A 20 cm-diameter-copper cylinder is to be heated from 50 °C to an average temperature of 150 °C with 111074 J of heat transfer. Given the average density and specific heat of copper in this temperature range to be p = 8950 kg/m³ and cp = 0.395 kJ/kg.-°C, respectively, determine, [Sebuah silinder kuprum berdiameter 20 cm dipanaskan daripada 50°C ke suhu purata 150°C dengan pemindahan haba sebanyak 111074 J . Diberikan ketumpatan purata dan haba spesifik dalam lingkungan haba tersebut ialah p = 8950 kg/m² and c, = 0.395 kJ/kg..°C. Tentukan] (a) The height of copper cylinder. [Tinggi silinder kuprum.] (i) (ii) The time required if the rate of heat transfer is 30.85 W. [Masa diperlukan jika kadar pemindahan haba ialah 30.85W.] (iii) The average heat flux. [Haba fluks purata.]

A 20 cm-diameter-copper cylinder is to be heated from 50 °C to an average temperature of 150 °C with 111074 J of heat transfer. Given the average density and specific heat of copper in this temperature range to be p = 8950 kg/m³ and cp = 0.395 kJ/kg.-°C, respectively, determine, [Sebuah silinder kuprum berdiameter 20 cm dipanaskan daripada 50°C ke suhu purata 150°C dengan pemindahan haba sebanyak 111074 J . Diberikan ketumpatan purata dan haba spesifik dalam lingkungan haba tersebut ialah p = 8950 kg/m² and c, = 0.395 kJ/kg..°C. Tentukan] (a) The height of copper cylinder. [Tinggi silinder kuprum.] (i) (ii) The time required if the rate of heat transfer is 30.85 W. [Masa diperlukan jika kadar pemindahan haba ialah 30.85W.] (iii) The average heat flux. [Haba fluks purata.]

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

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

HEAT TRANSFER SUBJECT

A 20 cm-diameter-copper cylinder is to be heated from 50 °C to an average temperature
of 150 °C with 111074 J of heat transfer. Given the average density and specific heat
of copper in this temperature range to be p = 8950 kg/m³ and cp = 0.395 kJ/kg.°C,
respectively, determine
[Sebuah silinder kuprum berdiameter 20 cm dipanaskan daripada 50°C ke suhu purata 150°C dengan
pemindahan haba sebanyak 111074 J. Diberikan ketumpatan purata dan haba spesifik dalam
lingkungan haba tersebut ialah p = 8950 kg/m² and c, = 0.395 kJ/kg..°C. Tentukan]
(a)
(i)
The height of copper cylinder.
[Tinggi silinder kuprum.]
(ii)
The time required if the rate of heat transfer is 30.85 W.
[Masa diperlukan jika kadar pemindahan haba ialah 30.85W.]
The average heat flux.
[Haba fluks purata.]
(iii)

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