(a) Explanation Given: The heat capacity of Cold water is c p , c = 4180 J / kg ⋅ K . The heat capacity of hot oil is c p , h = 2200 J / kg ⋅ K . The hot oil inlet temperature ( T h , i ) is 130 ° C . The hot oil exit temperature ( T h , o ) is 60 ° C . The cold water inlet temperature ( T c , i ) is 20 ° C . The overall heat transfer coefficient ( U ) is 220 W / m 2 K . Calculation: Calculate the rate of heat transfer (b) To determine The heat transfer surface area.

5th Edition

ISBN: 9780078027680

Author: Yunus A. Cengel Dr., Robert H. Turner, John M. Cimbala

Publisher: McGraw-Hill Education

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Chapter 22, Problem 116RQ

(a)

To determine

The rate of heat transfer.

(b)

To determine

The heat transfer surface area.

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Chapter 22, Problem 115RQ

Chapter 22, Problem 117RQ

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Problem (14): A pump is being used to lift water from an underground tank through a pipe of diameter (d) at discharge (Q). The total head loss until the pump entrance can be calculated as (h₁ = K[V²/2g]), h where (V) is the flow velocity in the pipe. The elevation difference between the pump and tank surface is (h). Given the values of h [cm], d [cm], and K [-], calculate the maximum discharge Q [Lit/s] beyond which cavitation would take place at the pump entrance. Assume Turbulent flow conditions. Givens: h = 120.31 cm d = 14.455 cm K = 8.976 Q Answers: (1) 94.917 lit/s (2) 49.048 lit/s ( 3 ) 80.722 lit/s 68.588 lit/s 4

Problem (13): A pump is being used to lift water from the bottom tank to the top tank in a galvanized iron pipe at a discharge (Q). The length and diameter of the pipe section from the bottom tank to the pump are (L₁) and (d₁), respectively. The length and diameter of the pipe section from the pump to the top tank are (L2) and (d2), respectively. Given the values of Q [L/s], L₁ [m], d₁ [m], L₂ [m], d₂ [m], calculate total head loss due to friction (i.e., major loss) in the pipe (hmajor-loss) in [cm]. Givens: L₁,d₁ Pump L₂,d2 오 0.533 lit/s L1 = 6920.729 m d1 = 1.065 m L2 = 70.946 m d2 0.072 m Answers: (1) 3.069 cm (2) 3.914 cm ( 3 ) 2.519 cm ( 4 ) 1.855 cm TABLE 8.1 Equivalent Roughness for New Pipes Pipe Riveted steel Concrete Wood stave Cast iron Galvanized iron Equivalent Roughness, & Feet Millimeters 0.003-0.03 0.9-9.0 0.001-0.01 0.3-3.0 0.0006-0.003 0.18-0.9 0.00085 0.26 0.0005 0.15 0.045 0.000005 0.0015 0.0 (smooth) 0.0 (smooth) Commercial steel or wrought iron 0.00015 Drawn…

Chapter 22 Solutions

Fundamentals of Thermal-Fluid Sciences

Ch. 22 - Prob. 1P Ch. 22 - Prob. 2P Ch. 22 - Prob. 3P Ch. 22 - What is the role of the baffles in a...Ch. 22 - Prob. 5P Ch. 22 - Prob. 6P Ch. 22 - Prob. 7P Ch. 22 - Prob. 8P Ch. 22 - Prob. 9P Ch. 22 - In a thin-walled double-pipe heat exchanger, when...

