Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470501979
Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine
Publisher: Wiley, John & Sons, Incorporated
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Textbook Question
Chapter 11, Problem 11S.15P
A cooling coil consists of a bank of aluminum
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A thick-walled cylinder tubing of hard rubber having an inside radius of 20mm is being used as temporary cooling coil in a bath. Ice water is flowing rapidly through inside tube and the inside wall temperature is 274.9K. The outside surface temperature is 297.1K. A total of 14.65W must be removed from the bath by cooling coil. How many m of tubing are required?
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Q1: Considering
the data below:
heat exchanger to cool oil from (60 °C) using water available at (20 °C). The
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Determine the outlet temperatures of the fluids. Workout for parallel flow,
counter flow and shell with two tube passes.
Chapter 11 Solutions
Fundamentals of Heat and Mass Transfer
Ch. 11 - In a fire-tube boiler, hot products of combustion...Ch. 11 - A shell-and-tube heat exchanger is to heat an...Ch. 11 - A steel tube (k=50W/mK) of inner and outer...Ch. 11 - A heat recovery device involves transferring...Ch. 11 - A novel design for a condenser consists of a tube...Ch. 11 - The condenser of a steam power plant...Ch. 11 - Thin-walled aluminum tubes of diameter D = 10mmare...Ch. 11 - A tinned-tube, cross-how heat exchanger is to use...Ch. 11 - Water at a rate of 45,500kg/h is heated from 80...Ch. 11 - A novel heat exchanger concept consists of a...
Ch. 11 - Prob. 11.12PCh. 11 - A process fluid having a specific heat of...Ch. 11 - A shell-and-tube exchanger (two shells, four tube...Ch. 11 - Consider the heat exchanger of Problem 11.14....Ch. 11 - The hot and cold inlet temperatures to a...Ch. 11 - A concentric tube heat exchanger of length L = 2 m...Ch. 11 - A counterflow, concentric tube heat exchanger is...Ch. 11 - Consider a concentric tube heat exchanger with an...Ch. 11 - A shell-and-tube heat exchanger must be designed...Ch. 11 - A concentric tube heat exchanger for cooling...Ch. 11 - A counterflow, concentric tube heat exchanger used...Ch. 11 - An automobile radiator may be viewed as a...Ch. 11 - Hot air for a large-scale drying operation is to...Ch. 11 - In a dairy operation, milk at a flow rate of 250...Ch. 11 - The compartment heater of an automobile...Ch. 11 - A counterflow, twin-tube heat exchanger is made...Ch. 11 - Consider a coupled shell-in-tube heat exchange...Ch. 11 - For health reasons, public spaces require the...Ch. 11 - A shell-and-tube heat exchanger (1 shell pass, 2...Ch. 11 - Saturated water vapor leaves a steam turbine at a...Ch. 11 - The human brain is especially sensitive to...Ch. 11 - Prob. 11.47PCh. 11 - A plate-tin heat exchanger is used to condense a...Ch. 11 - In a supercomputer, signal propagation delays...Ch. 11 - Untapped geothermal sites in the United States...Ch. 11 - A shell-and-tube heat exchanger consists of 135...Ch. 11 - An ocean thermal energy conversion system is...Ch. 11 - Prob. 11.55PCh. 11 - Prob. 11.56PCh. 11 - The chief engineer at a university that is...Ch. 11 - A shell-and-tube heat exchanger with one shell...Ch. 11 - Prob. 11.59PCh. 11 - Prob. 11.60PCh. 11 - Prob. 11.61PCh. 11 - Prob. 11.62PCh. 11 - A recuperator is a heat exchanger that heats air...Ch. 11 - Prob. 11.64PCh. 11 - Prob. 11.65PCh. 11 - A cross-flow heat exchanger consists of a bundle...Ch. 11 - Exhaust gas from a furnace is used to preheat the...Ch. 11 - Prob. 11.68PCh. 11 - A liquefied natural gas (LNG) regasification...Ch. 11 - Prob. 11.70PCh. 11 - A shell-and-tube heat exchanger consisting of...Ch. 11 - Prob. 11.73PCh. 