A complex horizontal pipeline, consisting of two parallel branches (Fig.), transports water with a flow rate of Q = 20 l/s. Calculate the flow rates Q1 and Q2 in parallel branches if l1 = 30 m; l2 = 50 m; d1 = 35 mm; d2 = 50 mm; friction head loss coefficients l1 = 0.04 and l2 = 0.02; local loss coefficient Ecr = 1.6.
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