Water is pumped from a lake to a large storage tank that is on the top open to the atmosphere. The water surface in the tank is 20 m above the water surface of the lake. The volume flow is 50 litres/s and 15 kW of electrical power is used for it. Disregard losses in flow energy due to friction and from changes in the kinetic energy of the water. Use ρ = 997 kg/m3 as mass density for liquid water. a) Calculate the total efficiency of the pump-motor unit. b) Calculate the pressure difference between inlet out outlet of the pump needed to pump the water up to the idea.

Q: Q6) An oil pump is drawing (25 kW) of electric power while pumping oil with (= 860 kg/m3) at a rate…

A:

Q: The maximum thrust a wind turbine with blade diameter of 12 m can withstand is 450 N if subject to…

A:

Q: A manometer with water as working fluid is connected to an air duct as shown in Figure 1.1. Flow…

A:

Q: A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 lbm/cu…

A: Given Data: The volumetric flow rate of air, V=500 ft3/min Change in internal energy, ∆U=33.8…

Q: A centrifugal pump compresses 3 000 L/min of water from 98 kPaa to 320 kPaa. The inlet and outlet…

A:

Q: A simple saturated refrigeration R-12 system operates at an evaporating temperature of -11  °C and a…

A:

Q: pump rated at 500 W is made to transfer water from an open tank at ground level, to another open…

A: Given:Pr=500 Wh=18 mm=2.6 kg/s

Q: 3.) An air compressor handles 8.5 m³/min of with a density of 1.26 kg/m² and a pressure of 1 atm,…

A: Given data  Volume flow rate = 8.5 m3/min density (ρ)= 1.26 kg/m3  Pressure (P)= 1 atm  discharge…

Q: Steam generators are a type of heat exchanges that are used in power plants to generate steam at…

A: Answer: (i) The steam flow rate is 11.9522 kg/sec and the inlet velocity of the steam is 4.2441…

Q: 1. Water in the rural areas is often extracted from underground water source whose free surface is…

A: The necessary power input to the pump for a steady flow of water is 12.89 kW.

Q: Hydro-machinery such as turbines and pumps represent fluid devices that have wide variety of…

A:

Q: Hairdryer is an electromechanical device that blows ambient or hot air over damp hair to speed the…

A: Given data: Density at inlet = ρinlet = 1.18 kg/m3 Density at exit = ρexit = 0.90 kg/m3 We have to…

Q: On a hot summer day, the air in a well-sealed room is circulated by a 55 W fan (Note that the motor…

A: Write the net shaft power.   Pshaft=55 W   Write the density of the air.   ρ=1.15 kg/m3   Write the…

Q: Required information NOTE: This is a multi-part question. Once an answer submitted, you will be…

A: GivenH=15mQ=98L/s=98×10-3 m3/sPelectric=15.4kWρ=1000 kg/m3

Q: An electric motor converts electricity to rotating shaft work with an efficiency of 42%. The…

A:

Q: 4. A compressor draws in 500 of air whose density is 0.079 min and discharges it with a density of…

A: Given data: The drawing rate of compressor is V = 500 ft3/min. The density of air at the time of…

Q: turbine receives steam at a rate of 1.26 kg/s and its shaft power is 500 kW. The casing is…

A: This question is based on the concept of the First Law of Thermodynamics.

Q: Water vapor enters a continuous flow turbine with 6 MPa pressure, 450oC temperature and 80 m/s…

A: Steam turbine It is a device which converts the thermal energy of steam into electrical energy. High…

Q: A steady state flow compressor draws in 14170 li/min of air whose density is 1.267 kg/m3 and…

A:

Q: A wind turbine has a blade length of 30 m. In a given day, average speed of wind for 5 hours is 9…

A:

Q: The figure below shows a mixing tank initially containing minitial = 2000 lb of liquid water. The…

A: Given:Initial mass of water, mi=2000 lbMass flow rate from 1st inlet pipe, m1=0.8 lb/sMass flow rate…

Q: 2. Consider a wind turbine that is situated in an area that has steady winds. The turbine rotates at…

A: Given: Speed of the turbine→N=16 RPM Hence rotational speed of the turbine: →ω=2πN60=2×π×1660=1.67…

Q: A pump continuously supplies water to an open tank for 12 hours daily. If the theoretical horsepower…

A: The given values are - Ptheoretical=4 hp, Electricity consumption=4.5Php/kWhη=0.65 The actual power…

Q: A cliff diver with a mass of 175 lbm dives from a 20 foot cliff into the sea. The initial velocity…

A: Given:m=175 lbmH=20 footinitial velocity,u=5 ft/sg=32.2 ft/s2a) Let h be the height of the diver…

Q: m and it reduces to 0.8 cm at the nozzle exit. If it takes 50s to fill the bucket with water,…

A: V=10gal∆t=50sD=2cmDiameter hole reduces = 0.8cm To-Find:- a Volumetric Flow rate and mass flowrate…

Q: A pump at 65% efficiency is used to transport water from a large open reservoir to a point 10m above…

A:

Q: Water flows inside a heat exchanger, where it gains heat. The diameter at the inlet is 50 mm with a…

A: Given data: The diameter of the pipe at the inlet, di = 50 mm. Fluid velocity at the inlet, vi = 2…

Q: A pump rated at 1800W is used to transfer water from an open tank to another tank. The surfaces of…

A: Given that: Electric power consumed by the pump = 1800 W Vertical distance between the two tanks =…

Q: A pump is used to raise the pressure of water from 0 psig to 55 psia. How much power (in kW) will be…

A: GIVEN: A pump ; Pressure rise of water is 55 psia. 1.5 ft3/s of water or 2592 in3/s TO FIND: power…

Q: A stream flowing at 141 ft3/s and have a vertical drop of 16 ft will be used to generate electricity…

A: Given data as per question stream flow rate =141 ft3/s =3.88 m3/s vertical drop =16 ft =4.87 m The…

Q: A gasoline engine is 30% efficient, which means it can transfer 30% of the energy heat provides the…

A: Given : η = 30% m = 0.8 L/hr since 1 hr = 3600 seconds ∴ m = 0.8/3600  L/sec Pc = 3.5*10⁴ kJ/L…

Q: Water is to be pumped from the bottom of a well 20 ft deep with a specific heat of 1 BTU/lbm F is…

A: Calculate the mass flow rate of water. m˙gh=Wm˙9.8120 ft×0.3048 m1 ft=1 hp=746 Wm˙=12.47…

Q: 1- Is there an acceleration for fluid particles in a steady flow? Explain your answer by sketch if…

A: According to our guidelines we are supposed to answer the first question as they are not linked.…

Q: A reciprocating compressor draws in 500 gal per minute of air whose density is 0.079 lbm/cu ft and…

A:

Q: he working fluid is water. There is no heat transfer to or from the water, and the f the water per…

A: Part A:-  Energy Balance Equation is as follows, dmu + gz + V22system = u + gz +V22 indmin-u + gz +…

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.