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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Chapter 11, Problem 11.12P
To determine
Whether the hot or cold fluids of the heat exchanger limits the heat transfer rate.
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Derive the ΔTlm equation for a cocurrent (a.k.a. parallel flow) heat exchanger and comment on how your result compares to that for a countercurrent (a.k.a. counterflow) heat exchanger?
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B
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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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- 10.1 In a heat exchanger, as shown in the accompanying figure, air flows over brass tubes of 1.8-cm 1D and 2.1-cm OD containing steam. The convection heat transfer coefficients on the air and steam sides of the tubes are , respectively. Calculate the overall heal transfer coefficient for the heal exchanger (a) based on the inner tube area and (b) based on the outer tube area.arrow_forwardMot water is used to heat air in a double-pipe heat exchanger as shown in the following sketch. If the heat transfer coefficients on the water side and on the air side are 550W/m2Kand55W/m2K respectively, calculate the overall heat transfer coefficient based on the outer diameter. The heat exchanger pipe is 5-cm, schedule 40 steel (k=54W/mK) with water inside.arrow_forwardNanofluids are at the spot of consideration for new generation of heat exchangers. As a process engineer working at solar power system, you were assigned to design a novel heat exchanger and you was advised to use nanofluids. Which nanofluid you will use? What are the expected heat transfer enhancement? what are the expected challenges?arrow_forward
- Explain in two points, the technical concepts behind convection, Give the make of heat exchanger tubes and shells. Also explain the flow passes in 2-2 shell and tube heat exchanger.arrow_forward1 please explain well in type form thank you Why does a “mixed” or “unmixed” fluid arrangement influence heat-exchanger performance?arrow_forwardEnlist parts of Heat exchanger . Explain in detailarrow_forward
- Due higher viscosity, the heat-transfer coefficient of moving liquid hydrocarbons is generally higher than that of moving water Select one: O True O False The proper strategy to enhance heat transfer of a heat exchanger is trying to increase the heat transfer coefficient of the side with the lower heat resistant. Select one: O True O False For the universal 3-D heat transfer equation (see topic 7 in URCourses notes), we have to simplify by eliminating terms that are zero or near zero first, and then we can only use numerical methods (such as finite difference) to solve those problems. Select one: O True O Falsearrow_forwardIn a concentric-pipe heat exchanger, one of the fluids is a condensing vapour and theother is the coolant. Sketch the variation in fluid temperatures of two fluids as theyflow through the heat exchanger. Indicate clearly the inlet and outlet of the coolantand its direction of flow.arrow_forwardFor phase-free heat transfer and turbulent flow on both sides of a tube-boiler type heat exchanger, how the heat transfer coefficient on the boiler side will change with 50% increase in mass flow rate and how the heat transfer coefficient on the tube side is affected by 50% increase in mass flow rate (without using numerical values. ) display mathematicallyarrow_forward
- what overall thermal system is this for in reference to part 1 , also could you also use numbers from a source for part 2 and do the calculations that way with actual reliable numbers , to make things easier to understand. And also part 2 is not complete as you need to complete performance optimisation of heat exchangers.arrow_forwardA heat exchanger is a system used to transfer heat between two or more fluids. Explain industrial application of different types of heat exchanger and also explain LMTD method counter & parallel flow arrangement.arrow_forwardQUESTION & A concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C. h= 1,370 J/kg · "C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. The cooling fluid is water entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U = 250 W/m. °C. Water Mercury Determine the outlet temperature of the water. O None of these answers O 95°C O 125°C O 105°C O 85°Carrow_forward
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