EBK ENGINEERING MECHANICS: DYNAMICS, SI
8th Edition
ISBN: 9781119047315
Author: Bolton
Publisher: VST
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Chapter 3.9, Problem 208P
To determine
The time required for the sphere.
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A counter flow double pipe heat exchanger is being used to cool hot oil from 320°F to 285°F
using cold water. The water, which flows through the inner tube, enters the heat exchanger at 70°F
and leaves at 175°F. The inner tube is ¾-std type L copper. The overall heat transfer coefficient
based on the outside diameter of the inner tube is 140 Btu/hr-ft2-°F. Design conditions call for a
total heat transfer duty (heat transfer rate between the two fluids) of 20,000 Btu/hr. Determine the
required length of this heat exchanger (ft).
!
Required information
A one-shell-pass and eight-tube-passes heat exchanger is used to heat glycerin (cp=0.60 Btu/lbm.°F) from 80°F to 140°F
by hot water (Cp = 1.0 Btu/lbm-°F) that enters the thin-walled 0.5-in-diameter tubes at 175°F and leaves at 120°F. The total
length of the tubes in the heat exchanger is 400 ft. The convection heat transfer coefficient is 4 Btu/h-ft²°F on the glycerin
(shell) side and 70 Btu/h-ft²°F on the water (tube) side.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Determine the rate of heat transfer in the heat exchanger before any fouling occurs.
Correction factor F
1.0
10
0.9
0.8
R=4.0 3.0 2.0.15 1.0 0.8.0.6 0.4 0.2
0.7
0.6
R=
T1-T2
12-11
0.5
12-11
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
(a) One-shell pass and 2, 4, 6, etc. (any multiple of 2), tube passes
P=
T₁-11
The rate of heat transfer in the heat exchanger is
Btu/h.
!
Required information
Air at 25°C (cp=1006 J/kg.K) is to be heated to 58°C by hot oil at 80°C (cp = 2150 J/kg.K) in a cross-flow heat exchanger
with air mixed and oil unmixed. The product of heat transfer surface area and the overall heat transfer coefficient is 750
W/K and the mass flow rate of air is twice that of oil.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Air
Oil
80°C
Determine the effectiveness of the heat exchanger.
Chapter 3 Solutions
EBK ENGINEERING MECHANICS: DYNAMICS, SI
Ch. 3.4 - Prob. 1PCh. 3.4 - The 50-kg crate is stationary when the force P is...Ch. 3.4 - At a certain instant, the 80-lb crate has a...Ch. 3.4 - A man pulls himself up the 15° incline by the...Ch. 3.4 - The 10-Mg truck hauls the 20-Mg trailer. If the...Ch. 3.4 - A 60-kg woman holds a 9-kg package as she stands...Ch. 3.4 - During a brake test, the rear-engine car is...Ch. 3.4 - Prob. 8PCh. 3.4 - The inexperienced driver of an all-wheel-drive car...Ch. 3.4 - Prob. 10P
Ch. 3.4 - The 300-Mg jet airliner has three engines, each of...Ch. 3.4 - Prob. 12PCh. 3.4 - The system of the previous problem is now placed...Ch. 3.4 - Prob. 14PCh. 3.4 - Prob. 15PCh. 3.4 - Prob. 16PCh. 3.4 - Prob. 17PCh. 3.4 - Prob. 18PCh. 3.4 - A worker develops a tension T in the cable as he...Ch. 3.4 - The wheeled cart of Prob. 3/19 is now replaced...Ch. 3.4 - Prob. 21PCh. 3.4 - Prob. 22PCh. 3.4 - Prob. 23PCh. 3.4 - Prob. 24PCh. 3.4 - Prob. 25PCh. 3.4 - Prob. 26PCh. 3.4 - Prob. 27PCh. 3.4 - Prob. 28PCh. 3.4 - Prob. 29PCh. 3.4 - Prob. 30PCh. 3.4 - Prob. 31PCh. 3.4 - Prob. 32PCh. 3.4 - Prob. 33PCh. 3.4 - Prob. 34PCh. 3.4 - Prob. 35PCh. 3.4 - Prob. 36PCh. 3.4 - Prob. 37PCh. 3.4 - Prob. 38PCh. 3.4 - Prob. 39PCh. 3.4 - Prob. 40PCh. 3.4 - Prob. 41PCh. 3.4 - Prob. 42PCh. 3.4 - Prob. 43PCh. 3.4 - Prob. 44PCh. 3.4 - Prob. 45PCh. 3.4 - Two iron spheres, each of which is 100 mm in...Ch. 3.5 - The small 2-kg block A slides down the curved path...Ch. 3.5 - If the 2-kg block passes over the top B of the...Ch. 3.5 - Prob. 49PCh. 3.5 - If the 180-lb ski-jumper attains a speed of 80...Ch. 3.5 - The 4-oz slider has a speed v = 3 ft/sec as it...Ch. 3.5 - Prob. 52PCh. 3.5 - Prob. 53PCh. 3.5 - Determine the speed which the 630-kg four-man...Ch. 3.5 - The hollow tube is pivoted about a horizontal axis...Ch. 3.5 - Prob. 56PCh. 3.5 - Prob. 57PCh. 3.5 - Prob. 58PCh. 3.5 - Prob. 59PCh. 3.5 - Prob. 60PCh. 3.5 - The standard test to determine the maximum lateral...Ch. 3.5 - Prob. 62PCh. 3.5 - Prob. 63PCh. 3.5 - Prob. 64PCh. 3.5 - Prob. 65PCh. 3.5 - A 0.2-kg particle P is constrained to move along...Ch. 3.5 - Prob. 67PCh. 3.5 - At the instant under consideration, the cable...Ch. 3.5 - Prob. 69PCh. 3.5 - The slotted arm OA rotates about a fixed axis...Ch. 3.5 - Prob. 71PCh. 3.5 - Prob. 72PCh. 3.5 - Prob. 73PCh. 3.5 - Prob. 74PCh. 3.5 - Prob. 75PCh. 3.5 - Prob. 76PCh. 3.5 - Prob. 77PCh. 3.5 - The 0.1-lb projectile A is subjected to a drag...Ch. 3.5 - Determine the speed v at which the race car will...Ch. 3.5 - The small object is placed on the inner surface of...Ch. 3.5 - The small object of mass m is placed on the...Ch. 3.5 - Prob. 82PCh. 3.5 - The slotted arm revolves in the horizontal plane...Ch. 3.5 - Beginning from rest when , a 35-kg child slides...Ch. 3.5 - A small coin is placed on the horizontal surface...Ch. 3.5 - The rotating drum of a clothes dryer is shown in...Ch. 3.5 - Prob. 87PCh. 3.5 - Prob. 88PCh. 3.5 - Prob. 89PCh. 3.5 - Prob. 90PCh. 3.5 - Prob. 91PCh. 3.5 - Prob. 92PCh. 3.5 - Prob. 93PCh. 3.5 - The slotted arm OB rotates in a horizontal plane...Ch. 3.5 - Prob. 95PCh. 3.5 - Prob. 96PCh. 3.6 - The spring is unstretched at the position x = 0....Ch. 3.6 - Prob. 98PCh. 3.6 - Prob. 99PCh. 3.6 - Prob. 100PCh. 3.6 - Prob. 101PCh. 3.6 - The small 0.1-kg slider enters the “loop-the-loop”...Ch. 3.6 - Prob. 103PCh. 3.6 - Prob. 104PCh. 3.6 - Prob. 105PCh. 3.6 - Prob. 106PCh. 3.6 - Prob. 107PCh. 3.6 - Prob. 108PCh. 3.6 - Prob. 109PCh. 3.6 - Prob. 110PCh. 3.6 - Prob. 111PCh. 3.6 - Prob. 112PCh. 3.6 - Prob. 113PCh. 3.6 - Prob. 114PCh. 3.6 - Prob. 115PCh. 3.6 - Prob. 116PCh. 3.6 - Prob. 117PCh. 3.6 - Prob. 118PCh. 3.6 - Prob. 119PCh. 3.6 - Prob. 120PCh. 3.6 - Prob. 121PCh. 3.6 - Prob. 122PCh. 3.6 - Prob. 123PCh. 3.6 - Prob. 124PCh. 3.6 - Two 425,000-lb locomotives pull fifty 200,000-lb...Ch. 3.6 - Prob. 126PCh. 3.6 - Prob. 127PCh. 3.6 - Prob. 128PCh. 3.6 - Prob. 129PCh. 3.6 - The system is released from rest with no slack in...Ch. 3.6 - Prob. 131PCh. 3.6 - Prob. 132PCh. 3.6 - Prob. 133PCh. 3.6 - Prob. 134PCh. 3.6 - The 6-kg cylinder is released from rest in the...Ch. 3.6 - Prob. 136PCh. 3.6 - Extensive testing of an experimental 