In a large student house in Sheffield, cold water is supplied by the mains water supply at a pressure of 2 bar, gauge, and at a temperature 10°C. A wash basin cold tap is located 3 meters above the mains supply, connected to the mains pipe with a copper pipe of internal diameter 15 mm and length 12 meters. When the tap is opened the flow rate of water out of the tap is 24 litres per minute, creating a Fanning friction factor in the pipe of 0.008. d) If the value were not given, what procedure would be needed to determine the Fanning friction factor?

In a large student house in Sheffield, cold water is supplied by the mains water supply at a pressure of 2 bar, gauge, and at a temperature 10°C. A wash basin cold tap is located 3 meters above the mains supply, connected to the mains pipe with a copper pipe of internal diameter 15 mm and length 12 meters. When the tap is opened the flow rate of water out of the tap is 24 litres per minute, creating a Fanning friction factor in the pipe of 0.008. d) If the value were not given, what procedure would be needed to determine the Fanning friction factor?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Water is to be pumped to an atmospheric rooftop storage tank atop a 5-story building, 75 feet above ground-level. A pump station is located at the ground-level. The suction line is a 2-inch ID commercial steel pipe tapped into a municipal supply line maintained at 50 PSIG 5 feet below ground-level. The discharge line is 1.5-inch ID commercial steel, and the total length of pipe is approximately 100 ft. There are two ball valves, a water meter, and gate valve on the discharge line. Determine the pump head required to deliver 40 GPM and the pump power that must be supplied to the water. If a pump is required, what is the motor power required if the pump operates at 55% efficiency?
Plot curves on a single plot that display the relationship between the pressure generated by thepump as a function of flow rate of water at 20 °C through the three branches of the piping systemshown below (delta P on the y axis and flow rate on the x axis; therange of the pressure as 0 to ~1 MPa). Pipe inner diameter: 0.0254 mPipe material: copperTypical mass flow rate of interest: 0.5 kg/sIgnore minor losses of tee's at points A and B and any features of branch 3Consider minor losses of two 90° elbows in branch 2
long. The inlet water temperature is 10 C, and the tube wall temperature is 15 C water temperature. k 0.585, Pr= 9.4, u= 1.31x10*,p= 992kg/m, CP= 4195 j/kg. higher than the water temperature all along the length of the tube. What is the exit %3D Q5//answer one of the following branches e jall al je yal A) cast iron pipe (k=75w/m. °C) air flows inside this pipe at 300°C the inner diameter is 0.06 m, the outer diameter 7cm,it is covered with insulation type glass wool with thick 4cm. with k= 0.055w/m.°C .the ambient temperature 6 °C by free V3. convection with heat transfer coefficient (20w/m2. °C) the heat transfer inside the pipe is 65 w/m?. °C. length of tube (L-2) determine 1-the heat lost from the hot air 2-the temperature drop across the pipe shell 3-the temperature drop across the insulation. 344 14. 1256 and B) Fill the blanks: of the 1. The thermal resistance of a medium depends on medium. 2 All law. pes of convection are governed by 10000, the flow is
hot tand col lectat 10m 1.50 075 cold 0.50 30 2 34 36 it do temp (deg C) In the above thermosyphon system, cold water at 30° enters the system and gets heated to 36° C by the flat plate collector. The length of the pipe ( ab = cd) is 2.5 m and has a diameter of 150 mm. i) ii) Calculate the friction head for this system Calculate the flow speed. The expansion coefficient of water B= 3.5 x 10* K". soler imadice, G
A saturated steam at 410K is being transported in a pipeline (brass drawing tubing) at a rate of 1 grams/second. Pipe has inside diameter of 0.025 m . The tube is 100m long. The pressure at the entrance is 80kPa. (use Perry's Handbook for the properties and constants) R = 8314J/kgmol.K; MW=18.02g/mol What is the a.) value of G in kg/s.m2? b.)value of friction factor? 3 significant figures c.)the % of pressure drop? d.)the outlet pressure? e.) compressible or not?
