Q7/ To reduce frosting it is desired to keep the outside surface of a glazedwindow at 4°C. The outside is at -10°C and the convection coefficient is60 W/m K. In order to maintain the conditions a uniform heat flux isprovided at the inner surface which is in contact with room air at 22°Cwith a convection coefficient of 12 W/m2K. The glass is 7 mm thick andhas a thermal conductivity of 1.4 W/mK. Determine the heating requiredper m² area.

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Answered: with a convection coefficient of 12 W/m…

with a convection coefficient of 12 W/m K. The glass is 7 mm thick and has a thermal conductivity of 1.4 W/mK. Determine the heating required per m area.

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.3P: 2.3 The shield of a nuclear reactor is idealized by a large 25-cm-thick flat plate having a thermal...

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Question

Q7/ To reduce frosting it is desired to keep the outside surface of a glazed
window at 4°C. The outside is at -10°C and the convection coefficient is
60 W/m K. In order to maintain the conditions a uniform heat flux is
provided at the inner surface which is in contact with room air at 22°C
with a convection coefficient of 12 W/m2K. The glass is 7 mm thick and
has a thermal conductivity of 1.4 W/mK. Determine the heating required
per m² area.

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