Calculate the heat transfer (in Watts) in the first 20 cm of the plate assuming unit depth, if theplate is heated to a temperature of 100C over it complete length with air flowing over it at atemperature of 27°C.[Properties of air at 63.5°C are: k = 0.02749 W/mK, v = 17.36 x 10“ m/s, Cp = 1.006 kJ/kgK and Pr= 0.7.]

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Engineering

Mechanical Engineering

at transfer (in Watts) in o a temperature of 100 27°C. ir at 63 5°Care: -00

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.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.67P

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Calculate the heat transfer (in Watts) in the first 20 cm of the plate assuming unit depth, if the
plate is heated to a temperature of 100C over it complete length with air flowing over it at a
temperature of 27°C.
[Properties of air at 63.5°C are: k = 0.02749 W/mK, v = 17.36 x 10“ m/s, Cp = 1.006 kJ/kg
K and Pr= 0.7.]

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