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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