EP MODIFIED MASTERING ENGINEERING WITH
14th Edition
ISBN: 9780133941357
Author: HIBBELER
Publisher: PEARSON CO
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Chapter 2.9, Problem 112P
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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 2 Solutions
EP MODIFIED MASTERING ENGINEERING WITH
Ch. 2.3 - In each case, construct the parallelogram law to...Ch. 2.3 - In each case, show how to resolve the force F into...Ch. 2.3 - Determine the magnitude of the resultant force...Ch. 2.3 - Two forces act on the hook. Determine the...Ch. 2.3 - Determine the magnitude of the resultant force and...Ch. 2.3 - Resolve the 30-lb force into components along the...Ch. 2.3 - The force F = 450 lb acts on the frame. Resolve...Ch. 2.3 - If force F is to have a component along the u axis...Ch. 2.3 - If = 60 and F = 450 N, determine the magnitude of...Ch. 2.3 - If the magnitude of the resultant force is to be...
Ch. 2.3 - Determine the magnitude of the resultant force FR...Ch. 2.3 - The vertical force F acts downward at A on the...Ch. 2.3 - Solve with F = 350 lb. Prob. 2-4/5Ch. 2.3 - Determine the magnitude of the resultant force FR...Ch. 2.3 - Resolve the force F1 into components acting along...Ch. 2.3 - Resolve the force F2 into components acting along...Ch. 2.3 - If the resultant force acting on the support is to...Ch. 2.3 - Determine the magnitude of the resultant force and...Ch. 2.3 - The plate is subjected to the two forces at A and...Ch. 2.3 - Determine the angle for connecting member A to...Ch. 2.3 - The force acting on the gear tooth is F = 20lb....Ch. 2.3 - The component of force F acting along line aa is...Ch. 2.3 - Force F acts on the frame such that its component...Ch. 2.3 - Force F acts on the frame such that its component...Ch. 2.3 - Determine the magnitude and direction of the...Ch. 2.3 - Determine the magnitude and direction of the...Ch. 2.3 - Determine the design angle (0 90) for strut AB...Ch. 2.3 - Determine the design angle (0 90) between...Ch. 2.3 - Determine the magnitude and direction of the...Ch. 2.3 - Prob. 22PCh. 2.3 - Prob. 23PCh. 2.3 - Prob. 24PCh. 2.3 - If F1 = 30 lb and F2 = 40 lb, determine the angles...Ch. 2.3 - Determine the magnitude and direction of FA SO...Ch. 2.3 - Determine the magnitude and direction, measured...Ch. 2.3 - Determine the magnitude of force F so that the...Ch. 2.3 - If the resultant force of the two tugboats is 3...Ch. 2.3 - If FB = 3 kN and = 45, determine the magnitude of...Ch. 2.3 - If the resultant force of the two tugboats is...Ch. 2.4 - Resolve each force acting on the post into its x...Ch. 2.4 - Determine the magnitude and direction of the...Ch. 2.4 - Prob. 9FPCh. 2.4 - If the resultant force acting on the bracket is to...Ch. 2.4 - If the magnitude of the resultant force acting on...Ch. 2.4 - Determine the magnitude of the resultant force and...Ch. 2.4 - Determine the magnitude of the resultant force and...Ch. 2.4 - Prob. 33PCh. 2.4 - Prob. 34PCh. 2.4 - Determine the magnitude of the resultant force and...Ch. 2.4 - Resolve each force acting on the gusset plate into...Ch. 2.4 - Determine the magnitude of the resultant force...Ch. 2.4 - Prob. 38PCh. 2.4 - Prob. 39PCh. 2.4 - Determine the magnitude of the resultant force and...Ch. 2.4 - Determine the magnitude of the resultant force and...Ch. 2.4 - Express F1, F2, and F3 as Cartesian vectors.Ch. 2.4 - Prob. 43PCh. 2.4 - Prob. 44PCh. 2.4 - Prob. 45PCh. 2.4 - Determine the magnitude and orientation of FB so...Ch. 2.4 - Determine the magnitude and orientation. measured...Ch. 2.4 - Prob. 48PCh. 2.4 - Prob. 49PCh. 2.4 - Express F1, F2, and F3 as Cartesian vectors.Ch. 2.4 - Prob. 51PCh. 2.4 - Prob. 52PCh. 2.4 - Prob. 53PCh. 2.4 - Prob. 54PCh. 2.4 - Prob. 55PCh. 2.4 - Prob. 56PCh. 2.4 - If the resultant force acting on the bracket is...Ch. 2.4 - Prob. 58PCh. 2.4 - If F = 5 kN and = 30, determine the magnitude of...Ch. 2.6 - Sketch the following forces on the x, y, z...Ch. 2.6 - In each case, establish F as a Cartesian vector,...Ch. 2.6 - Show how