Essay about National Cranberry - 801 Words

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†¦show more content†¦Total Capacity (bbls/hr) Wet (bbls/hr) Dry (bbls/hr) Dumper 3000 2100 900 Bins 7200 3200 4000 Destoning 4500 X 4500 Dechaffing 4500 3150 1350 Drying 600 600 X Separating 1200 600 600 Arrival rate of berries = 1500 bbls/hr Start time for processing is 11 AM. Arrival time of berries = 7 AM. Time for storage in the dumper and bins = 4 hours Total number of berries = 1500*4 = 6000 bbls Total number of wet berries = 70% of 6000 = 4200 bbls Total number of dry berries = 30% of 6000 = 1800 bbls Capacity for storage of Dry berries in bins = 3200 bbls Arrival rate for dry berries = 30% of 1500 bbls/hr = 450 bbls/hr Bottleneck for dry berries is Separation at 600 bbls/hr which is greater than arrival rate. Excess berries in bins start getting processed at (600-450) =150 bbls/hr Arrival of berries stops at 7 PM. Excess dry berries remaining after 7 PM = 1800 – 8*150 = 600 bbls. Capacity for storage of Wet berries in bins = 4000 bbls Arrival rate for wet berries = 70% of 1500 bbls/hr = 1050 bbls/hr Bottleneck for dry berries is Drying at 600 bbls/hr which is less than arrival rate. This leads to excess dry berries in addition to the wet berries in the storage. Rate at which excess backlog wet berries are generated = (1050-600) = 450 bbls/hr Arrival of berries stops at 7 PM. Excess wet berries remaining after 7 PM = 4200 + 8*450 = 7800 bbls. Wet berries remaining in bins = 3200 bbls Wet berries remaining to beShow MoreRelatedEssay on National Cranberry Cooperative670 Words   |  3 PagesNational Cranberry Cooperative In early 1981, at the National Cranberry Cooperative’s receiving plant number 1 (RP1), overtime costs are too high and delivery trucks and their drivers have to wait several hours to unload. The trucks have to wait because the plant’s holding bins fill up and there is not temporary storage. 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