Fluid Mechanics (2nd Edition)
2nd Edition
ISBN: 9780134649290
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 2, Problem 73P
To determine
The resultant force and its location acting on the triangular plate.
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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
Fluid Mechanics (2nd Edition)
Ch. 2 - Prob. 1FPCh. 2 - The container is partially filled with oil, water,...Ch. 2 - The U-tube manometer is filled with mercury,...Ch. 2 - The tube is filled with mercury from A to B, and...Ch. 2 - The air pressure in the pipe at A is 300 kPa....Ch. 2 - Determine the absolute pressure of the water in...Ch. 2 - The bin is 1.5 m wide and is filled with water to...Ch. 2 - The bin is 2 m wide and is filled with oil to the...Ch. 2 - The 2-m-wide container is filled with water to the...Ch. 2 - Determine the resultant force of the water acting...
Ch. 2 - Determine the resultant force of the water acting...Ch. 2 - The tank is filled with water and kerosene to the...Ch. 2 - The 0.5-m-wide inclined plate holds water in a...Ch. 2 - Determine the resultant force the oil exerts on...Ch. 2 - Determine the resultant force the water exerts on...Ch. 2 - The tank has a width of 2 m and is filled with...Ch. 2 - Determine the horizontal and vertical components...Ch. 2 - The plate ABC is 2 m wide. Determine the angle θ...Ch. 2 - The cylindrical cup A of negligible weight...Ch. 2 - The 3-m-wide cart is filled with water to the...Ch. 2 - Prob. 21FPCh. 2 - Prob. 22FPCh. 2 - If the open cylindrical container rotates at ω = 8...Ch. 2 - Prob. 24FPCh. 2 - Prob. 1PCh. 2 - The oil derrick has drilled 5 km into the ground...Ch. 2 - Prob. 3PCh. 2 - Oxygen in a tank has an absolute pressure of 130...Ch. 2 - If the piezometer measures a gage pressure of 10...Ch. 2 - If the absolute pressure in a tank is 140 kPa,...Ch. 2 - The field storage tank is filled with oil. The...Ch. 2 - Prob. 8PCh. 2 - The closed tank was completely filled with carbon...Ch. 2 - The soaking bin contains ethyl alcohol used for...Ch. 2 - The soaking bin contains ethyl alcohol used for...Ch. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - The tank is filled with water and gasoline at a...Ch. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - A liquid has a density that varies with depth h,...Ch. 2 - Prob. 22PCh. 2 - In the troposphere, which extends from sea level...Ch. 2 - Prob. 24PCh. 2 - A heavy cylindrical glass is inverted and then...Ch. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Butyl carbitol, used in the production of...Ch. 2 - Determine the level h′ of water in the tube if the...Ch. 2 - Determine the pressures at points A and B. The...Ch. 2 - Determine the pressure at point C. The containers...Ch. 2 - Determine the difference in pressure pB − pA...Ch. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - A solvent used for plastics manufacturing consists...Ch. 2 - A solvent used for plastics manufacturing consists...Ch. 2 - The inverted U-tube manometer is used to measure...Ch. 2 - Solve Prob. 2-37 if the top segment is filled with...Ch. 2 - The two tanks A and B are connected using a...Ch. 2 - Prob. 40PCh. 2 - Determine the height h of the mercury in the tube...Ch. 2 -
The micro-manometer is used to measure small...Ch. 2 - The Morgan Company manufactures a micro-manometer...Ch. 2 - Determine the difference in pressure pA − pB...Ch. 2 - The pipes at A and B contain oil and the...Ch. 2 - The vertical pipe segment has an inner diameter of...Ch. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - The storage tank contains oil and water acting at...Ch. 2 - The uniform rectangular relief gate AB has a...Ch. 2 -
