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
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 11, Problem 11.13P
A process fluid having a specific heat of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
2-b Hot exhaust gases, which enter a finned-tube, cross-flow heat exchanger at 300 °C and leave at 100 °C.
are used to heat pressurized water at a flow rate of 1 kg/s from 35 °C to 125 °C. The specific heat of water at
the average water temperature is 4197 J/kg. K. The overall heat transfers coefficient based on the gas-side
surface area is Un = 100 W/m².K. Determine the required gas-side surface area A, using the LMTD and
E-NTU method.
In a double-pipe, counter-flow heat exchanger, water entering at 1 kg/s is heated
from 23°C to 69°C as it flows thru the inner pipe. Hot oil enters the heat exchanger
at 2 kg/s and 110°C. The convection heat transfer coefficients in the cold- and hot-
sides are 100 and 50 kW/m2.°C, respectively. Calculate the required heat transfer
area in m?. Take c, = 4.18 kJ/kg.°C for water, and c, = 1.67 kJ/kg.°C for oil.
Round your answer to 2 decimal places.
A counterflow heat exchanger is employed to cool 0.55 kg/s (CP = 2.45 kJ/kg-K) of oil from 115°C to 40°C by the use of water. The inlet and outlet temperatures of cooling water are 15°C and 75°C, respectively. The overall heat transfer coefficient is expected to be 1450 W/m2-°C. Using the NTU method, calculate the following:a. The mass flow rate of water.b. The effectiveness of the heat exchanger
c.Surface area required
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
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Convert the following quantities from English to SI units: a. 98 Btu/(hr-ft-F) b. 0.24 Btu/(lbm-F) C. 0.04 Ibm/...
Heating Ventilating and Air Conditioning: Analysis and Design
What is the weight in newtons of an object that has a mass of (a) 8 kg, (b) 0.04 kg, (c) 760 Mg?
Statics and Mechanics of Materials (5th Edition)
19.8 Calculate the allowable tensile load for the connection shown. The plates are ASTM A36 steel and the weld ...
Applied Statics and Strength of Materials (6th Edition)
5.1 through 5.9
Locate the centroid of the plane area shown.
Fig. P5.1
Vector Mechanics for Engineers: Statics and Dynamics
23.23 A highly oxidized and uneven round bar is being turned on a lathe. Would you recommend a small or a large...
Manufacturing Engineering & Technology
A 20-lb force is applied to the control rod AB as shown. Knowing that the length of the rod is 9 in. and that t...
Statics and Mechanics of Materials
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Water enters a crossflow heat exchanger (both fluids unmixed) at 16 °C and flows at the rate of 7.5 kg/s to cool 10.0 kg/s of air from 120 °C. For an overall heat transfer coefficient of 225 W/m² K and an exchanger surface area of 240 m², what is the exit air temperature? Taking the specific heats of the air and water to be constant at 1.014 and 4.182 kJ/kg K, respectively,arrow_forward5. Hot exhaust gases, which enter a finned-tube, cross-flow heat exchanger at 300 °C and leave at 100 °C, are used to heat pressurized water at a flow rate of 1 kg/s from 35 °C 125 °C. The specific heat of water at the average water temperature is 4197 J/kg. K. The overall heat transfer coefficient based on the gas-side surface area is Uh = 100 W/m².K. Determine the required gas-side surface area A₁ using the LMTD and & -NTU method.arrow_forwardHot water at 60℃ is cooled to 36℃ through the tube side of a 1–shell pass and 2-tube passesheat exchanger. The coolant is also a water stream, for which the inlet and outlet temperaturesare 7℃ and 31℃, respectively. The overall heat transfer coefficient and the heat transfer areaare 950 W/m2 K and 15 m2 , respectively. Calculate the mass flow rates of hot and cold waterstreams in steady operation. (Answers: 3.63 kg/s for both stream)arrow_forward
