Unit Operations CHEG 3023 In Class Practice Problems -Friction

# Unit Operations CHEG 3023 In Class Practice Problems -Friction

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Dr. Nabila Shamim Page 1 Unit Operations CHEG 3023 Friction In class Practice Problems 1. 0.015 m 3 /s of acetic acid is pumped through a 75 mm diameter horizontal pipe 70 m long. What is the pressure drop in the pipe? Viscosity of acid = 2.5 mNs/m 2 , density of acid = 1,060 kg/m 3 , and roughness of pipe surface = 6 × 10 -5 m. 2. Two reservoirs are connected by 2000ft of 3 in schedule 40 pipe. We wish to pump 200 gal/min of water from one to the other. The levels in the reservoirs are the same and both are open to atmospheres. What are the pump work per unit mass, the required pump power and the required pump pressure rise? 3. The pipe flow in Fig. is driven by pressurized air in the tank. What gage pressure p 1 is needed to provide a 20°C water flow rate

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