A straight cylindrical fin 0.6 cm in diameter and 6 cm long protrudesfrom a magnesium block at 300°C. Air at 35°C is forced past thefin so that h is 130 W/m²K. Calculate the heat removed by the fin,the fin efficiency, and the fin effectiveness.

Given:d=6 mmL=60 mmTb=300°CT∞=35°Ch=130 W/mKK=180W/m.k

Answered: A straight cylindrical fin 0.6 cm in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A straight cylindrical fin 0.6 cm in diameter and 6 cm long protrudes from a magnesium block heldat 300°C. Air at 35°C is forced past the fin so ℎ̅ is 130 W/m2K. Calculate the heat removed by the fin, the finefficiency, and the fin effectiveness.
A 5.0-cm-diameter cylinder is heated to a temperature of 200 oC, and air at 30 oC forced across it at a velocity of 50 m/s (h = 180 W/m2K). If the surface emissivity is 0.7, calculate the total heat loss per unit length if the walls of the enclosing room are at 10 oC. Comment on your calculation. COMPLETE SOLUTION
A 6 cm diameter sphere or cylinder is initially at 100C. Later, this sphere or cylinder was thrown into water at 800C. Calculate how long it will take for the center temperature of the sphere or cylinder to reach 500C by taking the convection heat transfer coefficient as 80W / m2K. Thermal properties of cylinder materialk = 0.587 W / moC alfa=0,13x10^-5 m^2/s
An ice chest is constructed of Styrofoam [k = 0.033 W/m.°C] with inside dimen sions of 25 by 40 by 100 cm. The wall thickness is 5.0 cm The outside of the chest is exposed to air at 25°C with N=10 W/m2°C. If the chest is completely filled with ice, calculate the time for the ice to completely melt. State your assumptions. The enthalpy of fusion for water is 330 kJ/kg
A 5.0-cm-diameter cylinder is heated to a temperature of 200°C, and air at 30 °C forced across it at a velocity of 50 m/s (h = 180 W/m2 K). If the surface emissivity is 0.7, calculate the total heat loss per unit length if the walls of the enclosing room are at 10 °C. Comment on your calculation.
A carbon steel plate (thermal conductivity = 45 W/m°C) 600 mm x 900 mm x 25 mm is maintained at 310°C. Air at 15°C blows over the hot plate. If convection heat transfer coefficient is 22 W/m.°C and 250 W is lost from the plate surface by radiation, calculate the inside plate temperature.
A USB-powered coffee cup warmer advertised on Amazon claims to have a heating plate that reaches 85°C when there is no cup placed on it. What is the electrical power required for this? Assume the device is 100% efficient at converting electrical power to heat in the plate and that heat from the plate is lost to air from the top surface of the heating plate only. Take ambient temperature to be 20.0°C, the diameter of the plate to be 10.0 cm, the convection coefficient from the plate to air to be 7.1 W/(m2.K), and take the emissivity of the plate to be 1.0. 7.0 W 9.8 W 12 W 3.6 W 7.7 W 5.5 W
A 4 m2window has a surface temperature of 30°C and the outside wind isblowing air at 5°C across it with a convection heat transfer coefficient of h = 200 W/m2K. What is the total heat transfer !
Air at 20 °C blows over a hot plate 50 by 75 cm maintained at 250 °C. The convection heat-transfer coefficient is 30 W/m2·K. Find:Calculate the convective heat transfer rate.Assuming that the plate is made of carbon steel (1% C) 2 cm thick and that additional 300 W is lost from the plate surface by radiation besides convection heat transfer, calculate the plate temperature on the other side.(Note: the thermal conductivity of carbon steel (1% C) is about 43 W/m·K)
Air at 24°C is blown over a hot pipe with a surface area of 2.94 m2 to dissipate 924 W of heat energy. What is the minimum convection heat transfer coefficient that will ensure that the temperature of the pipe surface is less than 45°C [round your final answer to two decimal places]?
A carbon steel plate (thermal conductivity = 45 W/m°C) 600 mm x 900 mm x 25mm is maintained at 300°C. Air at 15°C blows over the hot plate. If convection heat transfer coefficient is 21 W/m2°C and 260 W is lost from the plate surface by radiation, Determine the inside plate temperature.
An ice chest is constructed of Styrofoam [k = 0.033 W/m.°C] with inside dimensions of 25 by 40 by 100 cm. The wall thickness is 5.0 cm The outside of the chest is exposed to air at 25°C with N=10 W/m2°C. If the chest is completely filled with ice, calculate the time for the ice to completely melt. State your assumptions. The enthalpy of fusion for water is 330 kJ/kg

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS

A straight cylindrical fin 0.6 cm in diameter and 6 cm long protrudes from a magnesium block at 300°C. Air at 35°C is forced past the fin so that ħ is 130 W/m²K. Calculate the heat removed by the fin, the fin efficiency, and the fin effectiveness.