Ch. 22 - Prob. 11P Ch. 22 - Prob. 12P Ch. 22 - Prob. 13P Ch. 22 - Prob. 14P Ch. 22 - Prob. 15P Ch. 22 - Prob. 17P Ch. 22 - Prob. 18P Ch. 22 - Prob. 19P Ch. 22 - Water at an average temperature of 110°C and an...Ch. 22 - Prob. 21P Ch. 22 - Prob. 23P Ch. 22 - Prob. 24P Ch. 22 - Under what conditions is the heat transfer...Ch. 22 - Consider a condenser in which steam at a specified...Ch. 22 - What is the heat capacity rate? What can you say...Ch. 22 - Under what conditions will the temperature rise of...Ch. 22 - Show that the temperature profile of two fluid...Ch. 22 - Prob. 30P Ch. 22 - Prob. 31P Ch. 22 - Prob. 32P Ch. 22 - Prob. 33P Ch. 22 - Prob. 34P Ch. 22 - Prob. 35P Ch. 22 - Prob. 36P Ch. 22 - Prob. 37P Ch. 22 - Prob. 38P Ch. 22 - Prob. 39P Ch. 22 - A double-pipe parallel-flow heat exchanger is to...Ch. 22 - Glycerin (cp = 2400 J/kg·K) at 20°C and 0.5 kg/s...Ch. 22 - Prob. 43P Ch. 22 - A single pass heat exchanger is to be designed to...Ch. 22 - Prob. 45P Ch. 22 - Prob. 46P Ch. 22 - Prob. 47P Ch. 22 - A counter-flow heat exchanger is stated to have an...Ch. 22 - Prob. 49P Ch. 22 - Prob. 51P Ch. 22 - Prob. 52P Ch. 22 - Prob. 54P Ch. 22 - Prob. 56P Ch. 22 - A performance test is being conducted on a...Ch. 22 - In an industrial facility a counter-flow...Ch. 22 - Prob. 59P Ch. 22 - Prob. 60P Ch. 22 - Prob. 61P Ch. 22 - A shell-and-tube heat exchanger with 2-shell...Ch. 22 - A shell-and-tube heat exchanger with 2-shell...Ch. 22 - Repeat Prob. 22–64 for a mass flow rate of 3 kg/s...Ch. 22 - A shell-and-tube heat exchanger with 2-shell...Ch. 22 - A single-pass cross-flow heat exchanger is used to...Ch. 22 - Prob. 68P Ch. 22 - Prob. 69P Ch. 22 - Prob. 70P Ch. 22 - Prob. 71P Ch. 22 - Prob. 72P Ch. 22 - Prob. 73P Ch. 22 - Under what conditions can a counter-flow heat...Ch. 22 - Prob. 75P Ch. 22 - Prob. 76P Ch. 22 - Prob. 77P Ch. 22 - Prob. 78P Ch. 22 - Prob. 79P Ch. 22 - Prob. 80P Ch. 22 - Prob. 81P Ch. 22 - Consider an oil-to-oil double-pipe heat exchanger...Ch. 22 - Hot water enters a double-pipe counter-flow...Ch. 22 - Hot water (cph = 4188 J/kg·K) with mass flow rate...Ch. 22 - Prob. 85P Ch. 22 - Cold water (cp = 4180 J/kg·K) leading to a shower...Ch. 22 - Prob. 89P Ch. 22 - Prob. 90P Ch. 22 - Prob. 91P Ch. 22 - Prob. 92P Ch. 22 - Prob. 93P Ch. 22 - Prob. 94P Ch. 22 - Prob. 95P Ch. 22 - Air (cp = 1005 J/kg·K) enters a cross-flow heat...Ch. 22 - A cross-flow heat exchanger with both fluids...Ch. 22 - Prob. 98P Ch. 22 - Prob. 99P Ch. 22 - Oil in an engine is being cooled by air in a...Ch. 22 - Prob. 101P Ch. 22 - Prob. 102P Ch. 22 - Prob. 103P Ch. 22 - Water (cp = 4180 J/kg·K) enters the...Ch. 22 - Prob. 105P Ch. 22 - Prob. 106P Ch. 22 - Prob. 107P Ch. 22 - Prob. 109P Ch. 22 - Consider the flow of saturated steam at 270.1 kPa...Ch. 22 - Prob. 111RQ Ch. 22 - Prob. 112RQ Ch. 22 - Prob. 113RQ Ch. 22 - A shell-and-tube heat exchanger with 1-shell pass...Ch. 22 - Prob. 115RQ Ch. 22 - Prob. 116RQ Ch. 22 - Prob. 117RQ Ch. 22 - Prob. 118RQ Ch. 22 - A shell-and-tube heat exchanger with two-shell...Ch. 22 - Saturated water vapor at 100°C condenses in the...Ch. 22 - Prob. 121RQ Ch. 22 - Prob. 122RQ Ch. 22 - Prob. 123RQ Ch. 22 - Prob. 124RQ Ch. 22 - Prob. 125RQ Ch. 22 - A cross-flow heat exchanger with both fluids...Ch. 22 - In a chemical plant, a certain chemical is heated...Ch. 22 - Prob. 128RQ Ch. 22 - Prob. 129RQ Ch. 22 - Prob. 130RQ Ch. 22 - Prob. 134DEP

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