Determine the critical height h of the water...Ch. 2 - A swimming pool has a width of 12 ft and a side...Ch. 2 - Prob. 53PCh. 2 - The uniform control gate AB is pinned at A and...Ch. 2 - Prob. 55PCh. 2 - Determine the critical height h of the water level...Ch. 2 - The gate is 2 ft wide and is pinned at A and held...Ch. 2 - The uniform rectangular relief gate AB has a...Ch. 2 - The tide gate opens automatically when the tide...Ch. 2 - The tide gate opens automatically when the tide...Ch. 2 - The bin is used to store carbon tetrachloride, a...Ch. 2 - Prob. 62PCh. 2 - Prob. 63PCh. 2 - The pressure of the air at A within the closed...Ch. 2 - The uniform plate, which is hinged at C, is used...Ch. 2 - Determine the placement d of the pin on the...Ch. 2 - Determine the placement d of the pin on the...Ch. 2 - The tapered settling tank is filled with oil....Ch. 2 - The tapered settling tank is filled with oil....Ch. 2 - Ethyl alcohol is pumped into the tank, which has...Ch. 2 - The bent plate is 2 m wide and is pinned at A and...Ch. 2 -
The tank is filled to its top with an industrial...Ch. 2 - Solve Prob. 20–72 using the integration...Ch. 2 - If the tank is filled with vegetable oil,...Ch. 2 -
If the tank is filled with vegetable oil,...Ch. 2 - Prob. 76PCh. 2 - Determine the resultant force acting on the...Ch. 2 - Solve Prob. 2-77 using the integration...Ch. 2 - Prob. 79PCh. 2 - Prob. 80PCh. 2 - Prob. 81PCh. 2 - Prob. 82PCh. 2 - Prob. 83PCh. 2 - Prob. 84PCh. 2 - Prob. 85PCh. 2 - Prob. 86PCh. 2 - Prob. 87PCh. 2 - Prob. 88PCh. 2 - Prob. 89PCh. 2 -
The control gate ACB is pinned at A and rests on...Ch. 2 - Prob. 91PCh. 2 -
The uniform plate, which is hinged at C, is used...Ch. 2 -
The bent plate is 1.5 m wide and is pinned at A...Ch. 2 - Prob. 94PCh. 2 - Prob. 95PCh. 2 - Prob. 96PCh. 2 - Prob. 97PCh. 2 - The 5-m-wide overhang is in the form of a...Ch. 2 - Determine the resultant force that water exerts on...Ch. 2 - Prob. 100PCh. 2 - Prob. 101PCh. 2 - Prob. 102PCh. 2 - Prob. 103PCh. 2 - A quarter-circular plate is pinned at A and tied...Ch. 2 - Prob. 105PCh. 2 - The semicircular gate is used to control the flow...Ch. 2 - Prob. 107PCh. 2 - Plate AB has a width of 1.5 m and a radius of 3 m....Ch. 2 - Prob. 109PCh. 2 - Prob. 110PCh. 2 - Prob. 111PCh. 2 - Prob. 112PCh. 2 - Prob. 113PCh. 2 - Prob. 114PCh. 2 - Prob. 115PCh. 2 - Prob. 116PCh. 2 - Prob. 117PCh. 2 - Prob. 118PCh. 2 - Prob. 119PCh. 2 - Prob. 120PCh. 2 - Prob. 121PCh. 2 - A glass having a diameter of 50 mm is filled with...Ch. 2 - Water in the container is originally at a height...Ch. 2 - Prob. 124PCh. 2 - Prob. 125PCh. 2 - Prob. 126PCh. 2 -
The hot-air balloon contains air having a...Ch. 2 - Prob. 128PCh. 2 - Prob. 129PCh. 2 - Prob. 130PCh. 2 - Prob. 131PCh. 2 - The truck carries an open container of water. If...Ch. 2 - Prob. 133PCh. 2 - The open rail car is 6 ft wide and filled with...Ch. 2 - Prob. 135PCh. 2 -
A large container of benzene is being transported...Ch. 2 - If the truck has a constant acceleration of 2...Ch. 2 - Prob. 138PCh. 2 - Prob. 139PCh. 2 - Prob. 140PCh. 2 - Prob. 141PCh. 2 - Prob. 142PCh. 2 - Prob. 143PCh. 2 - Prob. 144PCh. 2 - Prob. 145PCh. 2 - Prob. 146PCh. 2 - Prob. 147PCh. 2 - Prob. 3CPCh. 2 - Prob. 4CP
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