Task 4.2 From a closed tank with excess pressure on the

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Task 4.2 From a closed tank with excess pressure on the

Task 4.2
From a closed tank with excess pressure on the oil surface corresponding to the gauge pressure gauge, transformer oil is fed into the open sump through a pipe with a diameter d and length l (Fig. 1). A plug valve with a closing angle α is installed on the pipe. Determine what should be the difference in oil levels in the tank and to ensure the throughput of the pipeline Q.
Given: rman = 0.11 at = 10791 Pa; d = 50mm = 0.05m; l = 60m; Q = 2.5l / s = 0.0025m3 / s; α = 300
Take: = 884kg / m3 - oil density; coefficient of kinematic viscosity of oil υ = 30 * 10-6m2 / s
Define: N

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