Task 47 To the steam cooler through the tube

Task 47 Cooling water with a temperature of 20 ° C with a flow rate Q = 0.00278 m3/s enters the steam cooler through a tube with drills. The flow rate of the hole is μ = 0.6. The density of water at a temperature of 20 ° C is p = 998.2 kg / m3, the kinematic viscosity coefficient is v = 10-6 m2/s. The water pressure in the tube p1 = 106 Pa, the pressure in the body of the steam cooler p2 = 0.7 × 106 Pa. Determine how many holes with a diameter of d = 0.003 m need to be drilled in the tube to ensure a given water flow.