11 - The power needed to overcome wind and friction...Ch. 11 - Prob. 11.75PCh. 11 - Consider a Rankine cycle with saturated steam...Ch. 11 - Consider the Rankine cycle of Problem 11.77,...Ch. 11 - Prob. 11.79PCh. 11 - Prob. 11.80PCh. 11 - Hot exhaust gases are used in a...Ch. 11 - Prob. 11.84PCh. 11 - Prob. 11.90PCh. 11 - Prob. 11S.1PCh. 11 - Prob. 11S.2PCh. 11 - Prob. 11S.3PCh. 11 - Solve Problem 11.15 using the LMTD method.Ch. 11 - Prob. 11S.5PCh. 11 - Prob. 11S.6PCh. 11 - Prob. 11S.8PCh. 11 - Prob. 11S.10PCh. 11 - Prob. 11S.11PCh. 11 - A cooling coil consists of a bank of aluminum...Ch. 11 - Prob. 11S.17P
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- 5.0 Air at p=p= 1 atm enters a thin-walled (D=D= 5-mm diameter) long tube (L=L= 2 m) at an inlet temperature of Tm,i=Tm,i= 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is m˙ =m˙ = 125 × 10-6 kg/s. If the tube surface temperature at the exit is Ts,o=Ts,o= 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T=T=400 K.arrow_forwardConcentric tube heat exchanger (tubular or tube in tube) is used for a large industrial gas turbine. The dimensions and values are given. One of the steps is not required to find the required length of the HX, if the oil leaves at 60 C? Oil and water inlet temperatures are 100 and 30 C, respectively. Thermal entry length to validate the steps O None of the above Log mean temperature difference Reynolds number, Prandtl number and Nusselt number O Overall heat transfer coefficientarrow_forwardSteam condensing at 120°C (h, = 2203 kJ/kg) on the shell side of (1 shell and 12 thin-walled tubes) heat exchanger. Water (18 °C, C, =4180 J/kg-"C) enters the tube @ 3.4 kg/s ấnd the temperature difference between the two fluids at the exit is 57°C, assume LMTD correction factor of 1.0, for each tube: length = 2.7 m, diameter = 2.4 cm. What is the overall heat transfer coefficient (W/m¯.°C)? Select bne: O A. 2234.41 O B. 3859.43 C. 3385.47 D. 2979.21 E. 2606.81arrow_forward
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- PROBLEM Ħ 22.a. mass at a pressure the temperature of hot water is being 248.09 °F to 212.09 °F using a heat exchanger. = 2at m and flow rate = 1020 kg /min, decreased from oF using Reservvir waten s used as coolant with mass flow rate = 1800 kalmin and kg Imin inlet temperature = 50.09 oF. 2 The minimun allow able ft? surface are a= 270. 17 of heat ex changer all ow able overall heat = 206.05 btul The transfer coefficient of heat exchanger maximem do z7f4 The heat capací ty to be used must he the average value of inlet and out let temperatures. Hind the Number of Transfer units (NTU) using effective nes NTU Method if the heat exch anger being used is heat exchang er (specify which fluid is mixed or unmixed Cross flowarrow_forwardA double tube heat exchanger will be used to cool bezene from 82 Celsius to 38 Celsius. water enters the annular space at 21 Celsius, flows countercurrent with benzene at 1.5 m / s, exiting at 37 Celsius. The internal tubing is 1 1/4 inch cd 40 of commercial steel. The outer tubing is 2-inch Cd 40 steel. What is the heat transfer coefficient that would be expected for water? the fluid moves in the annular space of the two tubes that are concentric. there is a formula for that. h = 6,206 kcal / hm ^ 2 ° Carrow_forwardSteam condensing at 120°C (h, kJ/kg) on the shell side of (1 snell and 12 thin-walled tubes) heat exchanger. Water (18 °C, C, =4180 J/kg-°C) enters the tube @ 2.9 kg/s and the temperature difference between the two fluids at the exit is 42°C, assume LMTD correction factor of 1.0, for each tube: length = 2.7 m, diameter = 2.4 cm. What is the rate of condensation 2203 "fg %3D of steam (kg/min) ? Select one: А. 17.63 В. 21.99 C. 23.97 D. 15.45 Е. 19.81arrow_forward
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