Consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 W/m °C) with 1.5-mm-thick air space (k = 0.026 W/m °C) between the layers. Assuming the inner surface temperature of the jacket to be 28 °C and the surface area to be 1.1 m², determine the rate of heat loss through the jacket when the temperature of the outdoors is -5°C and the heat transfer coefficient at the outer surface is 25 W/m². °C. What would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric?

Consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 W/m °C) with 1.5-mm-thick air space (k = 0.026 W/m °C) between the layers. Assuming the inner surface temperature of the jacket to be 28 °C and the surface area to be 1.1 m², determine the rate of heat loss through the jacket when the temperature of the outdoors is -5°C and the heat transfer coefficient at the outer surface is 25 W/m². °C. What would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric?

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.1DP

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