Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 8, Problem 8.20PP
After the press has run for some time, the lubricating oil described in Problem 8.19 heats to
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4. A special oil is to be used in an absorption tower. The preliminary design of the unit
requires the oil to be pumped from an open tank with a 10 ft liquid level above the floor and
forced through 150 ft of 3 inches schedule 40 pipe with a ball check valve and 5 elbows into
the top of a tower 30 ft above the floor. The operating pressure in the tower is to be 52 psig
and the oil requirement is estimated at 50 gpm. The viscosity of the oil 15 cP and its density
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horsepower input will be required for the pump motor?
Give the isometric configuration of the typical piping system of a pump installation using standard
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Please compute the Reynolds number of an oil (0.8
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inch diameter at a velocity of 6 ft/s. Is this flow laminar
or turbulent?
Chapter 8 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 8 - A 4-in-ductile iron pipe carries 0.20ft3/s of...Ch. 8 - Calculate the minimum velocity of flow in ft/s of...Ch. 8 - Calculate the maximum volume flow rate of fuel oil...Ch. 8 - Calculate the Reynolds number for the flow of each...Ch. 8 - Determine the smallest metric hydraulic copper...Ch. 8 - In an existing installation, SAE 10 oil (sg = 0.89...Ch. 8 - From the data in Appendix C, we can see that...Ch. 8 - Compute the Reynolds number for the flow of 325...Ch. 8 - Benzene (sg = 0.86 ) at 60c C is flowing at 25...Ch. 8 - Hot water at 80 C is flowing to a dishwasher at a...
Ch. 8 - A major water main is an 18 -in ductile iron pipe....Ch. 8 - ]8.12 An engine crankcase contains SAE 10 motor...Ch. 8 - Repeat Problem 8.12 for an oil temperature of 160...Ch. 8 - At approximately what volume flow rate will propyl...Ch. 8 - SAE 30 oil (sg = 0.89 ) is flowing at 45 L/min...Ch. 8 - Repeat Problem 8.15 for an oil temperature of 160...Ch. 8 - Repeat Problem 8.15, except the tube is 50 mm...Ch. 8 - Repeat Problem 8.17 for an oil temperature of 0 C.Ch. 8 - The lubrication system for a punch press delivers...Ch. 8 - After the press has run for some time, the...Ch. 8 - A system is being designed to carry 500 gal/min of...Ch. 8 - The range of Reynolds numbers between 2000 and...Ch. 8 - The water line described in Problem 8.22was a cold...Ch. 8 - In a dairy, milk at 100 F is reported to have a...Ch. 8 - In a soft-drink bottling plant, the concentrated...Ch. 8 - ]8.26 A certain jet fuel has a kinematic viscosity...Ch. 8 - Crude oil is flowing vertically downward through...Ch. 8 - Water at 75 C is flowing in a standard hydraulic...Ch. 8 - Fuel oil is flowing in a 4 -in Schedule 40 steel...Ch. 8 - A 3-in Schedule 40 steel pipe is 5000 ft long and...Ch. 8 - Benzene at 60 C is flowing in a DN 25 Schedule 80...Ch. 8 - As a test to determine the effective wall...Ch. 8 - Water at F flows from a storage tank through ft...Ch. 8 - A water main is an 18 -in-diameter concrete...Ch. 8 - Figure 8.12shows a portion of a fire protection...Ch. 8 - A submersible deep-well pump delivers 745 gal/h of...Ch. 8 - On a farm, water at 60 F is delivered from a...Ch. 8 - Figure 8.15 shows a system for delivering lawn...Ch. 8 - A pipeline transporting crude oil (sg = 0.93 ) at...Ch. 8 - For the pipeline described in Problem 8.39,...Ch. 8 - Water at 10 C flows at the rate of 900 L/min from...Ch. 8 - For the system shown in Fig. 8.17, compute the...Ch. 8 - Fuel oil (sg = 0.94 ) is being delivered to a...Ch. 8 - Figure 8.18 shows a system used to spray polluted...Ch. 8 - In a chemical processing system, the flow of...Ch. 8 - Water at 60 F is being pumped from a stream to a...Ch. 8 - For the pump described in Problem 8.46, if the...Ch. 8 - Gasoline at 50 F flows from point A to point B...Ch. 8 - Figure 8.20 shows a pump recirculating 300 gal/min...Ch. 8 - Linseed oil at 25 C flows at 3.65 in a standard...Ch. 8 - Glycerin at 25 C flows through a straight...Ch. 8 - Water at 75 C flows in a standard hydraulic copper...Ch. 8 - Benzene (sg = 0.88 ) at 60 C, flows in a DN 25...Ch. 8 - Water at 80 F flows in a 6 -in coated ductile iron...Ch. 8 - Water at 50 F flows at 15.0 ft3/s in a concrete...Ch. 8 - Water at 60 F flows at 1500 gal/min in a 10 -in...Ch. 8 - ]8.57 A liquid fertilizer solution (sg = 1.10 )...Ch. 8 - Crude oil (sg = 0.93 ) at 100 C flows at a rate of...Ch. 8 - Water at 65 C flows