- In a double-pipe, counter-flow heat exchanger, water entering at 1 kg/s is heated from 23°C to 69°C as it flows thru the inner pipe. Hot oil enters the heat exchanger at 2 kg/s and 110°C. The convection heat transfer coefficients in the cold- and hot-sides are 100 and 50 kW/m2.0C, respectively. Calculate the required heat transfer area in m?. Take cp = 4.18 kJ/kg.°C for water, and cCp = 1.67 kJ/kg.°C for oil. Round your answer to 2 decimal places. Add your answerarrow_forwardA counterflow, concentric tube heat exchanger used for engine cooling has been in service for an extended period of time. The heat transfer surface area of the exchanger is 5 m^2, and the design value of the overall convection coefficient is 38 W/m^2-K. During a test run, engine oil flowing at 0.1 kg/s is cooled from 110°C to 66°C by water supplied at a temperature of 25°C and a flow rate of 0.2 kg/s. Determine whether fouling has occurred during the service period. If so, calculate the fouling factor, R"f(m^2• K/W).arrow_forwardA long, thin-walled double-pipe heat exchanger with tube and shell diameters of 0.01 m and 0.025 m, respectively, is used to condense refrigerant-134a with water at 20°C. The refrigerant flows through the tube, with a convection heat transfer coefficient of hi= 4100 W/m² °C. Water flows through the shell at a rate of 0.3 kg/s. The thermal resistance of the inner tube is negligible since the tube material is highly conductive and its thickness is negligible. Both the water and refrigerant-134a flows are fully developed. Properties of the water and refrigerant-134a are constant. Water properties: p = 998 kg/m³, v=u/p-1.004x 10-6 m²/s, k = 0.598 W/m. °C, Pr = 7.01 Cold water D Doarrow_forward
- A body is desired to be heated with hot water and oil on the body side in a heat exchanger with 20 pipe passes. The inner and outer diameters of the copper pipe are 20 and 24 mm, respectively. Water with a flow rate of 0.2 kg / s enters the pipe at 87 ° C and leaves at 43 ° C. The inlet and outlet temperatures of the oil in the heat exchanger are 7 ° C and 37 ° C, respectively. Average heat transfer coefficient on the outer surface of the pipes is 800 W / m ° K. The fouling resistances on both sides are negligible.Determine;a) Heat transfer b) External surface based total heat transfer coefficient, c) Determine the pipe length in one pass.arrow_forwardA counterflow heat exchanger is designed to cool 0.65 kg/sec of oil with specific heat Cp=3.4 KJ/kg-K from 150°C to 70°C. Water for cooling, Cp = 4.18KJ/kg-K is available at 20°C and flow rate of 0.6 kg/sec. Calculate the length of a 3.5 cm inside diameter tubing in meters. The overall coefficient of heat transfer is 90 W/m²-K. O 452 O 337 O 543 O 296arrow_forwardWhy does a “mixed” or “unmixed” fluid arrangement influence heat-exchanger performance?arrow_forward
- A hot oil is to be cooled by cold water in one shell-pass 8 tube passes heat exchanger. If the surface area of the pipes is 3 m? and the overall heat transfer coefficient U is 315 W/m.K. The cold water enters the tubes at 20C with a mass flow rate of 0.4 kg /s and the oil enters the shell at 150°C with a mass flow rate of 0.6 kg /s. Take c, for water as 4.20 kJ/kg.°C and for oil as 2.10 kJ/kg.K. Calculate a) The heat transfer rate for this heat exchanger b) The outlet temperature of water .c) The outlet temperature of oil Oil Waterarrow_forwardA one-shell pass and two-tube passes heat exchanger cools 1.8 L/s of oil (cp = 2.5 kJ/kg-K and density = 720 kg/m3) from 94 C to 48 C. Cooling water enters the tubes at 15 C and leaves at 40 C. The overall coefficient of heat transfer is 450 W/m2-K. Fouling of the tubes occurs, resulting in one-quarter of the tubes being blocked. The conditions remain the same except for the outlet temperatures. Determine the (a) oil exit temperature (1 decimal place) and (b) water exit temperature (1 decimal place) under the new condition.arrow_forwardGlycerin (cp=2400 J/kg*K) at 20°C and 1 kg/s is to be heated by ethylene glycol (cp = 2500 J/kg*K) at 75°C and the same mass flow rate in a thin-walled double-pipe parallel-flow heat exchanger. If the overall heat transfer coefficient is 380 W/m²*K and the pipe is 75m long and 2.5cm in diameter, determine (a) the rate of heat transfer and (b) the outlet temperatures of the glycerin and the glycol.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning
Principles of Heat Transfer (Activate Learning wi...
Mechanical Engineering
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Cengage Learning
How Shell and Tube Heat Exchangers Work (Engineering); Author: saVRee;https://www.youtube.com/watch?v=OyQ3SaU4KKU;License: Standard Youtube License