2000-lb...Ch. 3.6 - The vertical motion of the 50-lb block is...Ch. 3.7 - Prob. 139PCh. 3.7 - Prob. 140PCh. 3.7 - Prob. 141PCh. 3.7 - Prob. 142PCh. 3.7 - Prob. 143PCh. 3.7 - Prob. 144PCh. 3.7 - Prob. 145PCh. 3.7 - Prob. 146PCh. 3.7 - Prob. 147PCh. 3.7 - Prob. 148PCh. 3.7 - The particle of mass m = 1.2 kg is attached to the...Ch. 3.7 - The 10-kg collar slides on the smooth vertical rod...Ch. 3.7 - The system is released from rest with the spring...Ch. 3.7 - The two wheels consisting of hoops and spokes of...Ch. 3.7 - Prob. 154PCh. 3.7 - The two 1.5-kg spheres are released from rest and...Ch. 3.7 - Prob. 156PCh. 3.7 - Prob. 157PCh. 3.7 - Prob. 158PCh. 3.7 - The small bodies A and B each of mass m are...Ch. 3.7 - Prob. 160PCh. 3.7 - Prob. 161PCh. 3.7 - Prob. 162PCh. 3.7 - Prob. 163PCh. 3.7 - A satellite is put into an elliptical orbit around...Ch. 3.7 - Prob. 165PCh. 3.7 - Prob. 166PCh. 3.7 - Prob. 167PCh. 3.7 - Prob. 168PCh. 3.7 - Prob. 169PCh. 3.7 - Prob. 170PCh. 3.7 - Prob. 171PCh. 3.7 - Prob. 172PCh. 3.9 - A 0.2-kg wad of clay is released from rest and...Ch. 3.9 - Prob. 174PCh. 3.9 - Prob. 175PCh. 3.9 - Prob. 176PCh. 3.9 - Prob. 177PCh. 3.9 - Prob. 178PCh. 3.9 - Careful measurements made during the impact of the...Ch. 3.9 - Prob. 180PCh. 3.9 - Prob. 181PCh. 3.9 - Prob. 182PCh. 3.9 - Crate A is traveling down the incline with a speed...Ch. 3.9 - The 15 200-kg lunar lander is descending onto the...Ch. 3.9 - A boy weighing 100 lb runs and jumps on his 20-lb...Ch. 3.9 - The snowboarder is traveling with a velocity of 6...Ch. 3.9 - Prob. 187PCh. 3.9 - Prob. 188PCh. 3.9 - Prob. 189PCh. 3.9 - Prob. 190PCh. 3.9 - Prob. 191PCh. 3.9 - Prob. 192PCh. 3.9 - Prob. 193PCh. 3.9 - Prob. 194PCh. 3.9 - All elements of the previous problem remain...Ch. 3.9 - Prob. 196PCh. 3.9 - Prob. 197PCh. 3.9 - Prob. 198PCh. 3.9 - The hydraulic braking system for the truck and...Ch. 3.9 - The 100-lb block is stationary at time t = 0, and...Ch. 3.9 - Prob. 201PCh. 3.9 - Prob. 202PCh. 3.9 - Prob. 203PCh. 3.9 - Prob. 204PCh. 3.9 - Prob. 205PCh. 3.9 - Prob. 206PCh. 3.9 - Prob. 207PCh. 3.9 - The 1.2-lb sphere is moving in the horizontal x-y...Ch. 3.9 - Prob. 209PCh. 3.9 - A tennis player strikes the tennis ball with her...Ch. 3.9 - Prob. 211PCh. 3.9 - Prob. 212PCh. 3.9 - Prob. 213PCh. 3.9 - Prob. 214PCh. 3.10 - Determine the magnitude HO of the angular momentum...Ch. 3.10 - Prob. 216PCh. 3.10 - Prob. 217PCh. 3.10 - Prob. 218PCh. 3.10 - Prob. 219PCh. 3.10 - Prob. 220PCh. 3.10 - Prob. 221PCh. 3.10 - Prob. 222PCh. 3.10 - Prob. 223PCh. 3.10 - Prob. 224PCh. 3.10 - Prob. 225PCh. 3.10 - Prob. 226PCh. 3.10 - Prob. 227PCh. 3.10 - Prob. 228PCh. 3.10 - Prob. 229PCh. 3.10 - Prob. 230PCh. 3.10 - A wad of clay of mass m1 with an initial...Ch. 3.10 - Prob. 232PCh. 3.10 - Prob. 233PCh. 3.10 - A particle moves on the inside surface of a smooth...Ch. 3.10 - Prob. 235PCh. 3.10 - Prob. 236PCh. 3.10 - Prob. 237PCh. 3.10 - Prob. 238PCh. 3.10 - Prob. 239PCh. 3.10 - Prob. 240PCh. 3.12 - Prob. 241PCh. 3.12 - Compute the final velocities v1′ and v2′ after...Ch. 3.12 - Prob. 243PCh. 3.12 - Prob. 244PCh. 3.12 - Prob. 245PCh. 3.12 - Prob. 246PCh. 3.12 - Prob. 247PCh. 3.12 - Prob. 