls/hr. However, this does not apply to dry berries.
Both dry and wet berries go through the separation process with a capacity of 1200 bbls/hr. Since 70% of the berries are wet, the capacity for separation is recalculated as
Separation capacity for wet berries = 70% of 1200 bbls/hr = 840 bbls/hr
Separation capacity for dry berries = 30% of 1200 bbls/hr = 360 bbls/hr
Since the output from the dryer unit for wet berries can only be a maximum of 600 bbls/hr, we can allocate the additional separation capacity for wet berries to dry berries.
Additional separation capacity = 840-600= 240 bbls/hr
New separation capacity for wet berries = 840 – 240 = 600 bbls/hr
New separation capacity for dry berries = 360 + 240 = 600 bbls/hr
Maximum long term achievable throughput rate = Min {Drying, Separating}
= 600 bbls/hr
3.
The current unloading time for a truck with average 75 bbl is 5-10 minutes.
Assuming the average unloading time is 7.5 minutes,
The process capacity of one truck = 75*(60/7.5) = 600 bbls/hr
This gives the capacity of 5 Kiwanee dumpers at 3000 bbls/hr.
70% of berries are wet; arrival rate for wet berries is 2100 bbls/hr
However, the capacity for ...