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Description: [I asked this question previously, but the responce was incorrect]I was advised to input equations (smooth tubes : f=0.790 ln Re - 1.64)^2 3000<Re<5x10^6 and Nu=0.125(Re)(Pr)^1/3 In the effort to find the best way to cool a smooth thin-walled coppe

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Mechanical Engineering

[I asked this question previously, but the responce was incorrect] I was advised to input equations (smooth tubes : f=0.790 ln Re - 1.64)^2 3000

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.1P: 7.1 To measure the mass flow rate of a fluid in a laminar flow through a circular pipe, a...

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he night-time chilled water system is not a closed loop system, meaning that some amount of water is lost due to evaporation every night. If it is 96% efficient (i.e. 4% of the water flow rate is dispersed to the outdoor air and needs to be replaced), how much make up water does it need to draw from the municipal water supply daily (in gallons)? Round to nearest integer. (Given: Qheat loss = 1,500,000 Btu) Total gallons in water tank: 1500 gallons//system runs: 10 hours
A-Given that the volumetric flow rate for a fluid within a circular cross-section tube can be represented by #HAP 8pL Q where r is the tube radius, u is the fluid viscosity, P is the pressure drop across the tube, and L is the tube length, calculate the pressure drop across a tube of length 1 m and diameter of 23 mm. The fluid is blood (μ = 0.0035 N.s/m²) and has a volumetric flow rate of 4.5 L/min. Assuming the same conditions, what would the required pressure drop be for water (u= 0.001 N.s/m²) and chocolate syrup (u = 150 N.s/m²).
My Questions | Answered: MEC x A simply suppor C Search Textbool /ethuto.cut.ac.za/ultra/courses/_9063_1/cl/outline • Question Completion Status: The temperture radius The vo throu and 62 of a pipe with inner and outer radius r, are given by 12 In() 2 nkL and 82 Incr2 %3D 2 пkL i=1(e where Q is the heat transfer rate, L is the length Where the er tempe Evalua of the pipe and k is thermal conductivity. Making Q the subject of the formula gives A In(r)-In(r2) 2nkL (6,-02) n=2, в 2пkL (0,— в) In (r-r2) 2 nk L(8-82) gives 61. C Incr)-Incr2) B 1.6 C 0.6 D None of the above is correct D No O A Option A is correct OB. Option R is correct
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
Question B2 - Internal Flow 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. a) Calculate the Reynolds number of the water in the pipe and determine if it is laminar or turbulent. b) Calculate the pressure loss from friction, change in elevation, and hence the pressure of the water just before entering the tap. c) to part b) and state if these assumptions under or over predict the pressure of the water just before entering the tap. Name two assumptions that have been made in order to arrive at your answer
Question B2 - Internal Flow 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?
i need clear ans by hand and solve very very fast in 20 min and thank you | DYBALARE Water (p= 990 kg/m³ & μ= 0.0013 Pa.s) is pumping from an atmospheric water tank to water injection well with carbon steel pipe has same level, where the discharge pipe diameter is 12 inch, pipe length is 4700 m, pipe roughness is 0.045 mm, and water flow rate is 0.065 m³/sec. 1900.2 +30.3 1- Calculate discharge head, if the pressure at water injection well is 190 bar. 2- Calculate pump liquid power, if pump section head value is 3.8 m. 10000 Dh=1900
) where AP is the static The Hagen-Poiseuille equation for the laminar flow through a circular pipe is: AP pressure drop measured over some length of pipe, L. Use the Hagen-Poiseuille equation and the Darcy-Weisbach equation to derive an expression for the fanning friction factor, f, for laminar flow through a circular pipe where Re is the Reynolds number. Choose one answer from the list below: of= of O None of the above 32 Re 16 Re O f = 64 Re = o f = 32μLc 3 d² 8 Re O f = 16 Re
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'
##About industrial piping Design a simple and hypothetical piping system that connects equipment (consumers) and that has at least two branches with different diameters from the main branch. The system must have: A brief description of the system, with the types of energy sources (reservoir, tanks, compressor, boiler, pump...) and which consumers (heat exchangers, tanks, vessels, machines...); Indicate the proper location for the installation of the RELIEF VALVES, DRAINS, VENTS and FLOW VALVES; Indicate the TAGs of the equipment, valves, pipes and devices installed; Define basic operating conditions (temperature, minimum and maximum operating pressure, fluid); Define the basic physical conditions (pipe diameter, material specification); Set the maximum design pressure, to be considered as the MAOP (old and hot). Based on the developed piping system Estimate the corrosion allowance for the system (20 years); Calculate the minimum thickness for the pipes; Inform what the…
7.1 To measure the mass flow rate of a fluid in a laminar flow through a circular pipe, a hot-wire-type velocity meter is placed in the center of the pipe. Assuming that the measuring station is far from the entrance of the pipe, the velocity distribution is parabolic: where is the centerline velocity (r = 0), r is the radial distance from the pipe centerline, and D is the pipe diameter. Derive an expression for the average fluid velocity at the cross section in terms of and D. (b) Obtain an expression for the mass flow rate. (c) If the fluid is mercury at , D = 10 cm, and the measured value of is 0.2 cm/s, calculate the mass flow rate from the measurement.
A simply supported E C Search Textbook Solu My Questions | bartle s://ethuto.cut.ac.za/ultra/courses/_9063_1/cl/outline v Question Completion Status: The temperture e, radius The thro and of a pipe with inner 02 and outer radius are given by -In () 2 пkL and ®2 = Incr2) 2 пkL i= 1 whe where Q is the heat transfer rate, L is the length the of the pipe and k is thermal conductivity. tem The answer of e,-02 Mak A In 2 пkL A 12 01-02: In (r-r2) 2 пkL | 2 In 2 пkL C C D None of the above is correct V D N A. Option A is correct S. B.