(4) Determine the steady-state surface temperature of an electric cable 25 cm in diameter and 300 cm in length, which is suspended horizontally in still air in which heat is dissipated by the cable at a rate 26 W per meter of length. The air temperature is A °C. [Hints: (i) Use Churchill & Chu horizontal cylinder equation for the prediction of natural convection heat transfer coefficient.(ii) Initial guess of surface temperature = 35 °C]. State your assumptions, if any.Your parameter value for (A) will be based on the last digit of your student number.e.g. If your metric card number is A0185796Y, please take the (A) value from parameter set (6) below. A similar rule is applied to other cases.(0) A = 20(4) A = 24(8) A = 28(1) A = 21(5) A = 25(9) A = 30(2) A = 22(6) A = 26(3) A = 23(7) A = 27 (4) Determine the steady-state surface temperature of an electric cable 25 cm in diameter and300 cm in length, which is suspended horizontally in still air in which heat is dissipated by thecable at a rate 26 W per meter of length. The air temperature is A °C. [Hints: (i) Use Churchill& Chu horizontal cylinder equation for the prediction of natural convection heat transfercoefficient.0.387Rap.Nup0.6 +1+Pr(1i) Initial guess of surface temperature = 35 °C]. State your assumptions, if any.Your parameter value for (A) will be based on the last digit of your student number.e.g. If your metric card number is A0185796Y, please take the (A) value from parameterset (6) below. A similar rule is applied to other cases.(0) A = 20(4) A = 24(8) A = 28(1) A = 21(5) A = 25(9) A = 30(2) A = 22(6) A = 26(3) A = 23(7) A = 272.

Surface temperature of the electric cable is to be found. Given:Initial guess for surface…

Answered: (4) Determine the steady-state surface…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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(4) Determine the steady-state surface temperature of an electric cable 25 cm in diameter and 300 cm in length, which is suspended horizontally in still air in which heat is dissipated by the cable at a rate 26 W per meter of length. The air temperature is A °C. [Hints: (i) Use Churchill & Chu horizontal cylinder equation for the prediction of natural convection heat transfer coefficient. (ii) Initial guess of surface temperature = 35 °C]. State your assumptions, if any. Your parameter value for (A) will be based on the last digit of your student number. e.g. If your metric card number is A0185796Y, please take the (A) value from parameter set (6) below. A similar rule is applied to other cases. (0) A = 20 (4) A = 24 (8) A = 28 (1) A = 21 (5) A = 25 (9) A = 30 (2) A = 22 (6) A = 26 (3) A = 23 (7) A = 27

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