A long aluminum wire of diameter 3 mm is extruded at a temperature of 280°C. The wire is subjected to cross air flow at 20°C at a velocity of 6 m/s. Determine the rate of heat transfer from the wire to the air per meter length when it is first exposed to the air.

A long aluminum wire of diameter 3 mm is extruded at a temperature of 280°C. The wire is subjected to cross air flow at 20°C at a velocity of 6 m/s. Determine the rate of heat transfer from the wire to the air per meter length when it is first exposed to the air.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.38P

See similar textbooks

Related questions

Q: 5) A long aluminum wire of diameter 3 mm is extruded at a temperature of 370°C. The wire is…

Q: 4: Hot methane exhaust gas at 1 atm is being cooled by flat plates. The gas at 150°C flows parallel…

A: Given Pressure = 1 atm Plate length = 2.5 m Velocity =2.5 m/s Surface temperature = 50o C Gas…

Q: A long 9 cm-diameter steam pipe whose external surface temperature is 70 0C passes through some open…

Q: - Hot water at average temperature of 90 °C flows at average velocity of 1.2 m/s through a 30-m-long…

A: Write the given data with suitable variables. Tw=90 °Cvw=1.2 m/sPrw=1.7L=30 mdi=75 mm=0.075 m1000…

Q: An airplane engine intakes air. adds fuel to burn the air and exhausts the burnt gases to generate…

Q: A coated sheet is being dried with hot air blowing in cross flow on the sheet surface. The surface…

A: Given data as per question The surface temperature of sheet = 90°C Air velocity = 0.3 m/s Air…

Q: A long 10-cm-diameter steam pipe whose external surface temperature is 110°C passes through some…

A: In order to proceed with the problems some assumptions need to be considered. Steady operating…

Q: Air at 350C flows across a cylinder of 50 mm diameter at a velocity of 50 m/s. The cylinder surface…

Q: During a cold winter day, wind at 55 km/h is blowing parallel to a 4m high and 10m long wall of a…

Q: An array of power transistors, dissipating 6W of power each, are to be cooled by mounting them on a…

Q: Consider a 50-cm-diameter and 95-cm-long hot water tank. The tank is placed on the roof of a house.…

A: Given data Diameter of the pipe = 50 cm =0.5m Length of the pipe = 95cm = 0.95m Final temperature of…

Q: Four power transistors, each dissipating 12 W, are mounted on a thin vertical aluminum plate (k =…

A: The properties of air at 40 degrees Celsius and 1 atm pressure are: The Reynolds number of the flow…

Q: Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a…

Q: The forming section of a plastics plant puts out a continuous sheet of plastic that is 1.2 m wide…

Q: Air is flowing in parallel over the upper surface of a flat plate with a length of 4 m. The first…

A: The value of kinematic viscosity, v = 1.608×10-5 m2s Thermal conductivity, k = 0.02588 Wm·K Prantl…

Q: Air is to be heated by passing it over a bank of 3-m-long tubes inside which steam is condensing at…

Q: Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat plates. The gas at 220°C flow is…

Q: During a cold winter day, wind at 55 km/h is blowing parallel to a 4-m-high and 10-m-long wall of a…

Q: Hot methane exhaust gas at 1 atm is being cooled by flat plates. The gas at 150°c flows parallel…

A: Assuming that hot methane acts as air.

Q: A long 8-cm-diameter steam pipe whose external surface temperature is 90°C passes through some open…

A: Given data diameter of the pipe D = 8 cm = 0.08m External surface temperature of the pipe Ts = 900C…

Q: Air at 300 degrees Celsius flows over a plate of dimension 0.5 m by 0.25 m. If the convection heat…

Q: Example 1: The components of an electronic system are located in a 1.5-m-long horizontal duct whose…

Q: Air is to be heated by passing it over a bank of 3-m-long tubes inside which steam is condensing at…

Q: What is the physical significance of the Reynolds number? How is it defined for external flow over a…

A: Given: Plate with length L To find; Significance of Reynolds number Reynolds number for external…

Q: Engine oil at 83°C flows over the upper surface of a 5-m-long flat plate whose temperature is 18°C…

Q: In the effort to increase the removal of heat from a hot surface at 120°C, a cylindrical pin fin (kf…

A: The properties of air at a temperature of 70 oC are given as, The characteristic length of the…

Q: Flue gases from an incinerator are released to atmosphere using a stack that is 0.6 m in diameter…

A: Given : The diameter of stack = 0.6 m The height of the stack = 10 m Surface temperature of the…

Q: Air with a pressure of 1 atm and a temperature of 285 K flows in a duct rectangular shape with a…

A: Given, Pressure, P=1atmTemperature, T=285KMass flow rate, m=0.1kg/sDuct size=75mm×150mmLength of…

Q: Air at a pressure of 1 atm. abs. and 50°C flows parallel to the top surface of a rectangular plate,…

Q: Q4/A long aluminum wire of diameter 3 mm is extruded at a temperature of 370°C. The wire is…

Q: Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat plates. The gas at 220oC flows in…

Q: Air is flowing in parallel over the upper surface of a flat plate with a length of 4 m. The first…

A: The velocity of free stream is V=0.5 m/s. The temperature of air is T∞=100C. The kinematic viscosity…

Q: A plate with negligible thickness of 50 cm and a length of 100 cm is exposed to 2 different air…

A: Given dataWidth of the plate t = 50cm = 0.5mLength of the plate L = 100cm = 1mSpeed of air flowing…

Q: 19-42 A long 8-cm-diameter steam pipe whose external surface temperature is 90°C passes through some…

Q: Consider a flow over a surface with the velocity and temperature profiles given as u(v) = C1 (y + y²…