to resolve each force into its x, y, z...Ch. 2.6 - Determine the coordinate direction angles of the...Ch. 2.6 - Prob. 14FPCh. 2.6 - Prob. 15FPCh. 2.6 - Prob. 16FPCh. 2.6 - Prob. 17FPCh. 2.6 - Prob. 18FPCh. 2.6 - The force F has a magnitude of 80 lb and acts...Ch. 2.6 - Prob. 61PCh. 2.6 - Prob. 62PCh. 2.6 - Prob. 63PCh. 2.6 - Prob. 64PCh. 2.6 - The screw eye is subjected to the two forces...Ch. 2.6 - Prob. 66PCh. 2.6 - Determine the magnitude and coordinate direction...Ch. 2.6 - Determine the magnitude and coordinate direction...Ch. 2.6 - Determine the magnitude and coordinate direction...Ch. 2.6 - Determine the magnitude and coordinate direction...Ch. 2.6 - Specify the magnitude and coordinate direction...Ch. 2.6 - Prob. 72PCh. 2.6 - Prob. 73PCh. 2.6 - Prob. 74PCh. 2.6 - Prob. 75PCh. 2.6 - Prob. 76PCh. 2.6 - Prob. 77PCh. 2.6 - Prob. 78PCh. 2.6 - Determine the coordinate direction angles of the...Ch. 2.6 - The bracket is subjected to the two forces shown....Ch. 2.6 - Prob. 81PCh. 2.6 - Prob. 82PCh. 2.6 - If the direction of the resultant force acting on...Ch. 2.6 - Prob. 84PCh. 2.6 - The pole is subjected to the force F which has...Ch. 2.8 - In each case, establish a position vector from...Ch. 2.8 - In each case, express F as a Cartesian vector....Ch. 2.8 - Express the position vector rAB in Cartesian...Ch. 2.8 - Prob. 20FPCh. 2.8 - Express the force as a Cartesian vector. Prob....Ch. 2.8 - Prob. 22FPCh. 2.8 - Prob. 23FPCh. 2.8 - Prob. 24FPCh. 2.8 - Determine the length of the connecting rod AB by...Ch. 2.8 - Express force F as a Cartesian vector; then...Ch. 2.8 - Prob. 88PCh. 2.8 - Prob. 89PCh. 2.8 - Prob. 90PCh. 2.8 - Prob. 91PCh. 2.8 - Prob. 92PCh. 2.8 - If FB = 560 N and FC = 700 N, determine the...Ch. 2.8 - If FB = 700 N, and FC = 560 N, determine the...Ch. 2.8 - The plate is suspended using the three cables...Ch. 2.8 - The three supporting cables exert the forces shown...Ch. 2.8 - Determine the magnitude and coordinate direction...Ch. 2.8 - Prob. 98PCh. 2.8 - Prob. 99PCh. 2.8 - Prob. 100PCh. 2.8 - The two mooring cables exert forces on the stern...Ch. 2.8 - Prob. 102PCh. 2.8 - Determine the magnitude and coordinate direction...Ch. 2.8 - If the force in each cable tied to the bin is 70...Ch. 2.8 - If the resultant of the four forces is FR = {360k}...Ch. 2.9 - P2.8. in each case set up the dot product to find...Ch. 2.9 - Prob. 9PPCh. 2.9 - Prob. 25FPCh. 2.9 - Determine the angle between the force and the...Ch. 2.9 - Prob. 27FPCh. 2.9 - Prob. 28FPCh. 2.9 - Find the magnitude of the projected component of...Ch. 2.9 - Prob. 30FPCh. 2.9 - Determine the magnitudes of the components of the...Ch. 2.9 - Prob. 106PCh. 2.9 - Prob. 107PCh. 2.9 - Prob. 108PCh. 2.9 - Prob. 109PCh. 2.9 - Prob. 110PCh. 2.9 - Prob. 111PCh. 2.9 - Prob. 112PCh. 2.9 - Determine the magnitudes of the components of F =...Ch. 2.9 - Prob. 114PCh. 2.9 - Prob. 115PCh. 2.9 - Prob. 116PCh. 2.9 - Determine the magnitudes of the projected...Ch. 2.9 - Determine the angle between cables AB and AC....Ch. 2.9 - Prob. 119PCh. 2.9 - Prob. 120PCh. 2.9 - Determine the angle between the two cables...Ch. 2.9 - Determine the angle between the cables AB and AC....Ch. 2.9 - Determine the magnitude of the projected component...Ch. 2.9 - Determine the magnitude of the projected component...Ch. 2.9 - Determine the magnitude of the projection of force...Ch. 2.9 - Prob. 126PCh. 2.9 - Prob. 127PCh. 2.9 - Prob. 128PCh. 2.9 - Determine the magnitude of the projected component...Ch. 2.9 - Prob. 130PCh. 2.9 - Prob. 131PCh. 2.9 - Determine the magnitude of the projected component...Ch. 2.9 - Prob. 133PCh. 2.9 - Prob. 134PCh. 2.9 - Prob. 135PCh. 2.9 - Prob. 136PCh. 2.9 - Prob. 137PCh. 2.9 - Prob. 138PCh. 2.9 - Prob. 139PCh. 2.9 - Determine the magnitude of the resultant force FR...Ch. 2.9 - Resolve F into components along the u and v axes...Ch. 2.9 - Prob. 3RPCh. 2.9 - The cable at the end of the crane boom exerts a...Ch. 2.9 - Prob. 5RPCh. 2.9 - Prob. 6RPCh. 2.9 - Prob. 7RPCh. 2.9 - Prob. 8RP
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