in a DN 40 Schedule 40 steel...Ch. 8 - Propyl alcohol flows in a standard hydraulic...Ch. 8 - ]3.61 Water at 70 F flows in a 12 -in-diameter...Ch. 8 - Heavy fuel oil at 77 F flows in a 6 -in Schedule...Ch. 8 - Water flows at a rate of 1.50ft3/s through 550 ft...Ch. 8 - Compute the energy loss as water flows in a...Ch. 8 - ]8.65 A water main is an 18 -in-diameter concrete...Ch. 8 - A fire protection system includes 1500 ft of 10...Ch. 8 - ]8.67 A standard hydraulic copper tube, 120 mm...Ch. 8 - Compute the energy loss as 2.0ft3/s of water flows...Ch. 8 - It is desired to flow 2.0ft3/s of water through...Ch. 8 - Specify a suitable size of new, clean Schedule 40...Ch. 8 - For the pipe selected in Problem 8.70, compute the...Ch. 8 - Compare the head loss that would result from the...Ch. 8 - In Problem 6.107, a theoretical flow rate of water...Ch. 8 - A pipeline is needed to transport medium fuel oil...Ch. 8 - Medium fuel oil at 25 C is to be pumped at a flow...Ch. 8 - A tremendous amount of study has gone into the...Ch. 8 - In a given installation, it is determined that the...Ch. 8 - "Laminar" fountains have become quite popular due...Ch. 8 - Use PIPE-FLO to model a straight horizontal run of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 8. In the regenerative circuit shown below, the pump's flow rate is 10 gpm. If the piston diameter is 7 in and the rod diameter is 5 in (not a 2:1 cylinder), calculate the extension speed in in/min. Also calculate the oil flow rate at points A and B in gpm. (recall 1 gal = 231 in') PF The diagram above does not show a working regenerative circuit. What must be added in order for the circuit to be practical and why?arrow_forwardThe head loss due to friction is not proportional to length of the pipe. Select one: True Falsearrow_forwardA shaft has diameter of 120 mm is rotating at a speed of 360 r. p. m inside Journal bearing with diameter of 122 mm the space between the shaft and the bearing is filled with a a Lubricating oil of viscosity (0.6 Pas) find the power absorbed in oil if the length of a bearing is 100 mmarrow_forward
- 1. A fluid is having viscosity of 0.4 Ns/m² and relative density of 900 Kg/m² through a pipe of 25 mm with a velocity of 3 m. Calculate the Reynolds numberarrow_forwardWhen is no-slip condition possible?A. If the flow is external and the velocity is determined near the plate/wall.B. If the flow is uniform in all control volume throughout the pipe.C. If the flow is laminar, and the centerline velocity is constant.D. If the maximum velocity approaches to the average velocity midway the centerline and the wall.arrow_forwardWhen is there a no-slip condition in a flow?a. If the flow is external and the velocity is measured close to the plate/wallb. If the flow is consistent across the pipe's control volume,c. If the flow is laminar and the velocity at the centerline is constant,d. If the maximum velocity approaches the average velocity halfway between the centerline and the wall,arrow_forward
- Pure milk at 293 K has a density of 1030 kg / m3 and a viscosity of 2.12 cp flowing at a rate of 1,605 kg / s in a pipe having a diameter of 70 mm. a. Calculate the Reynolds number. = Answer. b. Is the flow turbulent No, yes.c. The required flow rate for the Reynold 2500 is = Answerm / s.arrow_forwardQuestion1: Calculate the load carrying capacity of a full journal bearing which uses SAE 10 oil whose viscosity in saybolt universal seconds is 200 at 40-9C.The diameter of journal is 36 mm and runs at speed of 1750 rpm with maximum and minimum oil thicknesses of 0.0375 mm and 0.033 mm. Question2: A full journal bearing of L- 75 mm and D-75 mm has, D/c ratio of 1000 and journal rotates at 2000 rpm. The oil viscosity at operating temperature is 0.008 Pa.s. Determine the power loss in friction and surface the temperàture if the bearing operates in still air of temperature 20 °C.arrow_forwardCalculate the volume flow rate of oil from the nozzle and the pressure at point B and D.arrow_forward
- Pure milk at 293 K has a density of 1030 kg / m3 and a viscosity of 2.12 cp flowing at a rate of 2,205 kg / s in a pipe having a diameter of 90 mm. a. Calculate the Reynolds number. = Answer. b. Is the flow turbulent No, yes.c. The flow rate required for Reynold's number 2100 is = Answerm / s.arrow_forwardTable 7.1- values of coefficient of pipe friction (research the table please)arrow_forwardExplain how the pressure and velocity of your fluid change as it travels through the pipe system. Need ASAP. Thank you.arrow_forward
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