Hydraulics

Task 1
Determine the density and viscosity of kerosene for storage at a tank farm at critical temperatures of 32 and -41 ° C, if βt = (0.000101 0.00001 * v) 1 / deg, ν20 = 0.0328 * 10-4 m2 / s, ν40 = 0.0250 * 10-4 m2 / s, ρ20 = 780kg / m3.
Task 2
A rectangular float with a cross section of 10x20cm floats in water.
Determine the height of the submerged part of the float, if its weight
(2.5 0.1 * v) N.
Task 3
After cleaning the suction line of the pump unit (l = (10 0.01 * v) m, d = (300 v) mm, efficiency = η = 0.65), the coefficient of local filter resistance ξ decreased from 40 to 10, and the equivalent roughness pipes ke - decreased from 1 to 0.1 mm.
Pump flow Q = 0.07 m3 / s;
Determine the annual energy savings from this operation.
Water temperature 20 ° C.
Task 4
Oil is pumped through the pipeline with a density of ρ = (900 v) kg / m3 in an amount of Q = 0.04 m3 / s. Section 2-2 is located above section 1-1 by 10 m. The pipe diameters d1 = 0.3 m; d2 = 0.2m, pressure p1 = 1.5MPa, p2 = 1MPa.
Determine the pressure loss along the length in the section 1-1 to 2-2.
Task 5
From a large tank with thin walls at a constant level of H = (2.5 0.1 * v) m above the hole, water flows from the latter. The diameter of the hole is d0 = 30 mm. Determine the flow rate and water flow.