A: Given Data

Q: Example 1: Engine oil at 60°C flows over the upper surface of a 5-m-long flat plate whose…

Q: Consider a 50-cm-diameter and 95-cm-long hot water tank. The tank is placed on the roof of a house.…

Q: Water at 43.3°C flows over a large square plate at a velocity of 21 cm/s. The plate is 1.9 m long…

A: Reynolds number is calculated for V=.21 m/s. Nusselt number are found and from here H is calculated.…

Q: 6- Air at a pressure of 200 kPa and free-stream temperature of 27 C flows over a square flat plate…

Q: Wind flows over a flat plate of length L = 25 mm and width W = 8 mm. The plate is maintained at a…

A: The flow Reynolds number: Re = 1.6426 × 105 (Laminar flow)

Q: Consider turbulent forced convection in a circular tube. Will the heat flux be higher near the inlet…

A: When a fluid is forced through a plane surface or a tube by means of external force such as fan is…

Q: Consider a refrigeration truck traveling at 55 mph at a location where the air temperature is 80°F.…

A: The data given is, Size of the refrigerated compartment = 9 ⨯ 8 ⨯ 20 = 1440 ft3 Length of…

Q: Air is heated in a 4cm×4cm sheet metal duct with a uniform surface heat flux of 590 W/m2. The mean…

Q: Determine the pressure drop across the tube bank

Question

A long aluminum wire of diameter 3 mm is extruded
at a temperature of 280°C. The wire is subjected to cross air
flow at 20°C at a velocity of 6 m/s. Determine the rate of
heat transfer from the wire to the air per meter length when it
is first exposed to the air.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 6 images

SEE SOLUTION Check out a sample Q&A here

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

A long 8-cm-diameter steam pipe whose external surface temperature is 90°C passes through some open area that is not protected against the winds. Determine the rate of heat loss from the pipe per unit of its length when the air is at 1 atm pressure and 7°C and the wind is blowing across the pipe at a velocity of 50 km/h.
A long 10-cm-diameter steam pipe whose external surface temperature is 110°C passes through some open area that is not protected against the winds . Determine the rate of heat loss from the pipe per unit of its length when the air is at 1 atm pressure and 10°C and the wind is blowing across the pipe at a velocity of 8 m/s.
Hot methane exhaust gas at 1 atm is being cooled by flat plates. The gas at 150°C flows parallel over the upper and lower surfaces of a 2.5 m long flat plate at a velocity of 2.5 m/s. if the flat plate surface temperature is maintained at 50°C, determine the local convection heat transfer coefficient at 1 m from the leading edge.
Question No. 3: During a cold winter day, wind at 55 km/h is blowing parallel to a 4-m-high and 10-m-long wall of a house. If the air outside is at 5°C and the surface temperature of the wall is12°C, determine the rate of heat loss from that wall by convection. What would your answer be if the wind velocity was doubled
Calculate the heat transfer from a 60 cm x 60 cm plate on which air flows at 40 C and. The plate temperature is 100 C while the air speed is 5 m/s.
Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat plates. The gas at 220°C flows in parallel over the upper and lower surfaces of a 1.5-m-long flat plate at a velocity of 3 m/s. If the flat plate surface temperature is maintained at 80°C, determine (a) the local convection heat transfer coefficient at 1 m from the leading edge, (b) the average convection heat transfer coefficient over the entire plate, and (c) the total heat flux transfer to the plate.
Air at 300 degrees Celsius flows over a plate of dimension 0.5 m by 0.25 m. If the convection heat transfer coefficient is 250 Watts per Sq.m Kelvin, determine the heat transfer rate from the air to one side of the plate if the plate is to be maintained at 40 degrees Celsius.
A 1.2-in-outer-diameter pipe is to span across a river at a 115-ft-wide section while being completely immersed in water. The average flow velocity of the water is 8 ft/s, and its temperature is 70°F. Determine the drag force exerted on the pipe by the river.
During a cold winter day, wind at 55 km/h is blowing parallel to a 4m high and 10m long wall of a house. If the air outside is at 5 degrees Celsius and the surface temperature of the wall is 12 degrees Celsius , determine the rate of heat loss from the wall by convection. What would your answer be if the wind velocity has doubled? From Table A-1:thermal conductivity, k = 0.0246 W/m degrees Celsiusviscosity, v = 1.4 x 10^-5 m^2/sPrandtl no. Pr = 0.717
A plate with negligible thickness of 50 cm and a length of 100 cm is exposed to 2 different air flows in the same direction from its lower and upper surface along its length. The speed of the air flowing from the upper surface of the plate is 3600 m / min and its temperature is 473 K, the temperature of the air flowing from the lower surface is 298 K and its speed is 600 m / min. Calculate the total heat exchange between both fluids. (Assume the initial temperature of the plate is 160⁰C.)
‏The nose section of the rocket is made up of a 6 mm thick stainless steel plate (p = 7800 kg/m°, c = 460 J/kg°C, k = 55 W/m°C). It is held initially at a uniform temperature of " T = 47°C. When the rocket enters the denser layers of the atmosphere at a very high velocity the effective temperature of the air surrounding the nose region attains the value 2150 °C; the surface convective heat transfer coefficient is estimated as 3395 W/m?°C. If the maximum metal temperature is not to exceed 1100°C, determine: (i) Maximum permissible time in these surroundings. (i) Inside surface temperature under these conditions.
Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat plates. The gas at 220oC flows in parallel over the upper and lower surfaces of a 1.5-m-long flat plate at a velocity of 3m/s. if the flat plate surface temperature is maintained at 80oC, determine (a) the local convection heat transfer coefficient at 1 m from the leading edge, (b) the average convection heat transfer coefficient over the entire plate, and (c) the total heat flux transfer to the plate.