Problem # 3: Friction losses and volumetric discharge through a water piping system The cold-water faucet in a house is fed from a main water line through the following simplified piping system: A. A 160 ft long ¾ in ID copper pipe leading from the main line to the faucet base B. Six 90° standard elbows C. One wide-open angle valve with no obstruction D. The faucet which is considered to be composed of twd parts: 1) a half-open globe valve and 2) a nozzle having a diameter of 0.10 in. The pressure in the main line is 60 psig (virtually independent of flow) and the velocity there is negligible. At the faucet, the pressure is atmospheric. Assume the density of water to be 62.4 lbm/ft and the kinematic viscosity of water is 1.22 ×10³ ft²/s. Find the maximum volumetric flow rate of discharge from the faucet. This is trial and error problem. For a first trial, assume the Fanning friction factor to be 0.007. Use 5×106 ft for copper roughness. Neglect changes in elevation throughout the…
the pressurt the pump. 2.10-10. Flow in an Annulus and Pressure Drop. Water flows in the annulus of a hori- zontal, concentric-pipe heat exchanger and is being heated from 40°C to 50°C in the exchanger which has a length of 30 m of equivalent straight pipe. The flow rate of the water is 2.90 x 10 3m/s. The inner pipe is 1-in. schedule 40 and the outer is 2-in. schedule 40. What is the pressure drop? Use an average temper- ature of 45°C for bulk physical properties. Assume that the wall temperature is an average of 4°C higher than the average bulk temperature so that a correction can be made for the effect of heat transfer on the friction factor. ompnongibia Flow Starting with
6- The following reading were taken during a test on a surface condenser: Mean condenser temperature = 35°C Hot well temperature = 30°C Condenser vacuum = 69 cm Hg Barometer reading = 76cmHg Condensation rate = 16 kg/min Cooling water temperature inter = 20 °C Cooling water temperature outlet = 32.5 °C Flow rate being = 37500 kg/h Calculate: a- mass of air present per cubic meter of condenser b- quality of steam at condenser inlet c- vacuum efficiency d- condenser efficiency (condenser heat transfer effeteness)
Example -5.2- It is required to pump cooling water from storage pond to a condenser in a process plant situated 10 m above the level of the pond. 200 m of 74.2 mm i.d. pipe is available and the pump has the characteristics given below. The head loss in the condenser is equivalent to 16 velocity heads based on the flow in the 74.2 mm pipe. If the friction factor = 0.003, estimate the rate of flow and the power to be supplied to the pump assuming n = 0.5 Q (m³/s) 0.0028 0.0039 0.005 0.0056 0.0059 Ah (m) 23.2 21.3 18.9 15.2 11.0
(Q1) A small reservoir based plant is planned in a remote location to supply water into a micro turbine to generate electricity. The height of water level in reservoir is 10 m. The micro turbine is to be located at ground level at a distance of 200 m from the reservoir. To generate sufficient power, the minimum head (total head) required at the turbine inlet is 9 m with the flow rate of 0.4 m3/s. The loss coefficient (KL) at the inlet to the pipe from reservoir is calculated as 0.4. Determine the minimum diameter of the cast iron pipe (roughness, e = 0.26 mm) required for the proposed design. Take following properties of the fluid: density (EGL). 1000 kg/m3, viscosity = 0.001 kg/m-s. Draw hydraulic grade line (HGL) and energy grade line Reservoir H = 10 m Inlet, K, = 0.4 Pipe Turbine 200 m
2. An oil has 0.62 inch steel tube, through which flows an oil. The properties of of oil are as follows; u = 0.034 %3D lbs lbs lbs ub = 0.044 Uw ft-sec' = 0.004 and specific gravity at 60 °F IS 0.899. The oil enters at a ft-sec' ft-sec temperature of t = 60°F and flows with an average velocity of 4 feet per seconr. The inside surface area is 0.1613 ft? per feet length, and the inside sectional area is 0.3019 in?. The length of one pass of the tube is 10 feet. Condensing steam at 215°F surround the tubes. Assume that the inside surfa ce temperature of the pipe is 210°F and a bulk temperature of 72°F. If the specific heat of oil is 0.5 btu i nd its conductivity k 0.08 lbs- F btu-ft what is the temperature at the end of 10 feet pass? hr-°F-ft2'
Subject : Thermofluid Question : Air at 20oC flows in a 0.60 m diameter pipe at a rate of 15 m3/s as shown in Figure 3. The pipe diameter changes to 1.2 m through a sudden expansion. i. Assess the pressure rise across this expansion. ii. Explain how there can be a pressure rise across the expansion when there is an energy loss (KL ≠ 0).