248PCh. 3.12 - Prob. 249PCh. 3.12 - If the center of the ping-pong ball is to clear...Ch. 3.12 - Prob. 251PCh. 3.12 - Prob. 252PCh. 3.12 - Prob. 253PCh. 3.12 - Prob. 254PCh. 3.12 - Prob. 255PCh. 3.12 - A 0.1-kg meteor and a 1000-kg spacecraft have the...Ch. 3.12 - In a pool game the cue ball A must strike the...Ch. 3.12 - Prob. 258PCh. 3.12 - Prob. 259PCh. 3.12 - Prob. 260PCh. 3.12 - Prob. 261PCh. 3.12 - Prob. 262PCh. 3.12 - Prob. 263PCh. 3.12 - Prob. 264PCh. 3.12 - Prob. 265PCh. 3.12 - Prob. 266PCh. 3.12 - The 2-kg sphere is projected horizontally with a...Ch. 3.12 - Prob. 268PCh. 3.12 - Prob. 269PCh. 3.12 - Prob. 270PCh. 3.12 - Prob. 271PCh. 3.12 - Prob. 272PCh. 3.12 - Prob. 273PCh. 3.12 - Prob. 274PCh. 3.12 - Prob. 275PCh. 3.12 - Prob. 276PCh. 3.12 - Prob. 277PCh. 3.12 - Prob. 278PCh. 3.12 - Determine the speed v required of an earth...Ch. 3.12 - Prob. 280PCh. 3.12 - Prob. 281PCh. 3.12 - Prob. 282PCh. 3.12 - Prob. 283PCh. 3.12 - Prob. 284PCh. 3.12 - Prob. 285PCh. 3.12 - Compute the magnitude of the necessary launch...Ch. 3.12 - Prob. 287PCh. 3.12 - Prob. 288PCh. 3.12 - Prob. 289PCh. 3.12 - Prob. 290PCh. 3.12 - Prob. 291PCh. 3.12 - Prob. 292PCh. 3.12 - The perigee and apogee altitudes above the surface...Ch. 3.12 - Prob. 294PCh. 3.12 - Prob. 295PCh. 3.12 - Prob. 296PCh. 3.12 - Prob. 297PCh. 3.12 - Prob. 298PCh. 3.12 - Prob. 299PCh. 3.12 - Prob. 300PCh. 3.15 - Prob. 301RPCh. 3.15 - Prob. 302RPCh. 3.15 - Prob. 303RPCh. 3.15 - Prob. 304RPCh. 3.15 - Prob. 305RPCh. 3.15 - Prob. 306RPCh. 3.15 - Prob. 307RPCh. 3.15 - Prob. 308RPCh. 3.15 - Prob. 309RPCh. 3.15 - The slider A has a mass of 2 kg and moves with...Ch. 3.15 - Prob. 311RPCh. 3.15 - Prob. 312RPCh. 3.15 - Prob. 313RPCh. 3.15 - Prob. 314RPCh. 3.15 - A ball is released from rest relative to the...Ch. 3.15 - The small slider A moves with negligible friction...Ch. 3.15 - Prob. 317RPCh. 3.15 - Prob. 318RPCh. 3.15 - Prob. 319RPCh. 3.15 - Prob. 320RPCh. 3.15 - Prob. 321RPCh. 3.15 - The simple 2-kg pendulum is released from rest in...Ch. 3.15 - Prob. 323RPCh. 3.15 - Prob. 324RPCh. 3.15 - Prob. 325RPCh. 3.15 - Prob. 326RPCh. 3.15 - Prob. 327RPCh. 3.15 - Six identical spheres are arranged as shown in the...Ch. 3.15 - Prob. 329RPCh. 3.15 - Prob. 330RPCh. 3.15 - Prob. 331RPCh. 3.15 - Prob. 332RPCh. 3.15 - Prob. 333RPCh. 3.15 - Prob. 334RPCh. 3.15 - Prob. 335RPCh. 3.15 - Prob. 336RPCh. 3.15 - Prob. 337RPCh. 3.15 - Prob. 338RPCh. 3.15 - Prob. 339RPCh. 3.15 - The bungee jumper, an 80-kg man, falls from the...Ch. 3.15 - Prob. 341RPCh. 3.15 - Prob. 342RPCh. 3.15 - Prob. 343RPCh. 3.15 - Prob. 344RPCh. 3.15 - Prob. 345RPCh. 3.15 - Prob. 346RPCh. 3.15 - Prob. 347RPCh. 3.15 - Prob. 348RPCh. 3.15 - Prob. 349RPCh. 3.15 - Prob. 350RPCh. 3.15 - The tennis player practices by hitting the ball...Ch. 3.15 - A particle of mass m is introduced with zero...Ch. 3.15 - The system of Prob. 3/166 is repeated here. The...
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Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Dynamics - Lesson 1: Introduction and Constant Acceleration Equations; Author: Jeff Hanson;https://www.youtube.com/watch?v=7aMiZ3b0Ieg;License: Standard YouTube License, CC-BY