Question
An edible oils factory (as shown below in aerial view not to scale) currently stores oil in Tank A before moving it to a second
An edible oils factory (as shown below in aerial view not to scale) currently stores oil in Tank A before moving it to a second storage area (Tank B) at 250kg/min. Line A-B, which has a 60 mm portion including two 45 bends, as well as a 40 mm portion needs to be modified in order to make way for administration buildings. As such, Tank C will be constructed and the oil will flow, at the same flowrate, in a more direct route to Tank B. Valve V1, which will remain in place, will be closed so as to block flow when all old piping and tanks are removed. a.) Calculate the energy loss due to friction (in J/kg) of the current system (Tank A to Tank B). b.) Compare this to the energy loss of the new system (Tank C to Tank B). Explain why the friction is higher or lower in this pipe. c.) How will the following two suggested modifications to the system affect the flow to tank B: i) The oil is heated up before being pumped to Tank B. ii) The pipe diameter is increased Additional information: Take e = 0.00005 Equivalent lengths: Elbow: 30D Valve: 12D 45 bends: 15D Straight through Tee: 20D Right angle Tee: 70D Sudden contraction: 22D = 0.347 cP = 1200 kg.m-3 It can be assumed that there is no change in horizontal height in the pipeline. Further, the lengths from V1 to the Tee and V3 to the old pipeline are negligible; as is the frictional loss at the entry and exit to a pipe.
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